研究者詳細 - 奥村　曉

写真a

オクムラ　アキラ

奥村　曉

OKUMURA Akira

所属

宇宙地球環境研究所基盤研究部門宇宙線研究部講師

大学院担当

大学院理学研究科

ホームページ

http://oxon.hatenablog.com/

学位 2

博士（理学）（ 2009年9月東京大学）
修士（理学）（ 2005年3月東京大学）

学位の先頭へ▲

研究キーワード 2

ガンマ線天文学
宇宙線物理学

研究キーワードの先頭へ▲

研究分野 2

自然科学一般 / 素粒子、原子核、宇宙線、宇宙物理にする実験
自然科学一般 / 天文学

研究分野の先頭へ▲

経歴 9

名古屋大学宇宙地球環境研究所講師

2018年3月 - 現在

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国名：日本国
名古屋大学宇宙地球環境研究所助教授

2015年10月 - 2018年2月

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国名：日本国
マックスプランク核物理学研究所客員研究員

2015年4月 - 2016年3月

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国名：ドイツ連邦共和国
レスター大学日本学術振興会海外特別研究員

2013年4月 - 2015年3月

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国名：グレートブリテン・北アイルランド連合王国(英国)
名古屋大学太陽地球環境研究所助教授

2012年9月 - 2015年9月

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国名：日本国
名古屋大学太陽地球環境研究所日本学術振興会特別研究員 PD

2011年10月 - 2012年8月

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国名：日本国
宇宙航空研究開発機構宇宙科学研究所日本学術振興会特別研究員 PD

2010年4月 - 2011年9月

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国名：日本国
SLAC国立加速器研究所客員研究員

2010年4月 - 2011年9月

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国名：アメリカ合衆国
東京大学特任研究員

2009年10月 - 2010年3月

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国名：日本国

▼全件表示

経歴の先頭へ▲

学歴 3

東京大学理学系研究科

- 2009年9月

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国名：日本国
東京大学理学系研究科

2003年4月 - 2005年3月

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国名：日本国
東京大学理学部

1999年4月 - 2003年3月

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国名：日本国

学歴の先頭へ▲

所属学協会 2

日本物理学会
日本天文学会

所属学協会の先頭へ▲

論文 122

Constraints on axion-like particles with the Perseus Galaxy Cluster with MAGIC

Abe, H; Abe, S; Abhir, J; Acciari, VA; Agudo, I; Aniello, T; Ansoldi, S; Antonelli, LA; Engels, AA; Arcaro, C; Artero, M; Asano, K; Baack, D; Babic, A; Baquero, A; de Almeida, UB; Barrio, JA; Batkovic, I; Baxter, J; González, JB; Bednarek, W; Bernardini, E; Bernete, J; Berti, A; Besenrieder, J; Bigongiari, C; Biland, A; Blanch, O; Bonnoli, G; Bosnjak, Z; Burelli, I; Busetto, G; Campoy-Ordaz, A; Carosi, A; Carosi, R; Carretero-Castrillo, M; Castro-Tirado, AJ; Ceribella, G; Chai, Y; Cifuentes, A; Cikota, S; Colombo, E; Contreras, JL; Cortina, J; Covino, S; D'Amico, G; D'Elia, V; Da Vela, P; Dazzi, F; De Angelis, A; De Lotto, B; Del Popolo, A; Delgado, J; Mendez, CD; Depaoli, D; Di Pierro, F; Di Venere, L; Prester, DD; Donini, A; Dorner, D; Doro, M; Elsaesser, D; Emery, G; Escudero, J; Fariña, L; Fattorini, A; Foffano, L; Font, L; Fukami, S; Fukazawa, Y; López, RJG; Garczarczyk, M; Gasparyan, S; Gaug, M; Paiva, JGG; Giglietto, N; Giordano, F; Gliwny, P; Godinovic, N; Grau, R; Green, D; Green, JG; Hadasch, D; Hahn, A; Hassan, T; Heckmann, L; Herrera, J; Hrupec, D; Hütten, M; Imazawa, R; Inada, T; Iotov, R; Ishio, K; Martínez, IJ; Jormanainen, J; Kerszberg, D; Kluge, GW; Kobayashi, Y; Kouch, PM; Kubo, H; Kushida, J; Lezáun, ML; Lamastra, A; Leone, F; Lindfors, E; Linhoff, L; Lombardi, S; Longo, F; López-Coto, R; López-Moya, M; López-Oramas, A; Loporchio, S; Lorini, A; Fraga, BMD; Majumdar, P; Makariev, M; Maneva, G; Mang, N; Manganaro, M; Mangano, S; Mannheim, K; Mariotti, M; Martínez, M; Martínez-Chicharro, M; Mas-Aguilar, A; Mazin, D; Menchiari, S; Mender, S; Miceli, D; Miener, T; Miranda, JM; Mirzoyan, R; González, MM; Molina, E; Mondal, HA; Moralejo, A; Morcuende, D; Nakamori, T; Nanci, C; Nava, L; Neustroev, V; Nickel, L; Rosillo, MN; Nigro, C; Nikolic, L; Nilsson, K; Nishijima, K; Ekoume, TN; Noda, K; Nozaki, S; Ohtani, Y; Okumura, A; Otero-Santos, J; Paiano, S; Palatiello, M; Paneque, D; Paoletti, R; Paredes, JM; Pavlovic, D; Persic, M; Pihet, M; Pirola, G; Podobnik, F; Moroni, PGP; Prandini, E; Principe, G; Priyadarshi, C; Rhode, W; Ribó, M; Rico, J; Righi, C; Sahakyan, N; Saito, T; Satalecka, K; Saturni, FG; Schleicher, B; Schmidt, K; Schmuckermaier, F; Schubert, JL; Schweizer, T; Sciaccaluga, A; Sitarek, J; Sliusar, V; Sobczynska, D; Spolon, A; Stamerra, A; Striskovic, J; Strom, D; Strzys, M; Suda, Y; Suutarinen, S; Tajima, H; Takahashi, M; Takeishi, R; Tavecchio, F; Temnikov, P; Terauchi, K; Terzic, T; Teshima, M; Tosti, L; Truzzi, S; Tutone, A; Ubach, S; van Scherpenberg, J; Acosta, MV; Ventura, S; Verguilov, V; Viale, I; Vigorito, CF; Vitale, V; Vovk, I; Walter, R; Will, M; Yamamoto, T

PHYSICS OF THE DARK UNIVERSE 44 巻 2024年5月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Physics of the Dark Universe

Axion-like particles (ALPs) are pseudo-Nambu–Goldstone bosons that emerge in various theories beyond the standard model. These particles can interact with high-energy photons in external magnetic fields, influencing the observed gamma-ray spectrum. This study analyzes 41.3 h of observational data from the Perseus Galaxy Cluster collected with the MAGIC telescopes. We focused on the spectra the radio galaxy in the center of the cluster: NGC 1275. By modeling the magnetic field surrounding this target, we searched for spectral indications of ALP presence. Despite finding no statistical evidence of ALP signatures, we were able to exclude ALP models in the sub-micro electronvolt range. Our analysis improved upon previous work by calculating the full likelihood and statistical coverage for all considered models across the parameter space. Consequently, we achieved the most stringent limits to date for ALP masses around 50 neV, with cross sections down to gaγ=3×10−12 GeV−1.

DOI： 10.1016/j.dark.2024.101425

Web of Science

Scopus
The variability patterns of the TeV blazar PG 1553 + 113 from a decade of MAGIC and multiband observations

Abe H., Abe S., Abhir J., Acciari V.A., Agudo I., Aniello T., Ansoldi S., Antonelli L.A., Arbet Engels A., Arcaro C., Artero M., Asano K., Baack D., Babić A., Baquero A., Barres de Almeida U., Batković I., Baxter J., Becerra González J., Bernardini E., Bernete J., Berti A., Besenrieder J., Bigongiari C., Biland A., Blanch O., Bonnoli G., Bošnjak , Burelli I., Busetto G., Campoy-Ordaz A., Carosi A., Carosi R., Carretero-Castrillo M., Castro-Tirado A.J., Chai Y., Cifuentes A., Cikota S., Colombo E., Contreras J.L., Cortina J., Covino S., D’Amico G., D’Elia V., Da Vela P., Dazzi F., De Angelis A., De Lotto B., Del Popolo A., Delfino M., Delgado J., Delgado Mendez C., Depaoli D., Di Pierro F., Di Venere L., Dominis Prester D., Donini A., Dorner D., Doro M., Elsaesser D., Emery G., Escudero J., Fariña L., Fattorini A., Foffano L., Font L., Fukami S., Fukazawa Y., García López R.J., Gasparyan S., Gaug M., Giesbrecht Paiva J.G., Giglietto N., Giordano F., Gliwny P., Grau R., Green J.G., Hadasch D., Hahn A., Heckmann L., Herrera J., Hovatta T., Hrupec D., Hütten M., Imazawa R., Inada T., Iotov R., Ishio K., Jimenez Martínez I., Jormanainen J., Kerszberg D., Kluge G.W., Kobayashi Y., Kouch P.M., Kubo H., Kushida J., Láinez Lezáun M., Lamastra A., Leone F., Lindfors E.

Monthly Notices of the Royal Astronomical Society 529 巻 ( 4 ) 頁： 3894 - 3911 2024年4月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Monthly Notices of the Royal Astronomical Society

PG 1553 + 113 is one of the few blazars with a convincing quasi-periodic emission in the gamma-ray band. The source is also a very high energy (VHE; >100 GeV) gamma-ray emitter. To better understand its properties and identify the underlying physical processes driving its variability, the MAGIC Collaboration initiated a multiyear, multiwavelength monitoring campaign in 2015 involving the OVRO 40-m and Medicina radio telescopes, REM, KVA, and the MAGIC telescopes, Swift and Fermi satellites, and the WEBT network. The analysis presented in this paper uses data until 2017 and focuses on the characterization of the variability. The gamma-ray data show a (hint of a) periodic signal compatible with literature, but the X-ray and VHE gamma-ray data do not show statistical evidence for a periodic signal. In other bands, the data are compatible with the gamma-ray period, but with a relatively high p-value. The complex connection between the low- and high-energy emission and the non-monochromatic modulation and changes in flux suggests that a simple one-zone model is unable to explain all the variability. Instead, a model including a periodic component along with multiple emission zones is required.

DOI： 10.1093/mnras/stae649

Scopus
Silicon photomultipliers for the SST camera of the Cherenkov Telescope Array

Depaoli, D; Lapington, J; Leach, S; Okumura, A; Sofia, I; Tajima, H

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 1060 巻 2024年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

The Cherenkov Telescope Array Observatory (CTAO) will be the major global observatory for gamma-ray astronomy over the next decade and beyond. It will consist of two arrays of telescopes of different sizes, one for each hemisphere, and will be sensitive to gamma rays in the energy range from a few tens of GeV to hundreds of TeV. The Small-Sized Telescopes (SSTs) are a crucial component of the southern array, as they will extend the sensitivity of the observatory to the highest energies. Their focal plane will be equipped with 2048 Silicon Photomultiplier (SiPM) pixels, each one read independently by a state-of-the-art full waveform sampling readout. These solid-state sensors offer advantages over the traditional photomultiplier tubes, such as lower operating voltage, higher photon detection efficiency, and tolerance to bright illumination. In particular, they are the best choice for a small and compact camera such as the SST one. After a detailed comparative study, LVR3-type SiPMs from Hamamatsu Photonics were selected, with an active area of 6 mm × 6 mm, a microcell of 50 μm and without a protective coating, for optimum performance. The sensors demonstrated to have a higher photon detection efficiency and a lower crosstalk compared to the competitors, alongside a low dark count rate. In this contribution, we present the selection process and the latest measurements performed on the SiPMs mounted on the SST Camera module.

DOI： 10.1016/j.nima.2023.169047

Web of Science

Scopus
Multi-year characterisation of the broad-band emission from the intermittent extreme BL Lac 1ES 2344+514

Abe, H; Abe, S; Acciari, VA; Agudo, I; Aniello, T; Ansoldi, S; Antonelli, LA; Engels, AA; Arcaro, C; Artero, M; Asano, K; Baack, D; Babic, A; Baquero, A; de Almeida, UB; Batkovic, I; Baxter, J; González, JB; Bernardini, E; Bernete, J; Berti, A; Besenrieder, J; Bigongiari, C; Biland, A; Blanch, O; Bonnoli, G; Bosnjak, Z; Burelli, I; Busetto, G; Campoy-Ordaz, A; Carosi, A; Carosi, R; Carretero-Castrillo, M; Castro-Tirado, AJ; Chai, Y; Cifuentes, A; Cikota, S; Colombo, E; Contreras, JL; Cortina, J; Covino, S; D'Amico, G; D'Ammando, F; D'Elia, V; Da Vela, P; Dazzi, F; De Angelis, A; De Lotto, B; Del Popolo, A; Delfino, M; Delgado, J; Mendez, CD; Depaoli, D; Di Pierro, F; Di Venere, L; Prester, DD; Dorner, D; Doro, M; Elsaesser, D; Emery, G; Escudero, J; Fariña, L; Fattorini, A; Foffano, L; Font, L; Fukami, S; Fukazawa, Y; López, RJG; Gasparyan, S; Gaug, M; Paiva, JGG; Giglietto, N; Giordano, F; Gliwny, P; Grau, R; Green, JG; Hadasch, D; Hahn, A; Heckmann, L; Herrera, J; Hrupec, D; Hütten, M; Imazawa, R; Inada, T; Iotov, R; Ishio, K; Martínez, IJ; Jormanainen, J; Kerszberg, D; Kluge, GW; Kobayashi, Y; Kouch, PM; Kubo, H; Kushida, J; Lezáun, ML; Lamastra, A; Leone, F; Lindfors, E; Linho, L; Lombardi, S; Longo, F; López-Moya, M; López-Oramas, A; Loporchio, S; Lorini, A; Fraga, BMD; Majumdar, P; Makariev, M; Maneva, G; Mang, N; Manganaro, M; Mariotti, M; Martínez, M; Martínez-Chicharro, M; Mas-Aguilar, A; Mazin, D; Menchiari, S; Mender, S; Miceli, D; Miener, T; Miranda, JM; Mirzoyan, R; González, MM; Molina, E; Mondal, HA; Moralejo, A; Morcuende, D; Nakamori, T; Nanci, C; Neustroev, V; Nigro, C; Nikolic, L; Nishijima, K; Ekoume, TN; Noda, K; Nozaki, S; Ohtani, Y; Okumura, A; Otero-Santos, J; Paiano, S; Palatiello, M; Paneque, D; Paoletti, R; Paredes, JM; Pavlovic, D; Persic, M; Pihet, M; Pirola, G; Podobnik, F; Moroni, PGP; Prandini, E; Principe, G; Priyadarshi, C; Rhode, W; Ribó, M; Rico, J; Righi, C; Sahakyan, N; Saito, T; Satalecka, K; Saturni, FG; Schleicher, B; Schmidt, K; Schmuckermaier, F; Schubert, JL; Schweizer, T; Sciaccaluga, A; Sitarek, J; Spolon, A; Stamerra, A; Striskovic, J; Strom, D; Suda, Y; Tajima, H; Takeishi, R; Tavecchio, F; Temnikov, P; Terauchi, K; Terzic, T; Teshima, M; Tosti, L; Truzzi, S; Tutone, A; Ubach, S; van Scherpenberg, J; Ventura, S; Verguilov, V; Viale, I; Vigorito, CF; Vitale, V; Walter, R; Wunderlich, C; Yamamoto, T; Perri, M; Verrecchia, F; Leto, C; Das, S; Chatterjee, R; Raiteri, CM; Villata, M; Semkov, E; Ibryamov, S; Bachev, R; Strigachev, A; Damljanovic, G; Vince, O; Jovanovic, MD; Stojanovic, M; Larionov, VM; Grishina, TS; Kopatskaya, EN; Larionova, EG; Morozova, DA; Savchenko, SS; Troitskiy, IS; Troitskaya, YV; Vasilyev, AA; Chen, WP; Hou, WJ; Lin, CS; Tsai, A; Jorstad, SG; Weaver, ZR; Acosta-Pulido, JA; Carnerero, MI; Carosati, D; Kurtanidze, SO; Kurtanidze, OM; Jordan, B; Ivanidze, RZ; Gazeas, K; Vrontaki, K; Hovatta, T; Liodakis, I; Readhead, ACS; Kiehlmann, S; Zheng, W; Filippenko, AV; Ramazani, VF

ASTRONOMY & ASTROPHYSICS 682 巻 2024年2月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Astronomy and Astrophysics

Aims. The BL Lac 1ES 2344+514 is known for temporary extreme properties characterised by a shift of the synchrotron spectral energy distribution (SED) peak energy νsynch;p above 1 keV. While those extreme states have only been observed during high flux levels thus far, additional multi-year observing campaigns are required to achieve a coherent picture. Here, we report the longest investigation of the source from radio to very high energy (VHE) performed so far, focussing on a systematic characterisation of the intermittent extreme states. Methods.We organised a monitoring campaign covering a 3-year period from 2019 to 2021.Morethan ten instruments participated in the observations in order to cover the emission from radio to VHE. In particular, sensitive X-ray measurements by XMM-Newton, NuSTAR, and AstroSat took place simultaneously with multi-hour MAGIC observations, providing an unprecedented constraint of the two SED components for this blazar. Results. While our results confirm that 1ES 2344+514 typically exhibits νsynch;p > 1 keV during elevated flux periods, we also find periods where the extreme state coincides with low flux activity. A strong spectral variability thus happens in the quiescent state, and is likely caused by an increase in the electron acceleration efficiency without a change in the electron injection luminosity. On the other hand, we also report a strong X-ray flare (among the brightest for 1ES 2344+514) without a significant shift of νsynch;p. During this particular flare, the X-ray spectrum is among the softest of the campaign. It unveils complexity in the spectral evolution, where the common harder-when-brighter trend observed in BL Lacs is violated. By combining Swift-XRT and Swift-UVOT measurements during a low and hard X-ray state, we find an excess of the UV flux with respect to an extrapolation of the X-ray spectrum to lower energies. This UV excess implies that at least two regions significantly contribute to the infrared/optical/ultraviolet/X-ray emission. Using the simultaneous MAGIC, XMM-Newton, NuSTAR, and AstroSat observations, we argue that a region possibly associated with the 10 GHz radio core may explain such an excess. Finally, we investigate a VHE flare, showing an absence of simultaneous variability in the 0.3-2 keV band. Using time-dependent leptonic modelling, we show that this behaviour, in contradiction to single-zone scenarios, can instead be explained by a two-component model.

DOI： 10.1051/0004-6361/202347845

Web of Science

Scopus
MAGIC detection of GRB 201216C at z=1.1

Abe, H; Abe, S; Acciari, VA; Aguda, ; Aniello, T; Ansoldi, S; Antonelli, LA; Engels, AA; Arcaro, C; Artero, M; Asano, K; Baack, D; Babic, A; Baquero, A; de Almeida, UB; Barrio, JA; Batkovic, I; Baxter, J; González, JB; Bednarek, W; Bernardini, E; Bernete, J; Berti, A; Besenrieder, J; Bigongiari, C; Biland, A; Blanch, O; Bonnoli, G; Bosnjak, Z; Burelli, I; Busetto, G; Campoy-Ordaz, A; Carosi, A; Carosi, R; Carretero-Castrillo, M; Castro-Tirado, AJ; Ceribella, G; Chai, Y; Cifuentes, A; Cikota, S; Colombo, E; Contreras, JL; Cortina, J; Covino, S; D'Amico, G; D'Elia, V; Da Vela, P; Dazzi, F; De Angelis, A; De Lotto, B; Del Popolo, A; Delfino, M; Delgado, J; Mendez, CD; Depaoli, D; Di Pierro, F; Di Venere, L; Prester, DD; Donini, A; Dorner, D; Doro, M; Elsaesser, D; Emery, G; Escudero, J; Fariña, L; Fattorini, A; Foffano, L; Font, L; Fukami, S; Fukazawa, Y; López, RJG; Garczarczyk, M; Gasparyan, S; Gaug, M; Paiva, JGG; Giglietto, N; Giordano, F; Gliwny, P; Godinovic, N; Grau, R; Green, D; Green, JG; Hadasch, D; Hahn, A; Hassan, T; Heckmann, L; Herrera, J; Hrupec, D; Hütten, M; Imazawa, R; Inada, T; Iotov, R; Ishio, K; Martínez, IJ; Jormanainen, J; Kerszberg, D; Kluge, GW; Kobayashi, Y; Kouch, PM; Kubo, H; Kushida, J; Lezáun, ML; Lamastra, A; Leone, F; Lindfors, E; Linhoff, L; Lombardi, S; Longo, F; López-Coto, R; López-Moya, M; López-Oramas, A; Loporchio, S; Lorini, A; Lyard, E; Fraga, BMD; Majumdar, P; Makariev, M; Maneva, G; Mang, N; Manganaro, M; Mangano, S; Mannheim, K; Mariotti, M; Martínez, M; Mas-Aguilar, A; Mazin, D; Menchiari, S; Mender, S; Micanovic, S; Miceli, D; Miener, T; Miranda, JM; Mirzoyan, R; González, MM; Molina, E; Mondal, HA; Moralejo, A; Morcuende, D; Nanci, C; Nava, L; Neustroev, V; Rosillo, MN; Nigro, C; Nikolic, L; Nilsson, K; Nishijima, K; Ekoume, TN; Noda, K; Nozaki, S; Ohtani, Y; Okumura, A; Otero-Santos, J; Paiano, S; Palatiello, M; Paneque, D; Paoletti, R; Paredes, JM; Pavletic, L; Pavlovic, D; Persic, M; Pihet, M; Pirola, G; Podobnik, F; Moroni, PGP; Prandini, E; Principe, G; Priyadarshi, C; Rhode, W; Ribó, M; Rico, J; Righi, C; Sahakyan, N; Saito, T; Satalecka, K; Saturni, FG; Schleicher, B; Schmidt, K; Schmuckermaier, F; Schubert, JL; Schweizer, T; Sciaccaluga, A; Sitarek, J; Sliusar, V; Sobczynska, D; Spolon, A; Stamerra, A; Striskovic, J; Strom, D; Strzys, M; Suda, Y; Suutarinen, S; Tajima, H; Takahashi, M; Takeishi, R; Tavecchio, F; Temnikov, P; Terauchi, K; Terzic, T; Teshima, M; Tosti, L; Truzzi, S; Tutone, A; Ubach, S; van Scherpenberg, J; Acosta, MV; Ventura, S; Verguilov, V; Viale, I; Vigorito, CF; Vitale, V; Vovk, I; Walter, R; Will, M; Yamamoto, T; Gomboc, A; Jordana-Mitjans, N; Melandri, A; Mundell, CG; Shrestha, M; Steele, IA

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 527 巻 ( 3 ) 頁： 5856 - 5867 2024年1月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Monthly Notices of the Royal Astronomical Society

Gamma-ray bursts (GRBs) are explosive transient events occurring at cosmological distances, releasing a large amount of energy as electromagnetic radiation over several energy bands. We report the detection of the long GRB 201216C by the MAGIC telescopes. The source is located at z = 1.1 and thus it is the farthest one detected at very high energies. The emission above 70 GeV of GRB 201216C is modelled together with multiwavelength data within a synchrotron and synchrotron self-Compton (SSC) scenario. We find that SSC can explain the broad-band data well from the optical to the very-high-energy band. For the late-time radio data, a different component is needed to account for the observed emission. Differently from previous GRBs detected in the very-high-energy range, the model for GRB 201216C strongly favours a wind-like medium. The model parameters have values similar to those found in past studies of the afterglows of GRBs detected up to GeV energies.

DOI： 10.1093/mnras/stad2958

Web of Science

Scopus
Performance of the joint LST-1 and MAGIC observations evaluated with Crab Nebula data

Abe, H; Abe, K; Abe, S; Acciari, VA; Aguasca-Cabot, A; Agudo, I; Crespo, NA; Aniello, T; Ansoldi, S; Antonelli, LA; Aramo, C; Arbet-Engels, A; Arcaro, C; Artero, M; Asano, K; Aubert, P; Baack, D; Babic, A; Baktash, A; Bamba, A; Larriva, AB; Baroncelli, L; de Almeida, UB; Barrio, JA; Batkovic, I; Baxter, J; González, JB; Bednarek, W; Bernardini, E; Bernardos, MI; Medrano, JB; Berti, A; Besenrieder, J; Bhattacharjee, P; Biederbeck, N; Bigongiari, C; Biland, A; Bissaldi, E; Blanch, O; Bonnoli, G; Bordas, P; Bosnjak, Z; Bulgarelli, A; Burelli, I; Burmistrov, L; Buscemi, M; Busetto, G; Ordaz, AC; Cardillo, M; Caroff, S; Carosi, A; Carosi, R; Carrasco, MS; Carretero-Castrillo, M; Cassol, F; Castro-Tirado, AJ; Cauz, D; Cerasole, D; Ceribella, G; Chai, Y; Cheng, K; Chiavassa, A; Chikawa, M; Chytka, L; Cifuentes, A; Cikota, S; Colombo, E; Contreras, JL; Cornelia, A; Cortina, J; Costantini, H; Covino, S; D'Amico, G; D'Elia, V; Da Vela, P; Dalchenko, M; Dazzi, F; De Angelis, A; de Lavergne, MD; De Lotto, B; De Lucia, M; de Menezes, R; Del Peral, L; Del Popolo, A; Deleglise, G; Delfino, M; Mendez, CD; Mengual, JD; della Volpe, D; Dellaiera, M; Depaoli, D; De Angelis, A; Di Piano, A; Di Pierro, F; Di Pilato, A; Di Tria, R; Di Venere, L; Dominik, RM; Prester, DD; Donini, A; Dorner, D; Doro, M; Díaz, C; Eisenberger, L; Elsässer, D; Emery, G; Escudero, J; Ramazani, VF; Fariña, L; Fattorini, A; Ferrara, G; Ferrarotto, F; Fiasson, A; Foffano, L; Font, L; Coromina, LF; Fröse, S; Fukami, S; Fukazawa, Y; López, RJG; Garcia, E; Garczarczyk, M; Gasbarra, C; Gasparrini, D; Gasparyan, S; Gaug, M; Geyer, D; Paiva, JGG; Giglietto, N; Giordano, F; Gliwny, P; Godinovic, N; Grau, R; Green, D; Green, JG; Gunji, S; Günther, P; Hackfeld, J; Hadasch, D; Hahn, A; Hashiyama, K; Hassan, T; Hayashi, K; Heckmann, L; Heller, M; Llorente, JH; Hirotani, K; Hoffmann, D; Horns, D; Houles, J; Hrabovsky, M; Hrupec, D; Hui, D; Hütten, M; Iarlori, M; Imazawa, R; Inada, T; Inome, Y; Ioka, K; Iori, M; Iotov, R; Ishio, K; Jacquemont, M; Martínez, IJ; Jobst, E; Jormanainen, J; Jurysek, J; Kagaya, M; Karas, V; Katagiri, H; Kataoka, J; Kerszberg, D; Kluge, GW; Kobayashi, Y; Kohri, K; Kong, A; Kouch, PM; Kubo, H; Kushida, J; Lainez, M; Lamanna, G; Lamastra, A; Le Flour, T; Leone, F; Lindfors, E; Linhoff, L; Linhoff, M; Lombardi, S; Longo, F; Loporchio, S; Lorini, A; Bahilo, JL; Luque-Escamilla, PL; Lyard, E; Lezáun, ML; López-Coto, R; López-Moya, M; López-Oramas, A; Fraga, BMD; Majumdar, P; Makariev, M; Mandat, D; Maneva, G; Manganaro, M; Mangano, S; Mang, N; Manicò, G; Mannheim, K; Mariotti, M; Marquez, P; Marsella, G; Martinez, O; Martínez, G; Martínez, M; Martí, J; Mas-Aguilar, A; Maurin, G; Mazin, D; Menchiari, S; Mender, S; Guillen, EM; Micanovic, S; Miceli, D; Miener, T; Miranda, JM; Mirzoyan, R; Mizuno, T; Micanovic, S; González, MM; Molina, E; Mondal, HA; Montaruli, T; Monteiro, I; Moralejo, A; Morcuende, D; Morselli, A; Moya, V; Muraishi, H; Murase, K; Nagataki, S; Nakamori, T; Nanci, C; Neronov, A; Neustroev, V; Nickel, L; Rosillo, MN; Nigro, C; Nikolic, L; Nilsson, K; Nishijima, K; Ekoume, TN; Noda, K; Nosek, D; Nozaki, S; Ohishi, M; Ohtani, Y; Oka, T; Okumura, A; Orito, R; Otero-Santos, J; Paiano, S; Palatiello, M; Paneque, D; Pantaleo, FR; Paoletti, R; Paredes, JM; Pavletic, L; Pech, M; Pecimotika, M; Peresano, M; Persic, M; Pfeiffle, F; Pietropaolo, E; Pihet, M; Pirola, G; Plard, C; Podobnik, F; Poireau, V; Polo, M; Pons, E; Moroni, PGP; Prandini, E; Prast, J; Principe, G; Priyadarshi, C; Prouza, M; Rando, R; Rhode, W; Ribó, M; Rico, J; Righi, C; Rizi, V; Fernandez, GR; Frías, MDR; Sahakyan, N; Saito, T; Sakurai, S; Sanchez, DA; Satalecka, K; Sato, M; Sato, Y; Saturni, FG; Savchenko, V; Schleicher, B; Schmidt, K; Schmuckermaier, F; Schubert, JL; Schussler, F; Schweizer, T; Sciaccaluga, A; Siegert, T; Silvia, R; Sitarek, J; Sliusar, V; Sobczynska, D; Spolon, A; Stamerra, A; Striskovic, J; Strom, D; Strzys, M; Suda, Y; Suutarinen, S; Saric, T; Tajima, H; Takahashi, H; Takahashi, M; Takata, J; Takeishi, R; Tam, PHT; Tanaka, SJ; Tateishi, D; Tavecchio, F; Temnikov, P; Terada, Y; Terauchi, K; Terzic, T; Teshima, M; Tluczykont, M; Tokanai, F; Torres, DF; Tosti, L; Travnicek, P; Truzzi, S; Tutone, A; Ubach, S; Vacula, M; Vallania, P; van Scherpenberg, J; Acosta, MV; Ventura, S; Verguilov, V; Viale, I; Vigliano, A; Vigorito, CF; Visentin, E; Vitale, V; Voutsinas, G; Vovk, I; Vuillaume, T; Acosta, M; Walter, R; Wei, Z; Will, M; Yamamoto, T; Yamazaki, R; Yoshida, T; Yoshikoshi, T; Zywucka, N

ASTRONOMY & ASTROPHYSICS 680 巻 2023年12月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Astronomy and Astrophysics

Aims. Large-Sized Telescope 1 (LST-1), the prototype for the Large-Sized Telescope at the upcoming Cherenkov Telescope Array Observatory, is concluding its commissioning phase at the Observatorio del Roque de los Muchachos on the island of La Palma. The proximity of LST-1 to the two MAGIC (Major Atmospheric Gamma Imaging Cherenkov) telescopes makes it possible to carry out observations of the same gamma-ray events with both systems. Methods. We describe the joint LST-1+MAGIC analysis pipeline and used simultaneous Crab Nebula observations and Monte Carlo simulations to assess the performance of the three-telescope system. The addition of the LST-1 telescope allows for the recovery of events in which one of the MAGIC images is too dim to survive analysis quality cuts. Results. Thanks to the resulting increase in the collection area and stronger background rejection, we found a significant improvement in sensitivity, allowing for the detection of 30% weaker fluxes in the energy range between 200 GeV and 3 TeV. The spectrum of the Crab Nebula, reconstructed in the energy range between ∼60 GeV and ∼10 TeV, is in agreement with previous measurements.

DOI： 10.1051/0004-6361/202346927

Web of Science

Scopus
Star tracking for pointing determination of Imaging Atmospheric Cherenkov Telescopes

Abe, K; Abe, S; Aguasca-Cabot, A; Agudo, I; Crespo, NA; Antonelli, LA; Aramo, C; Arbet-Engels, A; Cornelia, A; Artero, M; Asano, K; Aubert, P; Baktash, A; Bamba, A; Larriva, AB; Baroncelli, L; de Almeida, UB; Barrio, JA; Batkovic, I; Baxter, J; Gonzalez, JB; Bernardini, E; Bernardos, M; Medrano, JB; Berti, A; Bhattacharjee, P; Biederbeck, N; Bigongiari, C; Bissaldi, E; Blanch, O; Bonnoli, G; Bordas, P; Bulgarelli, A; Burelli, ; Burmistrov, L; Buscemi, M; Cardillo, M; Caroff, S; Carosi, A; Cassol, F; Cauz, D; Ceribella, G; Chai, Y; Cheng, K; Chiavassa, A; Chikawa, M; Chytka, L; Cifuentes, A; Contreras, JL; Cortina, J; Costantini, H; Dalchenko, M; De Angelis, A; de Lavergne, MD; De Lotto, B; de Menezes, R; Deleglise, G; Delgado, C; Mengual, JD; della Volpe, D; Dellaiera, M; Di Piano, A; Di Pierro, F; Di Tria, R; Di Venere, L; Diaz, C; Dominik, RM; Prester, DD; Donini, A; Dorner, D; Doro, M; Elsässer, D; Emery, G; Escudero, J; Ramazani, VF; Ferrara, G; Ferrarotto, F; Fiasson, A; Coromina, LF; Fröse, S; Fukami, S; Fukazawa, Y; Garcia, E; Lopez, RG; Gasbarra, C; Gasparrini, D; Geyer, D; Paiva, JG; Giglietto, N; Giordano, F; Giro, E; Gliwny, P; Godinovic, N; Grau, R; Green, D; Green, J; Gunji, S; Guenther, P; Hackfeld, J; Hadasch, D; Hahn, A; Hashiyama, K; Hassan, T; Hayashi, K; Heckmann, L; Heller, M; Llorente, JH; Hirotani, K; Hoffmann, D; Horns, D; Houles, J; Hrabovsky, M; Hrupec, D; Hui, D; Hütten, M; Iarlori, M; Imazawa, R; Inada, T; Inome, Y; Ioka, K; Iori, M; Ishio, K; Jacquemont, M; Martinez, IJ; Jurysek, J; Kagaya, M; Karas, V; Katagiri, H; Kataoka, J; Kerszberg, D; Kobayashi, Y; Kohri, K; Kong, A; Kubo, H; Kushida, J; Lainez, M; Lamanna, G; Lamastra, A; Le Flour, T; Linhoff, M; Longo, F; Lopez-Coto, R; Lopez-Oramas, A; Loporchio, S; Lorini, A; Luque-Escamilla, PL; Majumdar, P; Makariev, M; Mandat, D; Manganaro, M; Manico, G; Mannheim, K; Mariotti, M; Marquez, P; Marsella, G; Marti, J; Martinez, O; Martinez, G; Martinez, M; Mas-Aguilar, A; Maurin, G; Mazin, D; Guillen, EM; Micanovic, S; Miceli, D; Miener, T; Miranda, JM; Mirzoyan, R; Mizuno, T; Gonzalez, MM; Molina, E; Montaruli, T; Monteiro, I; Moralejo, A; Morcuende, D; Morselli, A; Muraishi, H; Murase, K; Nagataki, S; Nakamori, T; Nickel, L; Nievas, M; Nishijima, K; Noda, K; Nosek, D; Nozaki, S; Ohishi, M; Ohtani, Y; Oka, T; Okumura, A; Orito, R; Otero-Santos, J; Palatiello, M; Paneque, D; Pantaleo, FR; Paoletti, R; Paredes, JM; Pech, M; Pecimotika, M; Peresano, M; Pfeiffle, F; Pietropaolo, E; Pirola, G; Plard, C; Podobnik, F; Poireau, ; Polo, M; Pons, E; Prandini, E; Prast, J; Principe, G; Priyadarshi, C; Prouza, M; Rando, R; Rhode, W; Ribo, M; Rizi, V; Fernandez, GR; Saito, T; Sakurai, S; Sanchez, DA; Saric, T; Sato, Y; Saturni, FG; Schleicher, B; Schmuckermaier, F; Schubert, JL; Schussler, F; Schweizer, T; Sato, M; Siegert, T; Silvia, R; Sitarek, J; Sliusar, V; Spolon, A; Striskovic, J; Strzys, M; Suda, Y; Tajima, H; Takahashi, H; Takahashi, M; Takata, J; Takeishi, R; Tam, PHT; Tanaka, SJ; Tateishi, D; Temnikov, P; Terada, Y; Terauchi, K; Terzic, T; Teshima, M; Tluczykont, M; Tokanai, F; Torres, DF; Travnicek, P; Truzzi, S; Tutone, A; Vacula, M; Vallania, P; van Scherpenberg, J; Acosta, MV; Viale, ; Vigliano, A; Vigorito, CF; Vitale, V; Voutsinas, G; Vovk, I; Vuillaume, T; Walter, R; Wei, Z; Will, M; Yamamoto, T; Yamazaki, R; Yoshida, T; Yoshikoshi, T; Zywucka, N

ASTRONOMY & ASTROPHYSICS 679 巻 2023年11月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Astronomy and Astrophysics

We present a novel approach to the determination of the pointing of Imaging Atmospheric Cherenkov Telescopes (IACTs) using the trajectories of the stars in their camera s field of view. The method starts with the reconstruction of the star positions from the Cherenkov camera data, taking into account the point spread function of the telescope, to achieve a satisfying reconstruction accuracy of the pointing position. A simultaneous fit of all reconstructed star trajectories is then performed with the orthogonal distance regression (ODR) method. ODR allows us to correctly include the star position uncertainties and use the time as an independent variable. Having the time as an independent variable in the fit makes it better suitable for various star trajectories. This method can be applied to any IACT and requires neither specific hardware nor interface or special data-taking mode. In this paper, we use the Large-Sized Telescope (LST) data to validate it as a useful tool to improve the determination of the pointing direction during regular data taking. The simulation studies show that the accuracy and precision of the method are comparable with the design requirements on the pointing accuracy of the LST (=14''). With the typical LST event acquisition rate of 10 kHz, the method can achieve up to 50 Hz pointing monitoring rate, compared to O(1) Hz achievable with standard techniques. The application of the method to the LST prototype (LST-1) commissioning data shows the stable pointing performance of the telescope.

DOI： 10.1051/0004-6361/202347128

Web of Science

Scopus
Observations of the Crab Nebula and Pulsar with the Large-sized Telescope Prototype of the Cherenkov Telescope Array

Abe, H; Abe, K; Abe, S; Aguasca-Cabot, A; Agudo, ; Crespo, NA; Antonelli, LA; Aramo, C; Arbet-Engels, A; Arcaro, C; Artero, M; Asano, K; Aubert, P; Baktash, A; Bamba, A; Larriva, AB; Baroncelli, L; de Almeida, UB; Barrio, JA; Batkovic, I; Baxter, J; González, JB; Bernardini, E; Bernardos, MI; Medrano, JB; Berti, A; Bhattacharjee, P; Biederbeck, N; Bigongiari, C; Bissaldi, E; Blanch, O; Bonnoli, G; Bordas, P; Borghese, A; Bulgarelli, A; Burelli, I; Buscemi, M; Cardillo, M; Caroff, S; Carosi, A; Cassol, F; Cauz, D; Ceribella, G; Chai, Y; Cheng, K; Chiavassa, A; Chikawa, M; Chytka, L; Cifuentes, A; Contreras, JL; Cortina, J; Costantini, H; D'Amico, G; Dalchenko, M; De Angelis, A; de Lavergne, MD; de Lotto, B; de Menezes, R; Deleglise, G; Delgado, C; Mengual, JD; della Volpe, D; Dellaiera, M; Depaoli, D; Di Piano, A; Di Pierro, F; Di Tria, R; Di Venere, L; Díaz, C; Dominik, RM; Prester, DD; Donini, A; Dorner, D; Doro, M; Elsässer, D; Emery, G; Escudero, J; Ramazani, VF; Ferrara, G; Ferrarotto, F; Fiasson, A; Coromina, LF; Fröse, S; Fukami, S; Fukazawa, Y; Garcia, E; López, RG; Gasbarra, C; Gasparrini, D; Geyer, F; Paiva, JG; Giglietto, N; Giordano, F; Giro, E; Gliwny, P; Godinovic, N; Grau, R; Green, D; Green, J; Gunji, S; Hackfeld, J; Hadasch, D; Hahn, A; Hashiyama, K; Hassan, T; Hayashi, K; Heckmann, L; Heller, M; Llorente, JH; Hirotani, K; Hoffmann, D; Horns, D; Houles, J; Hrabovsky, M; Hrupec, D; Hui, D; Hütten, M; Iarlori, M; Imazawa, R; Inada, T; Inome, Y; Ioka, K; Iori, M; Ishio, K; Iwamura, Y; Jacquemont, M; Martinez, IJ; Jurysek, J; Kagaya, M; Karas, V; Katagiri, H; Kataoka, J; Kerszberg, D; Kobayashi, Y; Kong, A; Kubo, H; Kushida, J; Lainez, M; Lamanna, G; Lamastra, A; Le Flour, T; Linhoff, M; Longo, F; López-Coto, R; López-Moya, M; López-Oramas, A; Loporchio, S; Lorini, A; Luque-Escamilla, PL; Majumdar, P; Makariev, M; Mandat, D; Manganaro, M; Manicò, G; Mannheim, K; Mariotti, M; Marquez, P; Marsella, G; Martí, J; Martinez, O; Martínez, G; Martínez, M; Marusevec, P; Mas-Aguilar, A; Maurin, G; Mazin, D; Guillen, EM; Micanovic, S; Miceli, D; Miener, T; Miranda, JM; Mirzoyan, R; Mizuno, T; Gonzalez, MM; Molina, E; Montaruli, T; Monteiro, I; Moralejo, A; Morcuende, D; Morselli, A; Mrakovcic, K; Murase, K; Nagai, A; Nagataki, S; Nakamori, T; Nickel, L; Nievas, M; Nishijima, K; Noda, K; Nosek, D; Nozaki, S; Ohishi, M; Ohtani, Y; Oka, T; Okazaki, N; Okumura, A; Orito, R; Otero-Santos, J; Palatiello, M; Paneque, D; Pantaleo, FR; Paoletti, R; Paredes, JM; Pech, M; Pecimotika, M; Peresano, M; Pérez, A; Pietropaolo, E; Pirola, G; Plard, C; Podobnik, F; Poireau, V; Polo, M; Pons, E; Prandini, E; Prast, J; Principe, G; Priyadarshi, C; Prouza, M; Rando, R; Rhode, W; Ribó, M; Rizi, V; Fernandez, GR; Ruíz, JE; Saito, T; Sakurai, S; Sanchez, DA; Saric, T; Sato, Y; Saturni, FG; Schleicher, B; Schmuckermaier, F; Schubert, JL; Schussler, F; Schweizer, T; Arroyo, MS; Silvia, R; Sitarek, J; Sliusar, V; Spolon, A; Striskovic, J; Strzys, M; Suda, Y; Sunada, Y; Tajima, H; Takahashi, H; Takahashi, M; Takata, J; Takeishi, R; Tam, PHT; Tanaka, SJ; Tateishi, D; Tejedor, LA; Temnikov, P; Terada, Y; Terauchi, K; Terzic, T; Teshima, M; Tluczykont, M; Tokanai, F; Torres, DF; Travnicek, P; Truzzi, S; Tutone, A; Uhlrich, G; Vacula, M; Vallania, P; van Scherpenberg, J; Acosta, MV; Verguilov, V; Viale, I; Vigliano, A; Vigorito, CF; Vitale, V; Voutsinas, G; Vovk, I; Vuillaume, T; Walter, R; Will, M; Yamamoto, T; Yamazaki, R; Yoshida, T; Yoshikoshi, T; Zywucka, N; Bernlöhr, K; Gueta, O; Kosack, K; Maier, G; Watson, J

ASTROPHYSICAL JOURNAL 956 巻 ( 2 ) 2023年10月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Astrophysical Journal

The Cherenkov Telescope Array (CTA) is a next-generation ground-based observatory for gamma-ray astronomy at very high energies. The Large-Sized Telescope prototype (LST-1) is located at the CTA-North site, on the Canary Island of La Palma. LSTs are designed to provide optimal performance in the lowest part of the energy range covered by CTA, down to ≃20 GeV. LST-1 started performing astronomical observations in 2019 November, during its commissioning phase, and it has been taking data ever since. We present the first LST-1 observations of the Crab Nebula, the standard candle of very-high-energy gamma-ray astronomy, and use them, together with simulations, to assess the performance of the telescope. LST-1 has reached the expected performance during its commissioning period—only a minor adjustment of the preexisting simulations was needed to match the telescope’s behavior. The energy threshold at trigger level is around 20 GeV, rising to ≃30 GeV after data analysis. Performance parameters depend strongly on energy, and on the strength of the gamma-ray selection cuts in the analysis: angular resolution ranges from 0.°12-0.°40, and energy resolution from 15%-50%. Flux sensitivity is around 1.1% of the Crab Nebula flux above 250 GeV for a 50 hr observation (12% for 30 minutes). The spectral energy distribution (in the 0.03-30 TeV range) and the light curve obtained for the Crab Nebula agree with previous measurements, considering statistical and systematic uncertainties. A clear periodic signal is also detected from the pulsar at the center of the Nebula.

DOI： 10.3847/1538-4357/ace89d

Web of Science

Scopus
Sensitivity of the Cherenkov Telescope Array to spectral signatures of hadronic PeVatrons with application to Galactic Supernova Remnants

Acero, F; Acharyya, A; Adam, R; Aguasca-Cabot, A; Agudo, I; Aguirre-Santaella, A; Alfaro, J; Aloisio, R; Crespo, NA; Batista, RA; Amati, L; Amato, E; Ambrosi, G; Angüner, EO; Aramo, C; Arcaro, C; Armstrong, T; Asano, K; Ascasibar, Y; Aschersleben, J; Backes, M; Baktash, A; Balazs, C; Balbo, M; Ballet, J; Larriva, AB; Martins, VB; de Almeida, UB; Barrio, JA; Bastieri, D; Baxter, JR; Tjus, JB; Benbow, W; Bernardos-Martín, MI; Bernete, J; Berti, A; Bertucci, B; Beshley, V; Bhattacharjee, P; Bhattacharyya, S; Biland, A; Bissaldi, E; Biteau, J; Blanch, O; Bordas, P; Bottacini, E; Bregeon, J; Brose, R; Bucciantini, N; Bulgarelli, A; Capasso, M; Dolcetta, RAC; Caraveo, P; Cardillo, M; Carosi, R; Casanova, S; Cascone, E; Cassol, F; Catalani, F; Cerruti, M; Chadwick, P; Chaty, S; Chen, A; Chernyakova, M; Chiavassa, A; Chudoba, J; Coimbra-Araujo, C; Conforti, V; Contreras, JL; Costa, A; Costantini, H; Cristofari, P; Crocker, R; D'Amico, G; D'Ammando, F; De Angelis, A; De Caprio, V; Dal Pino, EMD; Wilhelmi, ED; de Souza, V; Delgado, C; della Volp, D; Depaoli, D; Di Girolamo, T; Di Pierro, F; Di Tria, R; Di Venere, L; Diebold, S; Djuvsland, JI; Donini, A; Doro, M; Dos Anjos, RDC; Dwarkadas, VV; Einecke, S; Elsässer, D; Emery, G; Evoli, C; Falceta-Goncalves, D; Fedorova, E; Fegan, S; Ferrand, G; Fiandrini, E; Filipovic, M; Fioretti, V; Fiori, M; Foffano, L; Fontaine, G; Fukami, S; Galanti, G; Galaz, G; Gammaldi, V; Gasbarra, C; Ghalumyan, A; Ghirlanda, G; Giarrusso, M; Giavitto, G; Giglietto, N; Giordano, F; Giroletti, M; Giuliani, A; Giunti, L; Godinovic, N; Coelho, JG; Gréaux, L; Green, D; Grondin, MH; Gueta, O; Gunji, S; Hassan, T; Heller, M; Hernández-Cadena, S; Hinton, J; Hnatyk, B; Hnatyk, R; Hoffmann, D; Hofmann, W; Holder, J; Horan, D; Horvath, P; Hrabovsky, M; Hrupec, D; Inada, T; Incardona, F; Inoue, S; Ishio, K; Jamrozy, M; Janecek, P; Martínez, IJ; Jin, W; Jung-Richardt, I; Jurysek, J; Kaaret, P; Karas, V; Katz, U; Kerszberg, D; Khélifi, B; Kieda, DB; Kissmann, R; Kleiner, T; Kluge, G; Kluzniak, W; Knödlseder, J; Kobayashi, Y; Kohri, K; Komin, N; Kornecki, P; Kubo, H; La Palombara, N; Láinez, M; Lamastra, A; Lapington, J; Lemoine-Goumard, M; Lenain, JP; Leone, F; Leto, G; Leuschner, F; Lindfors, E; Liodakis, I; Lohse, T; Lombardi, S; Longo, F; López-Coto, R; López-Moya, M; López-Oramas, A; Loporchio, S; Luque-Escamilla, PL; Macias, O; Mackey, J; Majumdar, P; Mandat, D; Manganaro, M; Manicò, G; Marconi, M; Martí, J; Martínez, G; Martinez, M; Martinez, O; Mello, AJTS; Menchiari, S; Meyer, DMA; Micanovic, S; Miceli, D; Miceli, M; Michalowski, J; Miener, T; Miranda, JM; Mitchell, A; Mode, B; Moderski, R; Mohrmann, L; Molina, E; Montaruli, T; Morcuende, D; Morlino, G; Morselli, A; Mosè, M; Moulin, E; Mukherjee, R; Munari, K; Murach, T; Nagai, A; Nagataki, S; Nemmen, R; Niemiec, J; Nieto, D; Rosillo, MN; Nikolajuk, M; Nishijima, K; Noda, K; Novosyadlyj, B; Nozaki, S; Ohishi, M; Ohm, S; Ohtani, Y; Okumura, A; Olmi, B; Ong, RA; Orienti, M; Orito, R; Orlandini, M; Orlando, E; Orlando, S; Ostrowski, M; Oya, I; Pantaleo, FR; Paredes, JM; Patricelli, B; Pecimotika, M; Peresano, M; Pérez-Romero, J; Persic, M; Petruk, O; Piano, G; Pietropaolo, E; Pirola, G; Pittori, C; Pohl, M; Ponti, G; Prandini, E; Principe, G; Priyadarshi, C; Pueschel, E; Pühlhofer, G; Pumo, ML; Quirrenbach, A; Rando, R; Razzaque, S; Reichherzer, P; Reimer, A; Reimer, O; Renaud, M; Reposeur, T; Ribó, M; Richtler, T; Rico, J; Rieger, F; Rigoselli, M; Riitano, L; Rizi, V; Roache, E; Romano, P; Romeo, G; Rosado, J; Rowell, G; Rudak, B; Sadeh, I; Safi-Harb, S; Saha, L; Sailer, S; Sánchez-Conde, M; Sarkar, S; Satalecka, K; Saturni, FG; Scherer, A; Schovánek, P; Schussler, F; Schwanke, U; Scuderi, S; Seglar-Arroyo, M; Sergijenko, O; Servillat, M; Shang, RY; Sharma, P; Siejkowski, H; Sliusar, V; Slowikowska, A; Sol, H; Specovius, A; Spencer, ST; Spengler, G; Stamerra, A; Stanic, S; Starecki, T; Starling, R; Stolarczyk, T; Pereira, LAS; Suda, Y; Suomijarvi, T; Sushch, I; Tajima, H; Tam, PHT; Tanaka, SJ; Tavecchio, F; Testa, V; Tian, W; Tibaldo, L; Torres, DF; Tothill, N; Vallage, B; Vallania, P; van Eldik, C; van Scherpenberg, J; Vandenbroucke, J; Acosta, MV; Vecchi, M; Vercellone, S; Verna, G; Viana, A; Vignatti, J; Vitale, V; Vodeb, V; Vorobiov, S; Vuillaume, T; Wagner, SJ; Walter, R; White, M; Wierzcholska, A; Will, M; Williams, D; Yang, L; Yoshida, T; Yoshikoshi, T; Zaharijas, G; Zampieri, L; Zavrtanik, D; Zavrtanik, M; Zhdanov, VI; Zivec, M

ASTROPARTICLE PHYSICS 150 巻 2023年8月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Astroparticle Physics

The local Cosmic Ray (CR) energy spectrum exhibits a spectral softening at energies around 3 PeV. Sources which are capable of accelerating hadrons to such energies are called hadronic PeVatrons. However, hadronic PeVatrons have not yet been firmly identified within the Galaxy. Several source classes, including Galactic Supernova Remnants (SNRs), have been proposed as PeVatron candidates. The potential to search for hadronic PeVatrons with the Cherenkov Telescope Array (CTA) is assessed. The focus is on the usage of very high energy γ-ray spectral signatures for the identification of PeVatrons. Assuming that SNRs can accelerate CRs up to knee energies, the number of Galactic SNRs which can be identified as PeVatrons with CTA is estimated within a model for the evolution of SNRs. Additionally, the potential of a follow-up observation strategy under moonlight conditions for PeVatron searches is investigated. Statistical methods for the identification of PeVatrons are introduced, and realistic Monte-Carlo simulations of the response of the CTA observatory to the emission spectra from hadronic PeVatrons are performed. Based on simulations of a simplified model for the evolution for SNRs, the detection of a γ-ray signal from in average 9 Galactic PeVatron SNRs is expected to result from the scan of the Galactic plane with CTA after 10 h of exposure. CTA is also shown to have excellent potential to confirm these sources as PeVatrons in deep observations with O(100) hours of exposure per source.

DOI： 10.1016/j.astropartphys.2023.102850

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Sensitivity of the Cherenkov Telescope Array to TeV photon emission from the Large Magellanic Cloud

Acharyya, A; Adam, R; Aguasca-Cabot, A; Agudo, I; Aguirre-Santaella, A; Alfaro, J; Aloisio, R; Batista, RA; Amato, E; Angüner, EO; Aramo, C; Arcaro, C; Asano, K; Aschersleben, J; Ashkar, H; Backes, M; Baktash, A; Balazs, C; Balbo, M; Ballet, J; Bamba, A; Larriva, AB; Martins, VB; de Almeida, UB; Barrio, JA; Bastieri, D; Batista, P; Batkovic, I; Baxter, JR; Gonzalez, JB; Tjus, JB; Benbow, W; Bernardini, E; Martín, MIB; Medrano, JB; Berti, A; Bertucci, B; Beshley, V; Bhattacharjee, P; Bhattacharyya, S; Bigongiari, C; Biland, A; Bissaldi, E; Bocchino, F; Bordas, P; Borkowski, J; Bottacini, E; Böttcher, M; Bradascio, F; Brown, AM; Bulgarelli, A; Burmistrov, L; Caroff, S; Carosi, A; Carquín, E; Casanova, S; Cascone, E; Cassol, F; Cerruti, M; Chadwick, P; Chaty, S; Chen, A; Chiavassa, A; Chytka, L; Conforti, V; Cortina, J; Costa, A; Costantini, H; Cotter, G; Crestan, S; Cristofari, P; D'Ammando, F; Dalchenko, M; Dazzi, F; De Angelis, A; De Caprio, V; Dal Pino, EMD; De Martino, D; de Naurois, M; de Souza, V; del Valle, MV; Giler, AGD; Delgado, C; della Volpe, D; Depaoli, D; Di Girolamo, T; Di Piano, A; Di Pierro, F; Di Tria, R; Di Venere, L; Diebold, S; Doro, M; Dumora, D; Dwarkadas, VV; Eckner, C; Egberts, K; Emery, G; Escudero, J; Falceta-Goncalves, D; Fedorova, E; Fegan, S; Feng, Q; Ferenc, D; Ferrand, G; Fiandrini, E; Filipovic, M; Fioretti, V; Foffano, L; Fontaine, G; Fukui, Y; Gaggero, D; Galanti, G; Galaz, G; Gallozzi, S; Gammaldi, V; Garczarczyk, M; Gasbarra, C; Gasparrini, D; Ghalumyan, A; Giarrusso, M; Giavitto, G; Giglietto, N; Giordano, F; Giuliani, A; Glicenstein, JF; Goldoni, P; Coelho, JG; Granot, J; Green, D; Green, JG; Grondin, MH; Gueta, O; Hadasch, D; Hamal, P; Hassan, T; Hayashi, K; Heller, M; Cadena, SH; Hiroshima, N; Hnatyk, B; Hnatyk, R; Hofmann, W; Holder, J; Holler, M; Horan, D; Horvath, P; Hrabovsky, M; Hütten, M; Iarlori, M; Inada, T; Incardona, F; Inoue, S; Iocco, F; Jamrozy, M; Jin, W; Jung-Richardt, I; Jurysek, J; Kantzas, D; Karas, V; Katagiri, H; Kerszberg, D; Knödlseder, J; Komin, N; Kornecki, P; Kosack, K; Kowal, G; Kubo, H; Lamastra, A; Lapington, J; Lemoine-Goumard, M; Lenain, JP; Leone, F; Leto, G; Leuschner, F; Lindfors, E; Lohse, T; Lombardi, S; Longo, F; López-Coto, R; López-Oramas, A; Loporchio, S; Luque-Escamilla, PL; Macias, O; Majumdar, P; Mandat, D; Mangano, S; Manicò, G; Mariotti, M; Marquez, P; Marsella, G; Martí, J; Martin, P; Martínez, M; Mazin, D; Menchiari, S; Meyer, DMA; Miceli, D; Miceli, M; Michalowski, J; Mitchell, A; Moderski, R; Mohrmann, L; Molero, M; Molina, E; Montaruli, T; Moralejo, A; Morcuende, D; Morselli, A; Moulin, E; Moya, V; Mukherjee, R; Munari, K; Muraczewski, A; Nagataki, S; Nakamori, T; Nayak, A; Niemiec, J; Nievas, M; Nikolajuk, M; Nishijima, K; Noda, K; Nosek, D; Novosyadlyj, B; Nozaki, S; Ohishi, M; Ohm, S; Okumura, A; Olmi, B; Ong, RA; Orienti, M; Orito, R; Orlandini, M; Orlando, E; Orlando, S; Ostrowski, M; Oya, I; Pagliaro, A; Palatka, M; Pantaleo, FR; Paoletti, R; Paredes, JM; Parmiggiani, N; Patricelli, B; Pech, M; Pecimotika, M; Persic, M; Petruk, O; Pierre, E; Pietropaolo, E; Pirola, G; Pohl, M; Prandini, E; Priyadarshi, C; Pühlhofer, G; Pumo, ML; Punch, M; Queiroz, FS; Quirrenbach, A; Rainò, S; Rando, R; Razzaque, S; Reimer, A; Reimer, O; Reposeur, T; Ribó, M; Richtler, T; Rico, J; Rieger, F; Rigoselli, M; Rizi, V; Roache, E; Fernandez, GR; Romano, P; Romeo, G; Rosado, J; de Leon, AR; Rudak, B; Rulten, C; Sadeh, I; Saito, T; Sanchez-Conde, M; Sano, H; Santangelo, A; Santos-Lima, R; Sarkar, S; Saturni, FG; Scherer, A; Schovanek, P; Schussler, F; Schwanke, U; Sergijenko, O; Servillat, M; Siejkowski, H; Siqueira, C; Spencer, S; Stamerra, A; Stanic, S; Steppa, C; Stolarczyk, T; Suda, Y; Tavernier, T; Teshima, M; Tibaldo, L; Torres, DF; Tothill, N; Vacula, M; Vallage, B; Vallania, P; van Eldik, C; Acosta, MV; Vecchi, M; Ventura, S; Vercellone, S; Viana, A; Vigorito, CF; Vink, J; Vitale, V; Vodeb, V; Vorobiov, S; Vuillaume, T; Wagner, SJ; Walter, R; White, M; Wierzcholska, A; Will, M; Yamazaki, R; Yang, L; Yoshikoshi, T; Zacharias, M; Zaharijas, G; Zavrtanik, D; Zavrtanik, M; Zdziarski, AA; Zhdanov, VI; Zietara, K; Zivec, M

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 523 巻 ( 4 ) 頁： 5353 - 5387 2023年6月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Monthly Notices of the Royal Astronomical Society

A deep survey of the Large Magellanic Cloud at ∼0.1-100 TeV photon energies with the Cherenkov Telescope Array is planned. We assess the detection prospects based on a model for the emission of the galaxy, comprising the four known TeV emitters, mock populations of sources, and interstellar emission on galactic scales. We also assess the detectability of 30 Doradus and SN 1987A, and the constraints that can be derived on the nature of dark matter. The survey will allow for fine spectral studies of N 157B, N 132D, LMC P3, and 30 Doradus C, and half a dozen other sources should be revealed, mainly pulsar-powered objects. The remnant from SN 1987A could be detected if it produces cosmic-ray nuclei with a flat power-law spectrum at high energies, or with a steeper index 2.3-2.4 pending a flux increase by a factor of >3-4 over ∼2015-2035. Large-scale interstellar emission remains mostly out of reach of the survey if its >10 GeV spectrum has a soft photon index ∼2.7, but degree-scale 0.1-10 TeV pion-decay emission could be detected if the cosmic-ray spectrum hardens above >100 GeV. The 30 Doradus star-forming region is detectable if acceleration efficiency is on the order of 1−10 per cent of the mechanical luminosity and diffusion is suppressed by two orders of magnitude within <100 pc. Finally, the survey could probe the canonical velocity-averaged cross-section for self-annihilation of weakly interacting massive particles for cuspy Navarro-Frenk-White profiles.

DOI： 10.1093/mnras/stad1576

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Multimessenger Characterization of Markarian 501 during Historically Low X-Ray and γ-Ray Activity

Abé, H; Abé, S; Acciari, VA; Agudo, I; Aniello, T; Ansoldi, S; Antonelli, LA; Arbet-Engels, A; Arcaro, C; Artero, M; Asano, K; Baack, D; Babic, A; Baquero, A; de Almeida, UB; Barrio, JA; Batkovic, I; Baxter, J; González, JB; Bednarek, W; Bernardini, E; Bernardos, M; Berti, A; Besenrieder, J; Bhattacharyya, W; Bigongiari, C; Biland, A; Blanch, O; Bonnoli, G; Bosnjak, Z; Burelli, I; Busetto, G; Carosi, R; Carretero-Castrillo, M; Castro-Tirado, AJ; Ceribella, G; Chai, Y; Chilingarian, A; Cikota, S; Colombo, E; Contreras, JL; Cortina, J; Covino, S; D'Amico, G; D'Elia, V; Da Vela, P; Dazzi, F; De Angelis, A; De Lotto, B; Del Popolo, A; Delfino, M; Delgado, J; Mendez, CD; Depaoli, D; Di Pierro, F; Di Venere, L; Espiñeira, EDS; Prester, DD; Donini, A; Dorner, D; Doro, M; Elsaesser, D; Emery, G; Escudero, J; Ramazani, VF; Fariña, L; Fattorini, A; Foffano, L; Font, L; Fruck, C; Fukami, S; Fukazawa, Y; López, RJG; Garczarczyk, M; Gasparyan, S; Gaug, M; Paiva, JGG; Giglietto, N; Giordano, F; Gliwny, P; Godinovic, N; Grau, R; Green, D; Green, JG; Hadasch, D; Hahn, A; Hassan, T; Heckmann, L; Herrera, J; Hrupec, D; Hütten, M; Imazawa, R; Inada, T; Iotov, R; Ishio, K; Martínez, IJ; Jormanainen, J; Kerszberg, D; Kobayashi, Y; Kubo, H; Kushida, J; Lamastra, A; Lelas, D; Leone, F; Lindfors, E; Linhoff, L; Lombardi, S; Longo, F; López-Coto, R; López-Moya, M; López-Oramas, A; Loporchio, S; Lorini, A; Lyard, E; Fraga, BMD; Majumdar, P; Makariev, M; Maneva, G; Mang, N; Manganaro, M; Mangano, S; Mannheim, K; Mariotti, M; Martínez, M; Mas-Aguilar, A; Mazin, D; Menchiari, S; Mender, S; Micanovic, S; Miceli, D; Miener, T; Miranda, JM; Mirzoyan, R; Molina, E; Mondal, HA; Moralejo, A; Morcuende, D; Moreno, V; Nakamori, T; Nanci, C; Nava, L; Neustroev, V; Rosillo, MN; Nigro, C; Nilsson, K; Nishijima, K; Ekoume, TN; Noda, K; Nozaki, S; Ohtani, Y; Oka, T; Okumura, A; Otero-Santos, J; Paiano, S; Palatiello, M; Paneque, D; Paoletti, R; Paredes, JM; Pavletic, L; Persic, M; Pihet, M; Pirola, G; Podobnik, F; Moroni, PGP; Prandini, E; Principe, G; Priyadarshi, C; Rhode, W; Ribó, M; Rico, J; Righi, C; Rugliancich, A; Sahakyan, N; Saito, T; Sakurai, S; Satalecka, K; Saturni, FG; Schleicher, B; Schmidt, K; Schmuckermaier, F; Schubert, JL; Schweizer, T; Sitarek, J; Sliusar, V; Sobczynska, D; Spolon, A; Stamerra, A; Striskovic, J; Strom, D; Strzys, M; Suda, Y; Suric, T; Tajima, H; Takahashi, M; Takeishi, R; Tavecchio, F; Temnikov, P; Terauchi, K; Terzic, T; Teshima, M; Tosti, L; Truzzi, S; Tutone, A; Ubach, S; van Scherpenberg, J; Acosta, MV; Ventura, S; Verguilov, V; Viale, I; Vigorito, CF; Vitale, V; Vovk, I; Walter, R; Will, M; Wunderlich, C; Yamamoto, T; Zaric, D; Cerruti, M; Acosta-Pulido, JA; Apolonio, G; Bachev, R; Balokovic, M; Benítez, E; Björklund, I; Bozhilov, V; Brown, LF; Bugg, A; Carbonell, W; Carnerero, MI; Carosati, D; Casadio, C; Chamani, W; Chen, WP; Chigladze, RA; Damljanovic, G; Epps, K; Erkenov, A; Feige, M; Finke, J; Fuentes, A; Gazeas, K; Giroletti, M; Grishina, TS; Gupta, AC; Gurwell, MA; Heidemann, E; Hiriart, D; Hou, WJ; Hovatta, T; Ibryamov, S; Joner, MD; Jorstad, SG; Kania, J; Kiehlmann, S; Kimeridze, GN; Kopatskaya, EN; Kopp, M; Korte, M; Kotas, B; Koyama, S; Kramer, JA; Kunkel, L; Kurtanidze, SO; Kurtanidze, OM; Lähteenmäki, A; López, JM; Larionov, VM; Larionova, EG; Larionova, LV; Leto, C; Lorey, C; Mújica, R; Madejski, GM; Marchili, N; Marscher, AP; Minev, M; Modaressi, A; Morozova, DA; Mufakharov, T; Myserlis, I; Nikiforova, AA; Nikolashvili, MG; Ovcharov, E; Perri, M; Raiteri, CM; Readhead, ACS; Reimer, A; Reinhart, D; Righini, S; Rosenlehner, K; Sadun, AC; Savchenko, SS; Scherbantin, A; Schneider, L; Schoch, K; Seifert, D; Semkov, E; Sigua, LA; Singh, C; Sola, P; Sotnikova, Y; Spencer, M; Steineke, R; Stojanovic, M; Strigachev, A; Tornikoski, M; Traianou, E; Tramacere, A; Troitskaya, YV; Troitskiy, IS; Trump, JB; Tsai, A; Valcheva, A; Vasilyev, AA; Verrecchia, F; Villata, M; Vince, O; Vrontaki, K; Weaver, ZR; Zaharieva, E; Zottmann, N

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 266 巻 ( 2 ) 2023年6月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Astrophysical Journal, Supplement Series

We study the broadband emission of Mrk 501 using multiwavelength observations from 2017 to 2020 performed with a multitude of instruments, involving, among others, MAGIC, Fermi's Large Area Telescope (LAT), NuSTAR, Swift, GASP-WEBT, and the Owens Valley Radio Observatory. Mrk 501 showed an extremely low broadband activity, which may help to unravel its baseline emission. Nonetheless, significant flux variations are detected at all wave bands, with the highest occurring at X-rays and very-high-energy (VHE) 3-rays. A significant correlation (>3σ) between X-rays and VHE 3-rays is measured, supporting leptonic scenarios to explain the variable parts of the emission, also during low activity. This is further supported when we extend our data from 2008 to 2020, and identify, for the first time, significant correlations between the Swift X-Ray Telescope and Fermi-LAT. We additionally find correlations between high-energy 3-rays and radio, with the radio lagging by more than 100 days, placing the 3-ray emission zone upstream of the radio-bright regions in the jet. Furthermore, Mrk 501 showed a historically low activity in X-rays and VHE 3-rays from mid-2017 to mid-2019 with a stable VHE flux (>0.2 TeV) of 5% the emission of the Crab Nebula. The broadband spectral energy distribution (SED) of this 2 yr long low state, the potential baseline emission of Mrk 501, can be characterized with one-zone leptonic models, and with (lepto)-hadronic models fulfilling neutrino flux constraints from IceCube. We explore the time evolution of the SED toward the low state, revealing that the stable baseline emission may be ascribed to a standing shock, and the variable emission to an additional expanding or traveling shock.

DOI： 10.3847/1538-4365/acc181

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Scopus
Multiwavelength study of the galactic PeVatron candidate LHAASO J2108+5157

Abe, S; Aguasca-Cabot, A; Agudo, I; Crespo, NA; Antonelli, LA; Aramo, C; Arbet-Engels, A; Artero, M; Asano, K; Aubert, P; Baktash, A; Bamba, A; Larriva, AB; Baroncelli, L; de Almeida, UB; Barrio, JA; Batkovic, I; Baxter, J; González, JB; Bernardini, E; Bernardos, MI; Medrano, JB; Berti, A; Bhattacharjee, P; Biederbeck, N; Bigongiari, C; Bissaldi, E; Blanch, O; Bordas, P; Buisson, C; Bulgarelli, A; Burelli, I; Buscemi, M; Cardillo, M; Caroff, S; Carosi, A; Cassol, F; Cauz, D; Ceribella, G; Chai, Y; Cheng, K; Chiavassa, A; Chikawa, M; Chytka, L; Cifuentes, A; Contreras, JL; Cortina, J; Costantini, H; D'Amico, G; Dalchenko, M; De Angelis, A; de Lavergne, MD; De Lotto, B; de Menezes, R; Deleglise, G; Delgado, C; Mengual, JD; della Volpe, D; Dellaiera, M; Di Piano, A; Di Pierro, F; Di Tria, R; Di Venere, L; Díaz, C; Dominik, RM; Prester, DD; Donini, A; Dorner, D; Doro, M; Elsässer, D; Emery, G; Escudero, J; Ramazani, VF; Ferrara, G; Fiasson, A; Coromina, LF; Fröse, S; Fukami, S; Fukazawa, Y; Garcia, E; López, RG; Gasparrini, D; Geyer, D; Paiva, JG; Giglietto, N; Giordano, F; Giro, E; Gliwny, P; Godinovic, N; Grau, R; Green, D; Green, J; Gunji, S; Hackfeld, J; Hadasch, D; Hahn, A; Hashiyama, K; Hassan, T; Hayashi, K; Heckmann, L; Heller, M; Llorente, JH; Hirotani, K; Hoffmann, D; Horns, D; Houles, J; Hrabovsky, M; Hrupec, D; Hui, D; Hütten, M; Imazawa, R; Inada, T; Inome, Y; Ioka, K; Iori, M; Ishio, K; Iwamura, Y; Jacquemont, M; Martinez, IJ; Jurysek, J; Kagaya, M; Karas, V; Katagiri, H; Kataoka, J; Kerszberg, D; Kobayashi, Y; Kong, A; Kubo, H; Kushida, J; Lainez, M; Lamanna, G; Lamastra, A; Le Flour, T; Linhoff, M; Longo, F; López-Coto, R; López-Moya, M; López-Oramas, A; Loporchio, S; Lorini, A; Luque-Escamilla, PL; Majumdar, P; Makariev, M; Mandat, D; Manganaro, M; Manicò, G; Mannheim, K; Mariotti, M; Marquez, P; Marsella, G; Martí, J; Martinez, O; Martínez, G; Martínez, M; Marusevec, P; Mas-Aguilar, A; Maurin, G; Mazin, D; Guillen, EM; Micanovic, S; Miceli, D; Miener, T; Miranda, JM; Mirzoyan, R; Mizuno, T; Gonzalez, MM; Molina, E; Montaruli, T; Monteiro, I; Moralejo, A; Morcuende, D; Morselli, A; Mrakovcic, K; Murase, K; Nagai, A; Nakamori, T; Nickel, L; Nievas, M; Nishijima, K; Noda, K; Nosek, D; Nozaki, S; Ohishi, M; Ohtani, Y; Okazaki, N; Okumura, A; Orito, R; Otero-Santos, J; Palatiello, M; Paneque, D; Pantaleo, FR; Paoletti, R; Paredes, JM; Pavletic, L; Pech, M; Pecimotika, M; Pietropaolo, E; Pirola, G; Podobnik, F; Poireau, V; Polo, M; Pons, E; Prandini, E; Prast, J; Priyadarshi, C; Prouza, M; Rando, R; Rhode, W; Ribó, M; Rizi, V; Fernandez, GR; Saito, T; Sakurai, S; Sanchez, DA; Saric, T; Saturni, FG; Scherpenberg, J; Schleicher, B; Schmuckermaier, F; Schubert, JL; Schussler, F; Schweizer, T; Arroyo, MS; Sitarek, J; Sliusar, V; Spolon, A; Striskovic, J; Strzys, M; Suda, Y; Sunada, Y; Tajima, H; Takahashi, M; Takahashi, H; Takata, J; Takeishi, R; Tam, PHT; Tanaka, SJ; Tateishi, D; Temnikov, P; Terada, Y; Terauchi, K; Terzic, T; Teshima, M; Tluczykont, M; Tokanai, F; Torres, DF; Travnicek, P; Truzzi, S; Tutone, A; Uhlrich, G; Vacula, M; Acosta, MV; Verguilov, V; Viale, I; Vigliano, A; Vigorito, CF; Vitale, V; Voutsinas, G; Vovk, I; Vuillaume, T; Walter, R; Will, M; Yamamoto, T; Yamazaki, R; Yoshida, T; Yoshikoshi, T; Zywucka, N; Balbo, M; Eckert, D; Tramacere, A

ASTRONOMY & ASTROPHYSICS 673 巻 2023年5月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Astronomy and Astrophysics

Context. Several new ultrahigh-energy (UHE) γ-ray sources have recently been discovered by the Large High Altitude Air Shower Observatory (LHAASO) collaboration. These represent a step forward in the search for the so-called Galactic PeVatrons, the enigmatic sources of the Galactic cosmic rays up to PeV energies. However, it has been shown that multi-TeV γ-ray emission does not necessarily prove the existence of a hadronic accelerator in the source; indeed this emission could also be explained as inverse Compton scattering from electrons in a radiation-dominated environment. A clear distinction between the two major emission mechanisms would only be made possible by taking into account multi-wavelength data and detailed morphology of the source. Aims. We aim to understand the nature of the unidentified source LHAASO J2108+5157, which is one of the few known UHE sources with no very high-energy (VHE) counterpart. Methods. We observed LHAASO J2108+5157 in the X-ray band with XMM-Newton in 2021 for a total of 3.8 hours and at TeV energies with the Large-Sized Telescope prototype (LST-1), yielding 49 hours of good-quality data. In addition, we analyzed 12 years of Fermi-LAT data, to better constrain emission of its high-energy (HE) counterpart 4FGL J2108.0+5155. We used naima and jetset software packages to examine the leptonic and hadronic scenario of the multi-wavelength emission of the source. Results. We found an excess (3.7σ) in the LST-1 data at energies E > 3 TeV. Further analysis of the whole LST-1 energy range, assuming a point-like source, resulted in a hint (2.2σ) of hard emission, which can be described with a single power law with a photon index of Σ = 1.6 ± 0.2 the range of 0.3 - 100 TeV. We did not find any significant extended emission that could be related to a supernova remnant (SNR) or pulsar wind nebula (PWN) in the XMM-Newton data, which puts strong constraints on possible synchrotron emission of relativistic electrons. We revealed a new potential hard source in Fermi-LAT data with a significance of 4σ and a photon index of Σ = 1.9 ± 0.2, which is not spatially correlated with LHAASO J2108+5157, but including it in the source model we were able to improve spectral representation of the HE counterpart 4FGL J2108.0+5155. Conclusions. The LST-1 and LHAASO observations can be explained as inverse Compton-dominated leptonic emission of relativistic electrons with a cutoff energy of 100-30+70 TeV. The low magnetic field in the source imposed by the X-ray upper limits on synchrotron emission is compatible with a hypothesis of a PWN or a TeV halo. Furthermore, the spectral properties of the HE counterpart are consistent with a Geminga-like pulsar, which would be able to power the VHE-UHE emission. Nevertheless, the lack of a pulsar in the neighborhood of the UHE source is a challenge to the PWN/TeV-halo scenario. The UHE γ rays can also be explained as π0 decay-dominated hadronic emission due to interaction of relativistic protons with one of the two known molecular clouds in the direction of the source. Indeed, the hard spectrum in the LST-1 band is compatible with protons escaping a shock around a middle-aged SNR because of their high low-energy cut-off, but the origin of the HE γ-ray emission remains an open question.

DOI： 10.1051/0004-6361/202245086

Web of Science

Scopus
MAGIC observations provide compelling evidence of hadronic multi-TeV emission from the putative PeVatron SNR G106.3+2.7

Abe H., Abe S., Acciari V.A., Agudo I., Aniello T., Ansoldi S., Antonelli L.A., Arbet Engels A., Arcaro C., Artero M., Asano K., Baack D., Babić A., Baquero A., Barres De Almeida U., Barrio J.A., Batković I., Baxter J., Becerra González J., Bednarek W., Bernardini E., Bernardos M., Berti A., Besenrieder J., Bhattacharyya W., Bigongiari C., Biland A., Blanch O., Bonnoli G., Bošnjak , Burelli I., Busetto G., Carosi R., Carretero-Castrillo M., Castro-Tirado A.J., Ceribella G., Chai Y., Chilingarian A., Cikota S., Colombo E., Contreras J.L., Cortina J., Covino S., D'Amico G., D'Elia V., Da Vela P., Dazzi F., De Angelis A., De Lotto B., Del Popolo A., Delfino M., Delgado J., Delgado Mendez C., Depaoli D., Di Pierro F., Di Venere L., Do Souto Espiñeira E., Dominis Prester D., Donini A., Dorner D., Doro M., Elsaesser D., Emery G., Escudero J., Fallah Ramazani V., Fariña L., Fattorini A., Font L., Fruck C., Fukami S., Fukazawa Y., García López R.J., Garczarczyk M., Gasparyan S., Gaug M., Giesbrecht Paiva J.G., Giglietto N., Giordano F., Gliwny P., Godinović N., Grau R., Green D., Green J.G., Hadasch D., Hahn A., Hassan T., Heckmann L., Herrera J., Hrupec D., Hütten M., Imazawa R., Inada T., Iotov R., Ishio K., Jiménez Martínez I., Jormanainen J., Kerszberg D., Kobayashi Y., Kubo H., Kushida J.

Astronomy and Astrophysics 671 巻 2023年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Astronomy and Astrophysics

Context. Certain types of supernova remnants (SNRs) in our Galaxy are assumed to be PeVatrons, capable of accelerating cosmic rays (CRs) to ∼ PeV energies. However, conclusive observational evidence for this has not yet been found. The SNR G106.3+2.7, detected at 1- 100 TeV energies by different γ-ray facilities, is one of the most promising PeVatron candidates. This SNR has a cometary shape, which can be divided into a head and a tail region with different physical conditions. However, in which region the 100 TeV emission is produced has not yet been identified because of the limited position accuracy and/or angular resolution of existing observational data. Additionally, it remains unclear as to whether the origin of the γ-ray emission is leptonic or hadronic. Aims. With the better angular resolution provided by new MAGIC data compared to earlier γ-ray datasets, we aim to reveal the acceleration site of PeV particles and the emission mechanism by resolving the SNR G106.3+2.7 with 0.1 resolution at TeV energies. Methods. We observed the SNR G106.3+2.7 using the MAGIC telescopes for 121.7 h in total - after quality cuts - between May 2017 and August 2019. The analysis energy threshold is ∼0.2 TeV, and the angular resolution is 0.07-0.1. We examined the γ-ray spectra of different parts of the emission, whilst benefitting from the unprecedented statistics and angular resolution at these energies provided by our new data. We also used measurements at other wavelengths such as radio, X-rays, GeV γ-rays, and 10 TeV γ-rays to model the emission mechanism precisely. Results. We detect extended γ-ray emission spatially coincident with the radio continuum emission at the head and tail of SNR G106.3+2.7. The fact that we detect a significant γ-ray emission with energies above 6.0 TeV from only the tail region suggests that the emissions above 10 TeV detected with air shower experiments (Milagro, HAWC, Tibet ASγ and LHAASO) are emitted only from the SNR tail. Under this assumption, the multi-wavelength spectrum of the head region can be explained with either hadronic or leptonic models, while the leptonic model for the tail region is in contradiction with the emission above 10 TeV and X-rays. In contrast, the hadronic model could reproduce the observed spectrum at the tail by assuming a proton spectrum with a cutoff energy of ∼1 PeV for that region. Such high-energy emission in this middle-aged SNR (4-10 kyr) can be explained by considering a scenario where protons escaping from the SNR in the past interact with surrounding dense gases at present. Conclusions. The γ-ray emission region detected with the MAGIC telescopes in the SNR G106.3+2.7 is extended and spatially coincident with the radio continuum morphology. The multi-wavelength spectrum of the emission from the tail region suggests proton acceleration up to ∼PeV, while the emission mechanism of the head region could either be hadronic or leptonic.

DOI： 10.1051/0004-6361/202244931

Scopus
Gamma-ray observations of MAXI J1820+070 during the 2018 outburst

Abe H., Abe S., Acciari V. A., Aniello T., Ansoldi S., Antonelli L. A., Engels A. Arbet, Arcaro C., Artero M., Asano K., Baack D., Babic A., Baquero A., de Almeida U. Barres, Barrio J. A., Batkovic I, Baxter J., Gonzalez J. Becerra, Bednarek W., Bernardini E., Bernardos M., Berti A., Besenrieder J., Bhattacharyya W., Bigongiari C., Biland A., Blanch O., Bonnoli G., Bosnjak Z., Burelli I, Busetto G., Carosi R., Carretero-Castrillo M., Ceribella G., Chai Y., Chilingarian A., Cikota S., Colombo E., Contreras J. L., Cortina J., Covino S., D'Amico G., D'Elia V, Da Vela P., Dazzi F., De Angelis A., De Lotto B., Del Popolo A., Delfino M., Delgado J., Mendez C. Delgado, Depaoli D., Di Pierro F., Di Venere L., Prester D. Dominis, Donini A., Dorner D., Doro M., Elsaesser D., Emery G., Ramazani V. Fallah, Farina L., Fattorini A., Font L., Fruck C., Fukami S., Fukazawa Y., Lopez R. J. Garcia, Garczarczyk M., Gasparyan S., Gaug M., Paiva J. G. Giesbrecht, Giglietto N., Giordano F., Gliwny P., Godinovic N., Grau R., Green D., Green J. G., Hadasch D., Hahn A., Hassan T., Heckmann L., Herrera J., Hoang J., Hrupec D., Hutten M., Imazawa R., Inada T., Iotov R., Ishio K., Martinez I. Jimenez, Jormanainen J., Kerszberg D., Kobayashi Y., Kubo H., Kushida J., Lamastra A., Lelas D., Leone F., Lindfors E., Linhoff L., Lombardi S., Longo F., Lopez-Coto R., Lopez-Moya M., Lopez-Oramas A., Loporchio S., Lorini A., Lyard E., Fraga B. Machado de Oliveira, Majumdar P., Makariev M., Maneva G., Mang N., Manganaro M., Mangano S., Mannheim K., Mariotti M., Martinez M., Aguilar A. Mas, Mazin D., Menchiari S., Mender S., Micanovic S., Miceli D., Miener T., Miranda J. M., Mirzoyan R., Molina E., Mondal H. A., Moralejo A., Morcuende D., Moreno V, Nakamori T., Nanci C., Nava L., Neustroev V, Rosillo M. Nievas, Nigro C., Nilsson K., Nishijima K., Ekoume T. Njoh, Noda K., Nozaki S., Ohtani Y., Oka T., Okumura A., Otero-Santos J., Paiano S., Palatiello M., Paneque D., Paoletti R., Paredes J. M., Pavletic L., Persic M., Pihet M., Pirola G., Podobnik F., Moroni P. G. Prada, Prandini E., Principe G., Priyadarshi C., Puljak I, Rhode W., Ribo M., Rico J., Righi C., Rugliancich A., Sahakyan N., Saito T., Sakurai S., Satalecka K., Saturni F. G., Schleicher B., Schmidt K., Schmuckermaier F., Schubert J. L., Schweizer T., Sitarek J., Sliusar V, Sobczynska D., Spolon A., Stamerra A., Striskovic J., Strom D., Strzys M., Suda Y., Suric T., Tajima H., Takahashi M., Takeishi R., Tavecchio F., Temnikov P., Terauchi K., Terzic T., Teshima M., Tosti L., Truzzi S., Tutone A., Ubach S., van Scherpenberg J., Acosta M. Vazquez, Ventura S., Verguilov V., Viale I, Vigorito C. F., Vitale V., Vovk I, Walter R., Will M., Wunderlich C., Yamamoto T., Zaric D., Abdalla H., Aharonian F., Benkhali F. Ait, Anguner E. O., Ashkar H., Backes M., Baghmanyan V, Martins V. Barbosa, Batzofin R., Becherini Y., Berge D., Bernloehr K., Bottcher M., Boisson C., Bolmont J., de Lavergne M. de Bony, Bradascio F., Breuhaus M., Brose R., Brun F., Bulik T., Bylund T., Cangemi F., Caroff S., Casanova S., Cerruti M., Chand T., Chandra S., Chen A., Chibueze O. U., Cotter G., Cristofari P., Mbarubucyeye J. Damascene, Devin J., Djannati-Atai A., Dmytriiev A., Egberts K., Ernenwein J-P, Fiasson A., de Clairfontaine G. Fichet, Fontaine G., Fuessling M., Funk S., Gabici S., Ghafourizadeh S., Giavitto G., Glawion D., Glicenstein J. F., Goswami P., Grolleron G., Hinton J. A., Horbe M., Hoischen C., Holch T. L., Holler M., Horns D., Huang Zhiqiu, Jamrozy M., Jankowsky F., Joshi V, Jung-Richardt I, Kasai E., Katarzynski K., Katz U., Khelifi B., Kluzniak W., Komin Nu, Kosack K., Kostunin D., Lang R. G., Le Stum S., Lemiere A., Lemoine-Goumard M., Lenain J-P, Leuschner F., Lohse T., Luashvili A., Lypova I, Mackey J., Majumdar J., Malyshev D., Malyshev D., Marandon V, Marchegiani P., Marti-Devesa G., Marx R., Maurin G., Meyer M., Mitchell A., Moderski R., Mohrmann L., Montanari A., Moulin E., Muller J., Murach T., Nakashima K., de Naurois M., Nayerhoda A., Niemiec J., Noel A. Pniyana, O'Brien P., Ohm S., Olivera-Nieto L., Wilhelmi E. de Ona, Ostrowski M., Panny S., Panter M., Parsons R. D., Poireau V, Prokhorov D. A., Prokoph H., Puehlhofer G., Punch M., Quirrenbach A., Reichherzer P., Reimer A., Reimer O., Renaud M., Rieger F., Rowell G., Rudak B., Ricarte H. Rueda, Ruiz-Velasco E., Sahakian V, Salzmann H., Santangelo A., Sasaki M., Schaefer J., Schussler F., Schutte H. M., Schwanke U., Shapopi J. N. S., Sol H., Specovius A., Spencer S., Stawarz L., Steenkamp R., Steinmassl S., Steppa C., Sushch I, Suzuki H., Takahashi T., Tanaka T., Thorpe-Morgan C., Tluczykont M., Tomankova L., Tsuji N., Uchiyama Y., van Eldik C., van Soelen B., Vecchi M., Veh J., Venter C., Vink J., Wagner S. J., White R., Wierzcholska A., Wong Yu Wun, Yusafzai A., Zacharias M., Zanin R., Zargaryan D., Zdziarski A. A., Zech A., Zhu S. J., Zouari S., Zywucka N., Acharyya A., Adams C. B., Batista P., Benbow W., Capasso M., Christiansen J. L., Chromey A. J., Errando M., Falcone A., Feng Q., Finley J. P., Foote G. M., Fortson L., Furniss A., Gent A., Hanlon W. E., Hervet O., Holder J., Hona B., Humensky T. B., Jin W., Kaaret P., Kertzman M., Kherlakian M., Kleiner T. K., Kumar S., Lang M. J., Lundy M., Maier G., McGrath C. E., Millis J., Moriarty P., Mukherjee R., O'Brien S., Ong R. A., Park N., Patel S. R., Pfrang K., Pohl M., Pueschel E., Quinn J., Ragan K., Reynolds P. T., Ribeiro D., Roache E., Ryan J. L., Sadeh I, Saha L., Santander M., Sembroski G. H., Shang R., Splettstoesser M., Tak D., Tucci J. V, Weinstein A., Williams D. A., Williamson T. J., Bosch-Ramon V, Celma C., Linares M., Russell D. M., Sala G.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 517 巻 ( 4 ) 頁： 4736 - 4751 2022年12月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Monthly Notices of the Royal Astronomical Society

MAXI J1820+070 is a low-mass X-ray binary with a black hole (BH) as a compact object. This binary underwent an exceptionally bright X-ray outburst from 2018 March to October, showing evidence of a non-thermal particle population through its radio emission during this whole period. The combined results of 59.5 h of observations of the MAXI J1820+070 outburst with the H.E.S.S., MAGIC and VERITAS experiments at energies above 200 GeV are presented, together with Fermi-LAT data between 0.1 and 500 GeV, and multiwavelength observations from radio to X-rays. Gamma-ray emission is not detected from MAXI J1820+070, but the obtained upper limits and the multiwavelength data allow us to put meaningful constraints on the source properties under reasonable assumptions regarding the non-thermal particle population and the jet synchrotron spectrum. In particular, it is possible to show that, if a high-energy (HE) gamma-ray emitting region is present during the hard state of the source, its predicted flux should be at most a factor of 20 below the obtained Fermi-LAT upper limits, and closer to them for magnetic fields significantly below equipartition. During the state transitions, under the plausible assumption that electrons are accelerated up to ∼500 GeV, the multiwavelength data and the gamma-ray upper limits lead consistently to the conclusion that a potential HE and very-HE gamma-ray emitting region should be located at a distance from the BH ranging between 1011 and 1013 cm. Similar outbursts from low-mass X-ray binaries might be detectable in the near future with upcoming instruments such as CTA.

DOI： 10.1093/mnras/stac2686

Web of Science

Scopus
Active Galactic Nuclei population studies with the Cherenkov Telescope Array

Abdalla H., Abe H., Abe S., Abusleme A., Acero F., Acharyya A., Acín Portella V., Ackley K., Adam R., Adams C., Adhikari S.S., Aguado-Ruesga I., Agudo I., Aguilera R., Aguirre-Santaella A., Aharonian F., Alberdi A., Alfaro R., Alfaro J., Alispach C., Aloisio R., Alves Batista R., Amans J.P., Amati L., Amato E., Ambrogi L., Ambrosi G., Ambrosio M., Ammendola R., Anderson J., Anduze M., Angüner E.O., Antonelli L.A., Antonuccio V., Antoranz P., Anutarawiramkul R., Aragunde Gutierrez J., Aramo C., Araudo A., Araya M., Arbet-Engels A., Arcaro C., Arendt V., Armand C., Armstrong T., Arqueros F., Arrabito L., Arsioli B., Artero M., Asano K., Ascasíbar Y., Aschersleben J., Ashley M., Attinà P., Aubert P., Singh C.B., Baack D., Babic A., Backes M., Baena V., Bajtlik S., Baktash A., Balazs C., Balbo M., Ballester O., Ballet J., Balmaverde B., Bamba A., Bandiera R., Baquero Larriva A., Barai P., Barbier C., Barbosa Martins V., Barcelo M., Barkov M., Barnard M., Baroncelli L., Barres de Almeida U., Barrio J.A., Bastieri D., Batista P.I., Batkovic I., Bauer C., Bautista-González R., Baxter J., Becciani U., Becerra González J., Becherini Y., Beck G., Becker Tjus J., Bednarek W., Belfiore A., Bellizzi L., Belmont R., Benbow W., Berge D., Bernardini E., Bernardos M.I., Bernlöhr K., Berti A.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Cherenkov Telescope Array (CTA) observatory is the next generation of ground-based imaging atmospheric Cherenkov telescopes (IACTs). Building on the strengths of current IACTs, CTA is designed to achieve an order of magnitude improvement in sensitivity, with unprecedented angular and energy resolution. CTA will also increase the energy reach of IACTs, observing photons in the energy range from 20 GeV to beyond 100 TeV. These advances in performance will see CTA heralding in a new era for high-energy astrophysics, with the emphasis shifting from source discovery, to population studies and precision measurements. In this talk we discuss CTA’s ability to conduct source population studies of γ-ray bright active galactic nuclei and how this ability will enhance our understanding on the redshift evolution of this dominant γ-ray source class.

Scopus
Reconstruction of extensive air shower images of the first Large Size Telescope prototype of CTA using a novel likelihood technique

Emery G., Alispach C., Dalchenko M., Foffano L., Heller M., Montaruli T., Abe H., Aguasca A., Agudo I., Antonelli L.A., Aramo C., Armstrong T., Artero M., Asano K., Ashkar H., Aubert P., Baktash A., Bamba A., Baquero Larriva A., Baroncelli L., Barres de Almeida U., Barrio J.A., Batkovic I., Becerra González J., Bernardos M.I., Berti A., Biederbeck N., Bigongiari C., Blanch O., Bonnoli G., Bordas P., Bose D., Bulgarelli A., Burelli I., Buscemi M., Cardillo M., Caroff S., Carosi A., Cassol F., Cerruti M., Chai Y., Cheng K., Chikawa M., Chytka L., Contreras J.L., Cortina J., Costantini H., De Angelis A., de Bony de Lavergne M., Deleglise G., Delgado C., Delgado Mengual J., della Volpe D., Depaoli D., Di Pierro F., Di Venere L., Díaz C., Dominik R.M., Dominis Prester D., Donini A., Dorner D., Doro M., Elsässer D., Escudero J., Fiasson A., Fonseca M.V., Freixas Coromina L., Fukami S., Fukazawa Y., Garcia E., Garcia López R., Giglietto N., Giordano F., Gliwny P., Godinovic N., Green D., Grespan P., Gunji S., Hackfeld J., Hadasch D., Hahn A., Hassan T., Hayashi K., Heckmann L., Herrera Llorente J., Hirotani K., Hoffmann D., Horns D., Houles J., Hrabovsky M., Hrupec D., Hui D., Hütten M., Inada T., Inome Y., Iori M., Ishio K., Iwamura Y., Jacquemont M., Jimenez Martinez I.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

Ground-based gamma-ray astronomy aims at reconstructing the energy and direction of gamma rays from the extensive air showers they initiate in the atmosphere. Imaging Atmospheric Cherenkov Telescopes (IACT) collect the Cherenkov light induced by secondary charged particles in extensive air showers (EAS), creating an image of the shower in a camera positioned in the focal plane of optical systems. This image is used to evaluate the type, energy and arrival direction of the primary particle that initiated the shower. This contribution shows the results of a novel reconstruction method based on likelihood maximization. The novelty with respect to previous likelihood reconstruction methods lies in the definition of a likelihood per single camera pixel, accounting not only for the total measured charge, but also for its development over time. This leads to more precise reconstruction of shower images. The method is applied to observations of the Crab Nebula acquired with the Large Size Telescope prototype (LST-1) deployed at the northern site of the Cherenkov Telescope Array.

Scopus
Prototype Schwarzschild-Couder Telescope for the Cherenkov Telescope Array: Commissioning the Optical System

Ribeiro D., Adams C.B., Ambrosi G., Ambrosio M., Aramo C., Batista P.I., Benbow W., Bertucci B., Bissaldi E., Bitossi M., Boiano A., Bonavolontà C., Bose R., Brill A., Buckley J.H., Cameron R.A., Canestrari R., Capasso M., Caprai M., Covault C.E., Depaoli D., Di Venere L., Errando M., Fegan S., Feng Q., Fiandrini E., Furniss A., Gent A., Giglietto N., Giordano F., Giro E., Halliday R., Hervet O., Humensky T.B., Incardona S., Ionica M., Jin W., Kieda D., Licciulli F., Loporchio S., Marsella G., Masone V., Meagher K., Meures T., Mode B.A.W., Mognet S.A.I., Mukherjee R., Nieto D., Okumura A., Otte N., Pantaleo F.R., Paoletti R., Pareschi G., Di Pierro F., Pueschel E., Riitano L., Roache E., Rousselle J., Rugliancich A., Santander M., Shang R., Stiaccini L., Taylor L.P., Tosti L., Tovmassian G., Tripodo G., Vagelli V., Valentino M., Vandenbroucke J., Vassiliev V.V., Williams D.A., Yu P.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

A prototype Schwarzschild-Couder Telescope (pSCT) has been constructed at the Fred Lawrence Whipple Observatory as a candidate for the medium-sized telescopes of the Cherenkov Telescope Array Observatory (CTAO). CTAO is currently entering early construction phase of the project and once completed it will vastly improve very high energy gamma-ray detection component in multiwavelength and multi-messenger observations due to significantly improved sensitivity, angular resolution and field of view comparing to the current generation of the ground-based gamma-ray observatories H.E.S.S., MAGIC and VERITAS. The pSCT uses a dual aspheric mirror design with a 9.7 m primary mirror and 5.4 m secondary mirror, both of which are segmented. The Schwarzschild-Couder (SC) optical system (OS) selected for the prototype telescope achieves wide field of view of 8 degrees and simultaneously reduces the focal plane plate scale allowing an unprecedented compact (0.78m diameter) implementation of the high-resolution camera (6mm/0.067deg per imaging pixel with 11, 328 pixels) based on the silicon photo-multipliers (SiPMs). The OS of the telescope is designed to eliminate spherical and comatic aberrations and minimize astigmatism to radically improve off-axis imaging and consequently angular resolution across all the field of view with respect to the conventional single-mirror telescopes. Fast and high imaging resolution OS of the pSCT comes with the challenging submillimeter-precision custom alignment system, which was successfully demonstrated with an on-axis point spread function (PSF) of 2.9 arcmin prior to the first-light detection of the Crab Nebula in 2020. Ongoing commissioning activities aim to meet the on-axis PSF design goal of 2.6 arcmin, verify the off-axis performance of the pSCT OS, and develop techniques to maintain alignment stability over telescope structural deformations from pointing and temperature variations. In this contribution, we report on the commissioning status, the optical alignment procedures adopted for segmented OS, and alignment progress to verify and validate design requirements.

Scopus
Prototype Open Event Reconstruction Pipeline for the Cherenkov Telescope Array

Nöthe M., Kosack K., Nickel L., Peresano M., Abdalla H., Abe H., Abe S., Abusleme A., Acero F., Acharyya A., Acín Portella V., Ackley K., Adam R., Adams C., Adhikari S.S., Aguado-Ruesga I., Agudo I., Aguilera R., Aguirre-Santaella A., Aharonian F., Alberdi A., Alfaro R., Alfaro J., Alispach C., Aloisio R., Alves Batista R., Amans J.P., Amati L., Amato E., Ambrogi L., Ambrosi G., Ambrosio M., Ammendola R., Anderson J., Anduze M., Angüner E.O., Antonelli L.A., Antonuccio V., Antoranz P., Anutarawiramkul R., Aragunde Gutierrez J., Aramo C., Araudo A., Araya M., Arbet-Engels A., Arcaro C., Arendt V., Armand C., Armstrong T., Arqueros F., Arrabito L., Arsioli B., Artero M., Asano K., Ascasíbar Y., Aschersleben J., Ashley M., Attinà P., Aubert P., Singh C.B., Baack D., Babic A., Backes M., Baena V., Bajtlik S., Baktash A., Balazs C., Balbo M., Ballester O., Ballet J., Balmaverde B., Bamba A., Bandiera R., Baquero Larriva A., Barai P., Barbier C., Barbosa Martins V., Barcelo M., Barkov M., Barnard M., Baroncelli L., Barres de Almeida U., Barrio J.A., Bastieri D., Batista P.I., Batkovic I., Bauer C., Bautista-González R., Baxter J., Becciani U., Becerra González J., Becherini Y., Beck G., Becker Tjus J., Bednarek W., Belfiore A., Bellizzi L., Belmont R., Benbow W., Berge D.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Cherenkov Telescope Array (CTA) is the next-generation gamma-ray observatory currently under construction. It will improve over the current generation of imaging atmospheric Cherenkov telescopes (IACTs) by a factor of five to ten in sensitivity and it will be able to observe the whole sky from a combination of two sites: a northern site in La Palma, Spain, and a southern one in Paranal, Chile. CTA will also be the first open gamma-ray observatory. Accordingly, the data analysis pipeline is developed as open-source software. The event reconstruction pipeline accepts raw data of the telescopes and processes it to produce suitable input for the higher-level science tools. Its primary tasks include reconstructing the physical properties of each recorded shower and providing the corresponding instrument response functions. ctapipe is a framework providing algorithms and tools to facilitate raw data calibration, image extraction, image parameterization and event reconstruction. Its main focus is currently the analysis of simulated data but it has also been successfully applied for the analysis of data obtained with the first CTA prototype telescopes, such as the Large-Sized Telescope 1 (LST-1). pyirf is a library to calculate IACT instrument response functions, needed to obtain physics results like spectra and light curves, from the reconstructed event lists. Building on these two, protopipe is a prototype for the event reconstruction pipeline for CTA. Recent developments in these software packages will be presented.

Scopus
Prospects for Galactic transient sources detection with the Cherenkov Telescope Array

López-Oramas A., Bulgarelli A., Chaty S., Chernyakova M., Gnatyk R., Hnatyk B., Kantzas D., Markoff S., McKeague S., Mereghetti S., Mestre E., di Piano A., Romano P., Sadeh I., Sergijenko O., Sidoli L., Spolon A., de Ona Wilhelmi E., Piano G., Zampieri L., Abdalla H., Abe H., Abe S., Abusleme A., Acero F., Acharyya A., Acín Portella V., Ackley K., Adam R., Adams C., Adhikari S.S., Aguado-Ruesga I., Agudo I., Aguilera R., Aguirre-Santaella A., Aharonian F., Alberdi A., Alfaro R., Alfaro J., Alispach C., Aloisio R., Alves Batista R., Amans J.P., Amati L., Amato E., Ambrogi L., Ambrosi G., Ambrosio M., Ammendola R., Anderson J., Anduze M., Angüner E.O., Antonelli L.A., Antonuccio V., Antoranz P., Anutarawiramkul R., Aragunde Gutierrez J., Aramo C., Araudo A., Araya M., Arbet-Engels A., Arcaro C., Arendt V., Armand C., Armstrong T., Arqueros F., Arrabito L., Arsioli B., Artero M., Asano K., Ascasíbar Y., Aschersleben J., Ashley M., Attinà P., Aubert P., Singh C.B., Baack D., Babic A., Backes M., Baena V., Bajtlik S., Baktash A., Balazs C., Balbo M., Ballester O., Ballet J., Balmaverde B., Bamba A., Bandiera R., Baquero Larriva A., Barai P., Barbier C., Barbosa Martins V., Barcelo M., Barkov M., Barnard M., Baroncelli L., Barres de Almeida U., Barrio J.A., Bastieri D.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

Several types of Galactic sources, like magnetars, microquasars, novae or pulsar wind nebulae flares, display transient emission in the X-ray band. Some of these sources have also shown emission at MeV-GeV energies. However, none of these Galactic transients have ever been detected in the very-high-energy (VHE; E>100 GeV) regime by any Imaging Air Cherenkov Telescope (IACT). The Galactic Transient task force is a part of the Transient Working group of the Cherenkov Telescope Array (CTA) Consortium. The task force investigates the prospects of detecting the VHE counterpart of such sources, as well as their study following Target of Opportunity (ToO) observations. In this contribution, we will show some of the results of exploring the capabilities of CTA to detect and observe Galactic transients; we assume different array configurations and observing strategies.

Scopus
Physics Performance of the Large-Sized Telescope prototype of the Cherenkov Telescope Array

Abe H., Aguasca A., Agudo I., Antonelli L.A., Aramo C., Armstrong T., Artero M., Asano K., Ashkar H., Aubert P., Baktash A., Bamba A., Baquero Larriva A., Baroncelli L., Barres de Almeida U., Barrio J.A., Batkovic I., Becerra González J., Bernardos M.I., Berti A., Biederbeck N., Bigongiari C., Blanch O., Bonnoli G., Bordas P., Bose D., Bulgarelli A., Burelli I., Buscemi M., Cardillo M., Caroff S., Carosi A., Cassol F., Cerruti M., Chai Y., Cheng K., Chikawa M., Chytka L., Contreras J.L., Cortina J., Costantini H., Dalchenko M., De Angelis A., de Bony de Lavergne M., Deleglise G., Delgado C., Delgado Mengual J., della Volpe D., Depaoli D., Di Pierro F., Di Venere L., Díaz C., Dominik R.M., Dominis Prester D., Donini A., Dorner D., Doro M., Elsässer D., Emery G., Escudero J., Fiasson A., Foffano L., Fonseca M.V., Freixas Coromina L., Fukami S., Fukazawa Y., Garcia E., Garcia López R., Giglietto N., Giordano F., Gliwny P., Godinovic N., Green D., Grespan P., Gunji S., Hackfeld J., Hadasch D., Hahn A., Hassan T., Hayashi K., Heckmann L., Heller M., Herrera Llorente J., Hirotani K., Hoffmann D., Horns D., Houles J., Hrabovsky M., Hrupec D., Hui D., Hütten M., Inada T., Inome Y., Iori M., Ishio K., Iwamura Y., Jacquemont M., Jimenez Martinez I., Jouvin L., Jurysek J.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Large-Sized Telescope (LST) prototype of the future Cherenkov Telescope Array (CTA) is located at the Northern site of CTA, on the Canary Island of La Palma. It is designed to provide optimal performance in the lowest part of the energy range covered by CTA, observing gamma rays down to energies of tens of GeV. The LST prototype started performing astronomical observations in November 2019 during the commissioning of the telescope and it has been taking data since then. In this contribution, we will present the tuning of the characteristics of the telescope in the Monte Carlo (MC) simulations to describe the data obtained, the estimation of its angular and energy resolution, and an evaluation of its sensitivity, both with simulations and with observations of the Crab Nebula.

Scopus
Performance of the Cherenkov Telescope Array in the presence of clouds

Pecimotika M., Adamczyk K., Prester D.D., Gueta O., Hrupec D., Maier G., Mićanović S., Pavletić L., Sitarek J., Sobczyńska D., Szanecki M., Abdalla H., Abe H., Abe S., Abusleme A., Acero F., Acharyya A., Acín Portella V., Ackley K., Adam R., Adams C., Adhikari S.S., Aguado-Ruesga I., Agudo I., Aguilera R., Aguirre-Santaella A., Aharonian F., Alberdi A., Alfaro R., Alfaro J., Alispach C., Aloisio R., Alves Batista R., Amans J.P., Amati L., Amato E., Ambrogi L., Ambrosi G., Ambrosio M., Ammendola R., Anderson J., Anduze M., Angüner E.O., Antonelli L.A., Antonuccio V., Antoranz P., Anutarawiramkul R., Aragunde Gutierrez J., Aramo C., Araudo A., Araya M., Arbet-Engels A., Arcaro C., Arendt V., Armand C., Armstrong T., Arqueros F., Arrabito L., Arsioli B., Artero M., Asano K., Ascasíbar Y., Aschersleben J., Ashley M., Attinà P., Aubert P., Singh C.B., Baack D., Babic A., Backes M., Baena V., Bajtlik S., Baktash A., Balazs C., Balbo M., Ballester O., Ballet J., Balmaverde B., Bamba A., Bandiera R., Baquero Larriva A., Barai P., Barbier C., Barbosa Martins V., Barcelo M., Barkov M., Barnard M., Baroncelli L., Barres de Almeida U., Barrio J.A., Bastieri D., Batista P.I., Batkovic I., Bauer C., Bautista-González R., Baxter J., Becciani U., Becerra González J., Becherini Y., Beck G.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Cherenkov Telescope Array (CTA) is the future ground-based observatory for gamma-ray astronomy at very high energies. The atmosphere is an integral part of every Cherenkov telescope. Different atmospheric conditions, such as clouds, can reduce the fraction of Cherenkov photons produced in air showers that reach ground-based telescopes, which may affect the performance. Decreased sensitivity of the telescopes may lead to misconstructed energies and spectra. This study presents the impact of various atmospheric conditions on CTA performance. The atmospheric transmission in a cloudy atmosphere in the wavelength range from 203 nm to 1000 nm was simulated for different cloud bases and different optical depths using the MODerate resolution atmospheric TRANsmission (MODTRAN) code. MODTRAN output files were used as inputs for generic Monte Carlo simulations. The analysis was performed using the MAGIC Analysis and Reconstruction Software (MARS) adapted for CTA. As expected, the effects of clouds are most evident at low energies, near the energy threshold. Even in the presence of dense clouds, high-energy gamma rays may still trigger the telescopes if the first interaction occurs lower in the atmosphere, below the cloud base. A method to analyze very high-energy data obtained in the presence of clouds is presented. The systematic uncertainties of the method are evaluated. These studies help to gain more precise knowledge about the CTA response to cloudy conditions and give insights on how to proceed with data obtained in such conditions. This may prove crucial for alert-based observations and time-critical studies of transient phenomena.

Scopus
Performance of a proposed event-type based analysis for the Cherenkov Telescope Array

Hassan T., Abdalla H., Abe H., Abe S., Abusleme A., Acero F., Acharyya A., Acín Portella V., Ackley K., Adam R., Adams C., Adhikari S.S., Aguado-Ruesga I., Agudo I., Aguilera R., Aguirre-Santaella A., Aharonian F., Alberdi A., Alfaro R., Alfaro J., Alispach C., Aloisio R., Alves Batista R., Amans J.P., Amati L., Amato E., Ambrogi L., Ambrosi G., Ambrosio M., Ammendola R., Anderson J., Anduze M., Angüner E.O., Antonelli L.A., Antonuccio V., Antoranz P., Anutarawiramkul R., Aragunde Gutierrez J., Aramo C., Araudo A., Araya M., Arbet-Engels A., Arcaro C., Arendt V., Armand C., Armstrong T., Arqueros F., Arrabito L., Arsioli B., Artero M., Asano K., Ascasíbar Y., Aschersleben J., Ashley M., Attinà P., Aubert P., Singh C.B., Baack D., Babic A., Backes M., Baena V., Bajtlik S., Baktash A., Balazs C., Balbo M., Ballester O., Ballet J., Balmaverde B., Bamba A., Bandiera R., Baquero Larriva A., Barai P., Barbier C., Barbosa Martins V., Barcelo M., Barkov M., Barnard M., Baroncelli L., Barres de Almeida U., Barrio J.A., Bastieri D., Batista P.I., Batkovic I., Bauer C., Bautista-González R., Baxter J., Becciani U., Becerra González J., Becherini Y., Beck G., Becker Tjus J., Bednarek W., Belfiore A., Bellizzi L., Belmont R., Benbow W., Berge D., Bernardini E., Bernardos M.I., Bernlöhr K.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Cherenkov Telescope Array (CTA) will be the next-generation observatory in the field of very-high-energy (20 GeV to 300 TeV) gamma-ray astroparticle physics. Classically, data analysis in the field maximizes sensitivity by applying quality cuts on the data acquired. These cuts, optimized using Monte Carlo simulations, select higher quality events from the initial dataset. Subsequent steps of the analysis typically use the surviving events to calculate one set of instrument response functions (IRFs). An alternative approach is the use of event types, as implemented in experiments such as the Fermi-LAT. In this approach, events are divided into sub-samples based on their reconstruction quality, and a set of IRFs is calculated for each sub-sample. The sub-samples are then combined in a joint analysis, treating them as independent observations. This leads to an improvement in performance parameters such as sensitivity, angular and energy resolution. Data loss is reduced since lower quality events are included in the analysis as well, rather than discarded. In this study, machine learning methods will be used to classify events according to their expected angular reconstruction quality. We will report the impact on CTA high-level performance when applying such an event-type classification, compared to the classical procedure.

Scopus
Monte Carlo Simulations and Validation of NectarCAM, a Medium Sized Telescope Camera for CTA

Armstrong T.P., Costantini H., Glicenstein J.F., Lenain J.P., Schwanke U., Tavernier T., Abdalla H., Abe H., Abe S., Abusleme A., Acero F., Acharyya A., Acín Portella V., Ackley K., Adam R., Adams C., Adhikari S.S., Aguado-Ruesga I., Agudo I., Aguilera R., Aguirre-Santaella A., Aharonian F., Alberdi A., Alfaro R., Alfaro J., Alispach C., Aloisio R., Alves Batista R., Amans J.P., Amati L., Amato E., Ambrogi L., Ambrosi G., Ambrosio M., Ammendola R., Anderson J., Anduze M., Angüner E.O., Antonelli L.A., Antonuccio V., Antoranz P., Anutarawiramkul R., Aragunde Gutierrez J., Aramo C., Araudo A., Araya M., Arbet-Engels A., Arcaro C., Arendt V., Armand C., Armstrong T., Arqueros F., Arrabito L., Arsioli B., Artero M., Asano K., Ascasíbar Y., Aschersleben J., Ashley M., Attinà P., Aubert P., Singh C.B., Baack D., Babic A., Backes M., Baena V., Bajtlik S., Baktash A., Balazs C., Balbo M., Ballester O., Ballet J., Balmaverde B., Bamba A., Bandiera R., Baquero Larriva A., Barai P., Barbier C., Barbosa Martins V., Barcelo M., Barkov M., Barnard M., Baroncelli L., Barres de Almeida U., Barrio J.A., Bastieri D., Batista P.I., Batkovic I., Bauer C., Bautista-González R., Baxter J., Becciani U., Becerra González J., Becherini Y., Beck G., Becker Tjus J., Bednarek W., Belfiore A., Bellizzi L., Belmont R.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The upcoming Cherenkov Telescope Array (CTA) ground-based gamma-ray observatory will open up our view of the very high energy Universe, offering an improvement in sensitivity of 5-10 times that of previous experiments. NectarCAM is one of the proposed cameras for the Medium-Sized Telescopes (MST) which have been designed to cover the core energy range of CTA, from 100 GeV to 10 TeV. The final camera will be capable of GHz sampling and provide a field of view of 8 degrees with its 265 modules of 7 photomultiplier each (for a total of 1855 pixels). In order to validate the performance of NectarCAM, a partially-equipped prototype has been constructed consisting of only the inner 61-modules. It has so far undergone testing at the integration test-bench facility in CEA Paris-Saclay (France) and on a prototype of the MST structure in Adlershof (Germany). To characterize the performance of the prototype, Monte Carlo simulations were conducted using a detailed model of the 61 module camera in the CORSIKA/sim_telarray framework. This contribution provides an overview of this work including the comparison of trigger and readout performance on test-bench data and trigger and image parameterization performance during on-sky measurements.

Scopus
Monitoring the pointing of the prototype LST-1 using star reconstruction in the Cherenkov camera

Foffano L., Carosi A., Dalchenko M., Heller M., Della Volpe D., Montaruli T., Abe H., Aguasca A., Agudo I., Antonelli L.A., Aramo C., Armstrong T., Artero M., Asano K., Ashkar H., Aubert P., Baktash A., Bamba A., Baquero Larriva A., Baroncelli L., Barres de Almeida U., Barrio J.A., Batkovic I., Becerra González J., Bernardos M.I., Berti A., Biederbeck N., Bigongiari C., Blanch O., Bonnoli G., Bordas P., Bose D., Bulgarelli A., Burelli I., Buscemi M., Cardillo M., Caroff S., Cassol F., Cerruti M., Chai Y., Cheng K., Chikawa M., Chytka L., Contreras J.L., Cortina J., Costantini H., De Angelis A., de Bony de Lavergne M., Deleglise G., Delgado C., Delgado Mengual J., Depaoli D., Di Pierro F., Di Venere L., Díaz C., Dominik R.M., Dominis Prester D., Donini A., Dorner D., Doro M., Elsässer D., Emery G., Escudero J., Fiasson A., Fonseca M.V., Freixas Coromina L., Fukami S., Fukazawa Y., Garcia E., Garcia López R., Giglietto N., Giordano F., Gliwny P., Godinovic N., Green D., Grespan P., Gunji S., Hackfeld J., Hadasch D., Hahn A., Hassan T., Hayashi K., Heckmann L., Herrera Llorente J., Hirotani K., Hoffmann D., Horns D., Houles J., Hrabovsky M., Hrupec D., Hui D., Hütten M., Inada T., Inome Y., Iori M., Ishio K., Iwamura Y., Jacquemont M., Jimenez Martinez I., Jouvin L.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The first Large-Sized Telescope (LST-1) proposed for the forthcoming Cherenkov Telescope Array (CTA) has started to operate in 2019 in La Palma. The large structure of LST-1 - with a 23 m mirror dish diameter - imposes a strict control of its deformations that could affect the pointing accuracy and its overall performance. According to CTA specifications that are conceived to resolve e.g. the fine structure of galactic sources, the LST post-calibration pointing accuracy should be better than 14 arcseconds. To fulfill this requirement, the telescope pointing precision is monitored with two dedicated CCD cameras located at the dish center. The analysis of their images allows us to disentangle different systematic deformations of the structure. In this work, we investigate a complementary approach that offers the possibility to monitor the pointing of the telescope during the acquisition of sky data. After properly cleaning the events from the Cherenkov showers, the reconstructed positions of the stars imaged in the camera field of view are compared to their nominal expected positions in catalogues. This provides a direct measurement of the telescope pointing, that can be used to cross-check the other methods and as a real-time monitoring of the optical properties of the telescope and of the pointing corrections applied by the bending models. Additionally, this method benefits from not relying on specific hardware or dedicated observations. In this contribution we will illustrate this analysis and show results based on simulations of LST-1.

Scopus
HAWC J2227+610: a potential PeVatron candidate for the CTA in the northern hemisphere

Abdalla H., Abe H., Abe S., Abusleme A., Acero F., Acharyya A., Acín Portella V., Ackley K., Adam R., Adams C., Adhikari S.S., Aguado-Ruesga I., Agudo I., Aguilera R., Aguirre-Santaella A., Aharonian F., Alberdi A., Alfaro R., Alfaro J., Alispach C., Aloisio R., Alves Batista R., Amans J.P., Amati L., Amato E., Ambrogi L., Ambrosi G., Ambrosio M., Ammendola R., Anderson J., Anduze M., Angüner E.O., Antonelli L.A., Antonuccio V., Antoranz P., Anutarawiramkul R., Aragunde Gutierrez J., Aramo C., Araudo A., Araya M., Arbet-Engels A., Arcaro C., Arendt V., Armand C., Armstrong T., Arqueros F., Arrabito L., Arsioli B., Artero M., Asano K., Ascasíbar Y., Aschersleben J., Ashley M., Attinà P., Aubert P., Singh C.B., Baack D., Babic A., Backes M., Baena V., Bajtlik S., Baktash A., Balazs C., Balbo M., Ballester O., Ballet J., Balmaverde B., Bamba A., Bandiera R., Baquero Larriva A., Barai P., Barbier C., Barbosa Martins V., Barcelo M., Barkov M., Barnard M., Baroncelli L., Barres de Almeida U., Barrio J.A., Bastieri D., Batista P.I., Batkovic I., Bauer C., Bautista-González R., Baxter J., Becciani U., Becerra González J., Becherini Y., Beck G., Becker Tjus J., Bednarek W., Belfiore A., Bellizzi L., Belmont R., Benbow W., Berge D., Bernardini E., Bernardos M.I., Bernlöhr K., Berti A.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

Recent observations of the gamma-ray source HAWC J2227+610 by Tibet AS+MD and LHAASO confirm the special interest of this source as a galactic PeVatron candidate in the northern hemisphere. HAWC J2227+610 emits Very High Energy (VHE) gamma-rays up to 500 TeV, from a region coincident with molecular clouds and significantly displaced from the nearby pulsar J2229+6114. Even if this morphology favours an hadronic origin, both leptonic or hadronic models can describe the current VHE gamma-ray emission. The morphology of the source is not well constrained by the present measurements and a better characterisation would greatly help the understanding of the underlying particle acceleration mechanisms. The Cherenkov Telescope Array (CTA) will be the future most sensitive Imaging Atmospheric Cherenkov Telescope and, thanks to its unprecedented angular resolution, could contribute to better constrain the nature of this source. The present work investigates the potentiality of CTA to study the morphology and the spectrum of HAWC J2227+610. For this aim, the source is simulated assuming the hadronic model proposed by the Tibet AS+MD collaboration, recently fitted on multi-wavelength data, and two spatial templates associated to the source nearby molecular clouds. Different CTA layouts and observation times are considered. A 3D map based analysis shows that CTA is able to significantly detect the extension of the source and to attribute higher detection significance to the simulated molecular cloud template compared to the alternative one. CTA data does not allow to disentangle the hadronic and the leptonic emission models. However, it permits to correctly reproduce the simulated parent proton spectrum characterized by a ∼ 500 TeV cutoff.

Scopus
First follow-up of transient events with the CTA Large Size Telescope prototype

Kobayshi Y., Sanchez D., Abe H., Aguasca A., Agudo I., Antonelli L.A., Aramo C., Armstrong T., Artero M., Asano K., Ashkar H., Aubert P., Baktash A., Bamba A., Baquero Larriva A., Baroncelli L., Barres de Almeida U., Barrio J.A., Batkovic I., Becerra González J., Bernardos M.I., Berti A., Biederbeck N., Bigongiari C., Blanch O., Bonnoli G., Bordas P., Bose D., Bulgarelli A., Burelli I., Buscemi M., Cardillo M., Caroff S., Carosi A., Cassol F., Cerruti M., Chai Y., Cheng K., Chikawa M., Chytka L., Contreras J.L., Cortina J., Costantini H., Dalchenko M., De Angelis A., de Bony de Lavergne M., Deleglise G., Delgado C., Delgado Mengual J., della Volpe D., Depaoli D., Di Pierro F., Di Venere L., Díaz C., Dominik R.M., Dominis Prester D., Donini A., Dorner D., Doro M., Elsässer D., Emery G., Escudero J., Fiasson A., Foffano L., Fonseca M.V., Freixas Coromina L., Fukami S., Fukazawa Y., Garcia E., Garcia López R., Giglietto N., Giordano F., Gliwny P., Godinovic N., Green D., Grespan P., Gunji S., Hackfeld J., Hadasch D., Hahn A., Hassan T., Hayashi K., Heckmann L., Heller M., Herrera Llorente J., Hirotani K., Hoffmann D., Horns D., Houles J., Hrabovsky M., Hrupec D., Hui D., Hütten M., Inada T., Inome Y., Iori M., Ishio K., Iwamura Y., Jacquemont M., Jimenez Martinez I.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The recent detection of a very high energy (VHE) emission from Gamma-Ray Bursts (GRBs) above 100 GeV performed by the MAGIC and H.E.S.S. collaborations, has represented a significant, long-awaited result for the VHE astrophysics community. Although these results' scientific impact has not yet been fully exploited, the possibility to detect VHE gamma-ray signals from GRBs has always been considered crucial for clarifying the poorly known physics of these objects. Furthermore, the discovery of high-energy neutrinos and gravitational waves associated with astrophysical sources have definitively opened the era of multi-messenger astrophysics, providing unique insights into the physics of extreme cosmic accelerators. In the near future, the Cherenkov Telescope Array (CTA) will play a major role in these observations. Within this framework, the Large Size Telescopes (LSTs) will be the instruments best suited to significantly impact on short time-scale transients follow-up thanks to their fast slewing and large effective area. The observations of the early emission phase of a wide range of transient events with good sensitivity below 100 GeV will allow us to open new opportunities for time-domain astrophysics in an energy range not affected by selective absorption processes typical of other wavelengths. In this contribution, we will report about the observational program and first transients follow-up observations performed by the LST-1 telescope currently in its commissioning phase on La Palma, Canary Islands, the CTA northern hemisphere site.

Scopus
Exploring the population of Galactic very-high-energy γ-ray sources

Steppa C., Egberts K., Abdalla H., Abe H., Abe S., Abusleme A., Acero F., Acharyya A., Acín Portella V., Ackley K., Adam R., Adams C., Adhikari S.S., Aguado-Ruesga I., Agudo I., Aguilera R., Aguirre-Santaella A., Aharonian F., Alberdi A., Alfaro R., Alfaro J., Alispach C., Aloisio R., Alves Batista R., Amans J.P., Amati L., Amato E., Ambrogi L., Ambrosi G., Ambrosio M., Ammendola R., Anderson J., Anduze M., Angüner E.O., Antonelli L.A., Antonuccio V., Antoranz P., Anutarawiramkul R., Aragunde Gutierrez J., Aramo C., Araudo A., Araya M., Arbet-Engels A., Arcaro C., Arendt V., Armand C., Armstrong T., Arqueros F., Arrabito L., Arsioli B., Artero M., Asano K., Ascasíbar Y., Aschersleben J., Ashley M., Attinà P., Aubert P., Singh C.B., Baack D., Babic A., Backes M., Baena V., Bajtlik S., Baktash A., Balazs C., Balbo M., Ballester O., Ballet J., Balmaverde B., Bamba A., Bandiera R., Baquero Larriva A., Barai P., Barbier C., Barbosa Martins V., Barcelo M., Barkov M., Barnard M., Baroncelli L., Barres de Almeida U., Barrio J.A., Bastieri D., Batista P.I., Batkovic I., Bauer C., Bautista-González R., Baxter J., Becciani U., Becerra González J., Becherini Y., Beck G., Becker Tjus J., Bednarek W., Belfiore A., Bellizzi L., Belmont R., Benbow W., Berge D., Bernardini E., Bernardos M.I.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

At very high energies (VHE), the emission of γ rays is dominated by discrete sources. Due to the limited resolution and sensitivity of current-generation instruments, only a small fraction of the total Galactic population of VHE γ-ray sources has been detected significantly. The larger part of the population can be expected to contribute as a diffuse signal alongside emission originating from propagating cosmic rays. Without quantifying the source population, it is not possible to disentangle these two components. Based on the H.E.S.S. Galactic plane survey, a numerical approach has been taken to develop a model of the population of Galactic VHE γ-ray sources, which is shown to account accurately for the observational bias. We present estimates of the absolute number of sources in the Galactic Plane and their contribution to the total VHE γ-ray emission for five different spatial source distributions. Prospects for CTA and its ability to constrain the model are discussed. Finally, first results of an extension of our modelling approach using machine learning to extract more information from the available data set are presented.

Scopus
Development of an advanced SiPM camera for the Large Size Telescope of the Cherenkov Telescope Array Observatory

Bellato M., Bergnoli A., Bernasconi E., Biland A., Charbon E., Corti D., Gascón D., Gómez S., Ziȩtara K., Abe H., Aguasca A., Agudo I., Antonelli L.A., Aramo C., Armstrong T., Artero M., Asano K., Ashkar H., Aubert P., Baktash A., Bamba A., Baquero Larriva A., Baroncelli L., Barres de Almeida U., Barrio J.A., Batkovic I., Becerra González J., Bernardos M.I., Berti A., Biederbeck N., Bigongiari C., Blanch O., Bonnoli G., Bordas P., Bose D., Bulgarelli A., Burelli I., Buscemi M., Cardillo M., Caroff S., Carosi A., Cassol F., Cerruti M., Chai Y., Cheng K., Chikawa M., Chytka L., Contreras J.L., Cortina J., Costantini H., Dalchenko M., De Angelis A., de Bony de Lavergne M., Deleglise G., Delgado C., Delgado Mengual J., della Volpe D., Depaoli D., Di Pierro F., Di Venere L., Díaz C., Dominik R.M., Dominis Prester D., Donini A., Dorner D., Doro M., Elsässer D., Emery G., Escudero J., Fiasson A., Foffano L., Fonseca M.V., Freixas Coromina L., Fukami S., Fukazawa Y., Garcia E., Garcia López R., Giglietto N., Giordano F., Gliwny P., Godinovic N., Green D., Grespan P., Gunji S., Hackfeld J., Hadasch D., Hahn A., Hassan T., Hayashi K., Heckmann L., Heller M., Herrera Llorente J., Hirotani K., Hoffmann D., Horns D., Houles J., Hrabovsky M., Hrupec D., Hui D., Hütten M.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

Silicon photomultipliers (SiPMs) have become the baseline choice for cameras of the small-sized telescopes (SSTs) of the Cherenkov Telescope Array (CTA). On the other hand, SiPMs are relatively new to the field and covering large surfaces and operating at high data rates still are challenges to outperform photomultipliers (PMTs). The higher sensitivity in the near infra-red and longer signals compared to PMTs result in higher night sky background rate for SiPMs. However, the robustness of the SiPMs represents a unique opportunity to ensure long-term operation with low maintenance and better duty cycle than PMTs. The proposed camera for large size telescopes will feature 0.05◦ pixels, low power and fast front-end electronics and a fully digital readout. In this work, we present the status of dedicated simulations and data analysis for the performance estimation. The design features and the different strategies identified, so far, to tackle the demanding requirements and the improved performance are described.

Scopus
Detection of the Crab Nebula by the prototype Schwarzschild-Couder Telescope

Adams C.B., Ambrosi G., Ambrosio M., Aramo C., Batista P.I., Benbow W., Bertucci B., Bissaldi E., Bitossi M., Boiano A., Bonavolontà C., Bose R., Brill A., Brown A.M., Buckley J.H., Cameron R.A., Canestrari R., Capasso M., Caprai M., Covault C.E., Depaoli D., Di Venere L., Errando M., Fegan S., Feng Q., Fiandrini E., Furniss A., Gent A., Giglietto N., Giordano F., Giro E., Halliday R., Hervet O., Holder J., Humensky T.B., Incardona S., Ionica M., Jin W., Kieda D., Licciulli F., Loporchio S., Marsella G., Masone V., Meagher K., Meures T., Mode B.A.W., Mognet S.A.I., Mukherjee R., Okumura A., Otte N., Pantaleo F.R., Paoletti R., Pareschi G., Di Pierro F., Pueschel E., Ribeiro D., Riitano L., Roache E., Rousselle J., Rugliancich A., Santander M., Shang R., Stiaccini L., Tajima H., Taylor L.P., Tosti L., Tovmassian G., Tripodo G., Vagelli V., Valentino M., Vandenbroucke J., Vassiliev V.V., Williams D.A., Zink A.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Schwarzschild-Couder Telescope (SCT) is a medium-sized telescope technology proposed for the Cherenkov Telescope Array. It uses a novel dual-mirror optical design that removes comatic aberrations across its entire field of view. The SCT camera employs high-resolution silicon photomultiplier (SiPM) sensors with a pixel size of 4 arcminutes. A prototype SCT (pSCT) has been constructed at the Fred Lawrence Whipple Observatory in Arizona, USA. An observing campaign in 2020, with a partial camera of 1600 pixels (2.7 degrees by 2.7 degrees field of view) resulted in detection of the Crab Nebula at 8.6 sigma statistical significance. Work on the pSCT camera and optical system is ongoing to improve performance and prepare for an upcoming camera upgrade. The pSCT camera upgrade will replace the current camera modules with improved SiPMs and readout electronics and will expand the camera to its full design field of view of 8 degrees in diameter (11,328 pixels). The fully upgraded pSCT will enable next-generation very-high-energy gamma-ray astrophysics through excellent background rejection and angular resolution. In this presentation we describe first results from the successful operation of the pSCT and future plans.

Scopus
Detection methods for the Cherenkov Telescope Array at very-short exposure times

Di Piano A., Bulgarelli A., Fioretti V., Baroncelli L., Parmiggiani N., Longo F., Stamerra A., López-Oramas A., Stratta G., De Cesare G., Abdalla H., Abe H., Abe S., Abusleme A., Acero F., Acharyya A., Acín Portella V., Ackley K., Adam R., Adams C., Adhikari S.S., Aguado-Ruesga I., Agudo I., Aguilera R., Aguirre-Santaella A., Aharonian F., Alberdi A., Alfaro R., Alfaro J., Alispach C., Aloisio R., Alves Batista R., Amans J.P., Amati L., Amato E., Ambrogi L., Ambrosi G., Ambrosio M., Ammendola R., Anderson J., Anduze M., Angüner E.O., Antonelli L.A., Antonuccio V., Antoranz P., Anutarawiramkul R., Aragunde Gutierrez J., Aramo C., Araudo A., Araya M., Arbet-Engels A., Arcaro C., Arendt V., Armand C., Armstrong T., Arqueros F., Arrabito L., Arsioli B., Artero M., Asano K., Ascasíbar Y., Aschersleben J., Ashley M., Attinà P., Aubert P., Singh C.B., Baack D., Babic A., Backes M., Baena V., Bajtlik S., Baktash A., Balazs C., Balbo M., Ballester O., Ballet J., Balmaverde B., Bamba A., Bandiera R., Baquero Larriva A., Barai P., Barbier C., Barbosa Martins V., Barcelo M., Barkov M., Barnard M., Barres de Almeida U., Barrio J.A., Bastieri D., Batista P.I., Batkovic I., Bauer C., Bautista-González R., Baxter J., Becciani U., Becerra González J., Becherini Y., Beck G., Becker Tjus J., Bednarek W.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Cherenkov Telescope Array (CTA) will be the next generation ground-based observatory for very-high-energy (VHE) gamma-ray astronomy, with the deployment of tens of highly sensitive and fast-reacting Cherenkov telescopes. It will cover a wide energy range (20 GeV - 300 TeV) with unprecedented sensitivity. To maximize the scientific return, the observatory will be provided with an online software system that will perform the first analysis of scientific data in real-time. This study investigates the precision and accuracy of available science tools and analysis techniques for the short-term detection of gamma-ray sources, in terms of sky localization, detection significance and, if significant detection is achieved, a first estimation of the integral photon flux. The scope is to evaluate the feasibility of the algorithms' implementation in the real-time analysis of CTA. In this contribution we present a general overview of the methods and some of the results for the test case of the short-term detection of a gamma-ray burst afterglow, as the VHE counterpart of a gravitational wave event.

Scopus
Design and performance of the prototype Schwarzschild-Couder Telescope camera

Taylor L.P., Adams C.B., Ambrosi G., Ambrosio M., Aramo C., Batista P.I., Benbow W., Bertucci B., Bissaldi E., Bitossi M., Boiano A., Bonavolontà C., Bose R., Brill A., Brown A.M., Buckley J.H., Cameron R.A., Capasso M., Caprai M., Covault C.E., Depaoli D., Di Venere L., Errando M., Fegan S., Feng Q., Fiandrini E., Furniss A., Gent A., Giglietto N., Giordano F., Halliday R., Hervet O., Humensky T.B., Incardona S., Ionica M., Jin W., Kieda D., Licciulli F., Loporchio S., Marsella G., Masone V., Meagher K., Meures T., Mode B.A.W., Mognet S.A.I., Mukherjee R., Okumura A., Otte N., Pantaleo F.R., Paoletti R., Pareschi G., Di Pierro F., Pueschel E., Ribeiro D., Riitano L., Roache E., Ross D., Rousselle J., Rugliancich A., Santander M., Shang R., Stiaccini L., Tajima H., Taylor L.P., Tosti L., Tovmassian G., Tripodo G., Vagelli V., Valentino M., Vandenbroucke J., Vassiliev V.V., Watson J.J., White R., Williams D.A., Zink A.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Cherenkov Telescope Array (CTA) is the next-generation ground-based observatory for very-high-energy gamma-ray astronomy. An innovative 9.7 m aperture, dual-mirror Schwarzschild-Couder Telescope (SCT) design is a candidate design for CTA Medium-Sized Telescopes. A prototype SCT (pSCT) has been constructed at the Fred Lawrence Whipple Observatory in Arizona, USA. Its camera is currently partially instrumented with 1600 pixels covering a field of view of 2.7 degrees square. The small plate scale of the optical system allows densely packed silicon photomultipliers to be used, which combined with high-density trigger and waveform readout electronics enable the high-resolution camera. The camera's electronics are capable of imaging air shower development at a rate of one billion samples per second. We describe the commissioning and performance of the pSCT camera, including trigger and waveform readout performance, calibration, and absolute GPS time stamping. We also present the upgrade to the camera, which is currently underway. The upgrade will fully populate the focal plane, increasing the field of view to 8 degree diameter, and lower the front-end electronics noise, enabling a lower trigger threshold and improved reconstruction and background rejection.

Scopus
Deep-learning-driven event reconstruction applied to simulated data from a single Large-Sized Telescope of CTA

Abe H., Aguasca A., Agudo I., Antonelli L.A., Aramo C., Armstrong T., Artero M., Asano K., Ashkar H., Aubert P., Baktash A., Bamba A., Baquero Larriva A., Baroncelli L., Barres de Almeida U., Barrio J.A., Batkovic I., Becerra González J., Bernardos M.I., Berti A., Biederbeck N., Bigongiari C., Blanch O., Bonnoli G., Bordas P., Bose D., Bulgarelli A., Burelli I., Buscemi M., Cardillo M., Caroff S., Carosi A., Cassol F., Cerruti M., Chai Y., Cheng K., Chikawa M., Chytka L., Contreras J.L., Cortina J., Costantini H., Dalchenko M., De Angelis A., de Bony de Lavergne M., Deleglise G., Delgado C., Delgado Mengual J., della Volpe D., Depaoli D., Di Pierro F., Di Venere L., Díaz C., Dominik R.M., Dominis Prester D., Donini A., Dorner D., Doro M., Elsässer D., Emery G., Escudero J., Fiasson A., Foffano L., Fonseca M.V., Freixas Coromina L., Fukami S., Fukazawa Y., Garcia E., Garcia López R., Giglietto N., Giordano F., Gliwny P., Godinovic N., Green D., Grespan P., Gunji S., Hackfeld J., Hadasch D., Hahn A., Hassan T., Hayashi K., Heckmann L., Heller M., Herrera Llorente J., Hirotani K., Hoffmann D., Horns D., Houles J., Hrabovsky M., Hrupec D., Hui D., Hütten M., Inada T., Inome Y., Iori M., Ishio K., Iwamura Y., Jacquemont M., Jimenez Martinez I., Jouvin L., Jurysek J.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

When very-high-energy gamma rays interact high in the Earth's atmosphere, they produce cascades of particles that induce flashes of Cherenkov light. Imaging Atmospheric Cherenkov Telescopes (IACTs) detect these flashes and convert them into shower images that can be analyzed to extract the properties of the primary gamma ray. The dominant background for IACTs is comprised of air shower images produced by cosmic hadrons, with typical noise-to-signal ratios of several orders of magnitude. The standard technique adopted to differentiate between images initiated by gamma rays and those initiated by hadrons is based on classical machine learning algorithms, such as Random Forests, that operate on a set of handcrafted parameters extracted from the images. Likewise, the inference of the energy and the arrival direction of the primary gamma ray is performed using those parameters. State-of-the-art deep learning techniques based on convolutional neural networks (CNNs) have the potential to enhance the event reconstruction performance, since they are able to autonomously extract features from raw images, exploiting the pixel-wise information washed out during the parametrization process. Here we present the results obtained by applying deep learning techniques to the reconstruction of Monte Carlo simulated events from a single, next-generation IACT, the Large-Sized Telescope (LST) of the Cherenkov Telescope Array (CTA). We use CNNs to separate the gamma-ray-induced events from hadronic events and to reconstruct the properties of the former, comparing their performance to the standard reconstruction technique. Three independent implementations of CNN-based event reconstruction models have been utilized in this work, producing consistent results.

Scopus
Cross-calibration and combined analysis of the CTA-LST prototype and the MAGIC telescopes

Ohtani Y., Berti A., Depaoli D., Di Pierro F., Green D., Heckmann L., Hütten M., Inada T., López-Coto R., Medina E., Moralejo A., Morcuende D., Pirola G., Strzys M., Suda Y., Vovk I., Abe H., Aguasca A., Agudo I., Antonelli L.A., Aramo C., Armstrong T., Artero M., Asano K., Ashkar H., Aubert P., Baktash A., Bamba A., Baquero Larriva A., Baroncelli L., Barres de Almeida U., Barrio J.A., Batkovic I., Becerra González J., Bernardos M.I., Biederbeck N., Bigongiari C., Blanch O., Bonnoli G., Bordas P., Bose D., Bulgarelli A., Burelli I., Buscemi M., Cardillo M., Caroff S., Carosi A., Cassol F., Cerruti M., Chai Y., Cheng K., Chikawa M., Chytka L., Contreras J.L., Cortina J., Costantini H., Dalchenko M., De Angelis A., de Bony de Lavergne M., Deleglise G., Delgado C., Delgado Mengual J., della Volpe D., Di Venere L., Díaz C., Dominik R.M., Dominis Prester D., Donini A., Dorner D., Doro M., Elsässer D., Emery G., Escudero J., Fiasson A., Foffano L., Fonseca M.V., Freixas Coromina L., Fukami S., Fukazawa Y., Garcia E., Garcia López R., Giglietto N., Giordano F., Gliwny P., Godinovic N., Grespan P., Gunji S., Hackfeld J., Hadasch D., Hahn A., Hassan T., Hayashi K., Heller M., Herrera Llorente J., Hirotani K., Hoffmann D., Horns D., Houles J., Hrabovsky M., Hrupec D.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Cherenkov Telescope Array (CTA) will be the next generation gamma-ray observatory, which will consist of three kinds of telescopes of different sizes. Among those, the Large Size Telescope (LST) will be the most sensitive in the low energy range starting from 20 GeV. The prototype LST (LST-1) proposed for CTA was inaugurated in October 2018 in the northern hemisphere site, La Palma (Spain), and is currently in its commissioning phase. MAGIC is a system of two gamma-ray Cherenkov telescopes of the current generation, located approximately 100 m away from LST-1, that have been operating in stereoscopic mode since 2009. Since LST-1 and MAGIC can observe the same air shower events, we can compare the brightness of showers, estimated energies of gamma rays, and other parameters event by event, which can be used to cross-calibrate the telescopes. Ultimately, by performing combined analyses of the events triggering the three telescopes, we can reconstruct the shower geometry more accurately, leading to better energy and angular resolutions, and a better discrimination of the background showers initiated by cosmic rays. For that purpose, as part of the commissioning of LST-1, we performed joint observations of established gamma-ray sources with LST-1 and MAGIC. Also, we have developed Monte Carlo simulations for such joint observations and an analysis pipeline which finds event coincidence in the offline analysis based on their timestamps. In this work, we present the first detection of an astronomical source, the Crab Nebula, with combined observation of LST-1 and MAGIC. Moreover, we show results of the inter-telescope cross-calibration obtained using Crab Nebula data taken during joint observations with LST-1 and MAGIC.

Scopus
Commissioning of the camera of the first Large Size Telescope of the Cherenkov Telescope Array

Saito T., Delgado C., Blanch O., Artero M., Barrio J.A., Cassol F., Diaz C., Hadasch D., Hoffmann D., Houles J., Inome Y., Iori M., Jouvin L., Kerszberg D., Kobayashi Y., Kubo H., Martinez G., Mazin D., Moretti E., Nakamori T., Nozaki S., Oka T., Okumura A., Palatiello M., Polo M., Prast J., Sakurai S., Sunada Y., Takahashi M., Takeishi R., Tejedor L.A., Yamamoto T., Yoshida T., Abe H., Aguasca A., Agudo I., Antonelli L.A., Aramo C., Armstrong T., Asano K., Ashkar H., Aubert P., Baktash A., Bamba A., Baquero Larriva A., Baroncelli L., Barres de Almeida U., Batkovic I., Becerra González J., Bernardos M.I., Berti A., Biederbeck N., Bigongiari C., Bonnoli G., Bordas P., Bose D., Bulgarelli A., Burelli I., Buscemi M., Cardillo M., Caroff S., Carosi A., Cerruti M., Chai Y., Cheng K., Chikawa M., Chytka L., Contreras J.L., Cortina J., Costantini H., Dalchenko M., De Angelis A., de Bony de Lavergne M., Deleglise G., Delgado Mengual J., della Volpe D., Depaoli D., Di Pierro F., Di Venere L., Dominik R.M., Dominis Prester D., Donini A., Dorner D., Doro M., Elsässer D., Emery G., Escudero J., Fiasson A., Foffano L., Fonseca M.V., Freixas Coromina L., Fukami S., Fukazawa Y., Garcia E., Garcia López R., Giglietto N., Giordano F., Gliwny P., Godinovic N., Green D.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The first Large Size Telescope (LST-1) of the Cherenkov Telescope Array has been operational since October 2018 at La Palma, Spain. We report on the results obtained during the camera commissioning. The noise level of the readout is determined as a 0.2 p.e. level. The gain of PMTs are well equalized within 2% variation, using the calibration flash system. The effect of the night sky background on the signal readout noise as well as the PMT gain estimation are also well evaluated. Trigger thresholds are optimized for the lowest possible gamma-ray energy threshold and the trigger distribution synchronization has been achieved within 1 ns precision. Automatic rate control realizes the stable observation with 1.5% rate variation over 3 hours. The performance of the novel DAQ system demonstrates a less than 10% dead time for 15 kHz trigger rate even with sophisticated online data correction.

Scopus
Camera Calibration of the CTA-LST prototype

Kobayashi Y., Okumura A., Cassol F., Katagiri H., Sitarek J., Gliwny P., Nozaki S., Nogami Y., Abe H., Aguasca A., Agudo I., Antonelli L.A., Aramo C., Armstrong T., Artero M., Asano K., Ashkar H., Aubert P., Baktash A., Bamba A., Baquero Larriva A., Baroncelli L., Barres de Almeida U., Barrio J.A., Batkovic I., Becerra Gonzalez J., Bernardos M.I., Berti A., Biederbeck N., Bigongiari C., Blanch O., Bonnoli G., Bordas P., Bose D., Bulgarelli A., Burelli I., Buscemi M., Cardillo M., Caroff S., Carosi A., Cerruti M., Chai Y., Cheng K., Chikawa M., Chytka L., Contreras J.L., Cortina J., Costantini H., Dalchenko M., De Angelis A., de Bony de Lavergne M., Deleglise G., Delgado C., Delgado Mengual J., della Volpe D., Depaoli D., Di Pierro F., Di Venere L., Daaz C., Dominik R.M., Dominis Prester D., Donini A., Dorner D., Doro M., Elsaasser D., Emery G., Escudero J., Fiasson A., Foffano L., Fonseca M.V., Freixas Coromina L., Fukami S., Fukazawa Y., Garcia E., Garcia Lapez R., Giglietto N., Giordano F., Godinovic N., Green D., Grespan P., Gunji S., Hackfeld J., Hadasch D., Hahn A., Hassan T., Hayashi K., Heckmann L., Heller M., Herrera Llorente J., Hirotani K., Hoffmann D., Horns D., Houles J., Hrabovsky M., Hrupec D., Hui D., HÃŒtten M., Inada T., Inome Y., Iori M.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Cherenkov Telescope Array (CTA) is the next-generation gamma-ray observatory that is expected to reach one order of magnitude better sensitivity than that of current telescope arrays. The Large-Sized Telescopes (LSTs) have an essential role in extending the energy range down to 20 GeV. The prototype LST (LST-1) proposed for CTA was built in La Palma, the northern site of CTA, in 2018. LST-1 is currently in its commissioning phase and moving towards scientific observations. The LST-1 camera consists of 1855 photomultiplier tubes (PMTs) which are sensitive to Cherenkov light. PMT signals are recorded as waveforms sampled at 1 GHz rate with Domino Ring Sampler version 4 (DRS4) chips. Fast sampling is essential to achieve a low energy threshold by minimizing the integration of background light from the night sky. Absolute charge calibration can be performed by the so-called F-factor method, which allows calibration constants to be monitored even during observations. A calibration pipeline of the camera readout has been developed as part of the LST analysis chain. The pipeline performs DRS4 pedestal and timing corrections, as well as the extraction and calibration of charge and time of pulses for subsequent higher-level analysis. The performance of each calibration step is examined, and especially charge and time resolution of the camera readout are evaluated and compared to CTA requirements. We report on the current status of the calibration pipeline, including the performance of each step through to signal reconstruction, and the consistency with Monte Carlo simulations.

Scopus
Application of pattern spectra and convolutional neural networks to the analysis of simulated Cherenkov Telescope Array data

Aschersleben J., Peletier R.F., Vecchi M., Wilkinson M.H.F., Abdalla H., Abe H., Abe S., Abusleme A., Acero F., Acharyya A., Acín Portella V., Ackley K., Adam R., Adams C., Adhikari S.S., Aguado-Ruesga I., Agudo I., Aguilera R., Aguirre-Santaella A., Aharonian F., Alberdi A., Alfaro R., Alfaro J., Alispach C., Aloisio R., Alves Batista R., Amans J.P., Amati L., Amato E., Ambrogi L., Ambrosi G., Ambrosio M., Ammendola R., Anderson J., Anduze M., Angüner E.O., Antonelli L.A., Antonuccio V., Antoranz P., Anutarawiramkul R., Aragunde Gutierrez J., Aramo C., Araudo A., Araya M., Arbet-Engels A., Arcaro C., Arendt V., Armand C., Armstrong T., Arqueros F., Arrabito L., Arsioli B., Artero M., Asano K., Ascasíbar Y., Ashley M., Attinà P., Aubert P., Singh C.B., Baack D., Babic A., Backes M., Baena V., Bajtlik S., Baktash A., Balazs C., Balbo M., Ballester O., Ballet J., Balmaverde B., Bamba A., Bandiera R., Baquero Larriva A., Barai P., Barbier C., Barbosa Martins V., Barcelo M., Barkov M., Barnard M., Baroncelli L., Barres de Almeida U., Barrio J.A., Bastieri D., Batista P.I., Batkovic I., Bauer C., Bautista-González R., Baxter J., Becciani U., Becerra González J., Becherini Y., Beck G., Becker Tjus J., Bednarek W., Belfiore A., Bellizzi L., Belmont R., Benbow W., Berge D., Bernardini E.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Cherenkov Telescope Array (CTA) will be the next generation gamma-ray observatory and will be the major global instrument for very-high-energy astronomy over the next decade, offering 5 − 10 × better flux sensitivity than current generation gamma-ray telescopes. Each telescope will provide a snapshot of gamma-ray induced particle showers by capturing the induced Cherenkov emission at ground level. The simulation of such events provides images that can be used as training data for convolutional neural networks (CNNs) to determine the energy of the initial gamma rays. Compared to other state-of-the-art algorithms, analyses based on CNNs promise to further enhance the performance to be achieved by CTA. Pattern spectra are commonly used tools for image classification and provide the distributions of the shapes and sizes of various objects comprising an image. The use of relatively shallow CNNs on pattern spectra would automatically select relevant combinations of features within an image, taking advantage of the 2D nature of pattern spectra. In this work, we generate pattern spectra from simulated gamma-ray events instead of using the raw images themselves in order to train our CNN for energy reconstruction. This is different from other relevant learning and feature selection methods that have been tried in the past. Thereby, we aim to obtain a significantly faster and less computationally intensive algorithm, with minimal loss of performance.

Scopus
Analysis of the Cherenkov Telescope Array first Large-Sized Telescope real data using convolutional neural networks

Vuillaume T., Jacquemont M., de Bony de Lavergne M., Sanchez D.A., Poireau V., Maurin G., Benoit A., Lambert P., Lamanna G., Abe H., Aguasca A., Agudo I., Antonelli L.A., Aramo C., Armstrong T., Artero M., Asano K., Ashkar H., Aubert P., Baktash A., Bamba A., Baquero Larriva A., Baroncelli L., Barres de Almeida U., Barrio J.A., Batkovic I., Becerra González J., Bernardos M.I., Berti A., Biederbeck N., Bigongiari C., Blanch O., Bonnoli G., Bordas P., Bose D., Bulgarelli A., Burelli I., Buscemi M., Cardillo M., Caroff S., Carosi A., Cassol F., Cerruti M., Chai Y., Cheng K., Chikawa M., Chytka L., Contreras J.L., Cortina J., Costantini H., Dalchenko M., De Angelis A., Deleglise G., Delgado C., Delgado Mengual J., della Volpe D., Depaoli D., Di Pierro F., Di Venere L., Díaz C., Dominik R.M., Dominis Prester D., Donini A., Dorner D., Doro M., Elsässer D., Emery G., Escudero J., Fiasson A., Foffano L., Fonseca M.V., Freixas Coromina L., Fukami S., Fukazawa Y., Garcia E., Garcia López R., Giglietto N., Giordano F., Gliwny P., Godinovic N., Green D., Grespan P., Gunji S., Hackfeld J., Hadasch D., Hahn A., Hassan T., Hayashi K., Heckmann L., Heller M., Herrera Llorente J., Hirotani K., Hoffmann D., Horns D., Houles J., Hrabovsky M., Hrupec D., Hui D., Hütten M., Inada T.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Cherenkov Telescope Array (CTA) is the future ground-based gamma-ray observatory and will be composed of two arrays of imaging atmospheric Cherenkov telescopes (IACTs) located in the Northern and Southern hemispheres respectively. The first CTA prototype telescope built on-site, the Large-Sized Telescope (LST-1), is under commissioning in La Palma and has already taken data on numerous known sources. IACTs detect the faint flash of Cherenkov light indirectly produced after a very energetic gamma-ray photon has interacted with the atmosphere and generated an atmospheric shower. Reconstruction of the characteristics of the primary photons is usually done using a parameterization up to the third order of the light distribution of the images. In order to go beyond this classical method, new approaches are being developed using state-of-the-art methods based on convolutional neural networks (CNN) to reconstruct the properties of each event (incoming direction, energy and particle type) directly from the telescope images. While promising, these methods are notoriously difficult to apply to real data due to differences (such as different levels of night sky background) between Monte Carlo (MC) data used to train the network and real data. The GammaLearn project, based on these CNN approaches, has already shown an increase in sensitivity on MC simulations for LST-1 as well as a lower energy threshold. This work applies the GammaLearn network to real data acquired by LST-1 and compares the results to the classical approach that uses random forests trained on extracted image parameters. The improvements on the background rejection, event direction, and energy reconstruction are discussed in this contribution.

Scopus
Reconstruction of stereoscopic CTA events using deep learning with CTLearn

Miener T., Nieto D., Brill A., Spencer S., Contreras J.L., Abdalla H., Abe H., Abe S., Abusleme A., Acero F., Acharyya A., Acín Portella V., Ackley K., Adam R., Adams C., Adhikari S.S., Aguado-Ruesga I., Agudo I., Aguilera R., Aguirre-Santaella A., Aharonian F., Alberdi A., Alfaro R., Alfaro J., Alispach C., Aloisio R., Alves Batista R., Amans J.P., Amati L., Amato E., Ambrogi L., Ambrosi G., Ambrosio M., Ammendola R., Anderson J., Anduze M., Angüner E.O., Antonelli L.A., Antonuccio V., Antoranz P., Anutarawiramkul R., Aragunde Gutierrez J., Aramo C., Araudo A., Araya M., Arbet-Engels A., Arcaro C., Arendt V., Armand C., Armstrong T., Arqueros F., Arrabito L., Arsioli B., Artero M., Asano K., Ascasíbar Y., Aschersleben J., Ashley M., Attinà P., Aubert P., Singh C.B., Baack D., Babic A., Backes M., Baena V., Bajtlik S., Baktash A., Balazs C., Balbo M., Ballester O., Ballet J., Balmaverde B., Bamba A., Bandiera R., Baquero Larriva A., Barai P., Barbier C., Barbosa Martins V., Barcelo M., Barkov M., Barnard M., Baroncelli L., Barres de Almeida U., Barrio J.A., Bastieri D., Batista P.I., Batkovic I., Bauer C., Bautista-González R., Baxter J., Becciani U., Becerra González J., Becherini Y., Beck G., Becker Tjus J., Bednarek W., Belfiore A., Bellizzi L., Belmont R., Benbow W.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Cherenkov Telescope Array (CTA), conceived as an array of tens of imaging atmospheric Cherenkov telescopes (IACTs), is an international project for a next-generation ground-based gamma-ray observatory, aiming to improve on the sensitivity of current-generation instruments a factor of five to ten and provide energy coverage from 20 GeV to more than 300 TeV. Arrays of IACTs probe the very-high-energy gamma-ray sky. Their working principle consists of the simultaneous observation of air showers initiated by the interaction of very-high-energy gamma rays and cosmic rays with the atmosphere. Cherenkov photons induced by a given shower are focused onto the camera plane of the telescopes in the array, producing a multi-stereoscopic record of the event. This image contains the longitudinal development of the air shower, together with its spatial, temporal, and calorimetric information. The properties of the originating very-high-energy particle (type, energy, and incoming direction) can be inferred from those images by reconstructing the full event using machine learning techniques. In this contribution, we present a purely deep-learning driven, full-event reconstruction of simulated, stereoscopic IACT events using CTLearn. CTLearn is a package that includes modules for loading and manipulating IACT data and for running deep learning models, using pixel-wise camera data as input.

Scopus
The Small-Sized Telescopes for the Southern Site of the Cherenkov Telescope Array

Amans J.P., Berge D., Bonanno G., Bose R.B., Brown A.M., Buckley J.H., Chadwick P.M., Conte F., Cotter G., De Frondat F., De Simone N., Dournaux J.L., Duffy C.A., Einecke S., Fasola G., Funk S., Giavitto G., Hinton J.A., Huet J.M., La Palombara N., Lapington J.S., Laporte P., Leach S.A., Leto G., Lloyd S., Lombardi S., Nayak A., Okumura A., Pareschi G., Prokoph H., Rébert E., Ross D., Rowell G., Scuderi S., Sol H., Spencer S., Tajima H., Trois A., Vercellone S., Vink J., Watson J.J., White R., Zech A.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Cherenkov Telescope Array (CTA) will use three telescope sizes to efficiently detect cosmic gamma rays in the energy range from several tens of GeV to hundreds of TeV. The Small-Sized Telescopes (SSTs) will form the largest section of the array, covering an area of many square kilometres on the CTA southern site in Paranal, Chile. Up to 70 SSTs will be implemented by an international consortium of institutes and teams as an in-kind contribution to the CTA Observatory. The SSTs will provide unprecedented sensitivity to gamma rays above 1 TeV and the highest angular resolution of any instrument above the hard X-ray band. CTA has recently finalised the technology that will be used for the SSTs: the telescopes will be a dual-reflector design with a primary reflector of 4 m diameter, equipped with an SiPM-based camera with full waveform readout from ∼2000 channels covering a ∼9° field of view. The Schwarzschild-Couder optical configuration leads to a small plate-scale, and consequently a compact, cost-efficient camera. In this contribution, we describe the experience gained operating telescope and camera prototypes during the CTA preparatory phase, and the development of the final SST design.

Scopus
The Cherenkov Telescope Array: layout, design and performance

Abdalla H., Abe H., Abe S., Abusleme A., Acero F., Acharyya A., Acín Portella V., Ackley K., Adam R., Adams C., Adhikari S.S., Aguado-Ruesga I., Agudo I., Aguilera R., Aguirre-Santaella A., Aharonian F., Alberdi A., Alfaro R., Alfaro J., Alispach C., Aloisio R., Alves Batista R., Amans J.P., Amati L., Amato E., Ambrogi L., Ambrosi G., Ambrosio M., Ammendola R., Anderson J., Anduze M., Angüner E.O., Antonelli L.A., Antonuccio V., Antoranz P., Anutarawiramkul R., Aragunde Gutierrez J., Aramo C., Araudo A., Araya M., Arbet-Engels A., Arcaro C., Arendt V., Armand C., Armstrong T., Arqueros F., Arrabito L., Arsioli B., Artero M., Asano K., Ascasíbar Y., Aschersleben J., Ashley M., Attinà P., Aubert P., Singh C.B., Baack D., Babic A., Backes M., Baena V., Bajtlik S., Baktash A., Balazs C., Balbo M., Ballester O., Ballet J., Balmaverde B., Bamba A., Bandiera R., Baquero Larriva A., Barai P., Barbier C., Barbosa Martins V., Barcelo M., Barkov M., Barnard M., Baroncelli L., Barres de Almeida U., Barrio J.A., Bastieri D., Batista P.I., Batkovic I., Bauer C., Bautista-González R., Baxter J., Becciani U., Becerra González J., Becherini Y., Beck G., Becker Tjus J., Bednarek W., Belfiore A., Bellizzi L., Belmont R., Benbow W., Berge D., Bernardini E., Bernardos M.I., Bernlöhr K., Berti A.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Cherenkov Telescope Array (CTA) will be the next generation very-high-energy gamma-ray observatory. CTA is expected to provide substantial improvement in accuracy and sensitivity with respect to existing instruments thanks to a tenfold increase in the number of telescopes and their state-of-the-art design. Detailed Monte Carlo simulations are used to further optimise the number of telescopes and the array layout, and to estimate the observatory performance using updated models of the selected telescope designs. These studies are presented in this contribution for the two CTA stations located on the island of La Palma (Spain) and near Paranal (Chile) and for different operation and observation conditions.

Scopus
The Cherenkov Telescope Array transient and multi-messenger program

Carosi A., López-Oramas A., Longo F., Abdalla H., Abe H., Abe S., Abusleme A., Acero F., Acharyya A., Acín Portella V., Ackley K., Adam R., Adams C., Adhikari S.S., Aguado-Ruesga I., Agudo I., Aguilera R., Aguirre-Santaella A., Aharonian F., Alberdi A., Alfaro R., Alfaro J., Alispach C., Aloisio R., Alves Batista R., Amans J.P., Amati L., Amato E., Ambrogi L., Ambrosi G., Ambrosio M., Ammendola R., Anderson J., Anduze M., Angüner E.O., Antonelli L.A., Antonuccio V., Antoranz P., Anutarawiramkul R., Aragunde Gutierrez J., Aramo C., Araudo A., Araya M., Arbet-Engels A., Arcaro C., Arendt V., Armand C., Armstrong T., Arqueros F., Arrabito L., Arsioli B., Artero M., Asano K., Ascasíbar Y., Aschersleben J., Ashley M., Attinà P., Aubert P., Singh C.B., Baack D., Babic A., Backes M., Baena V., Bajtlik S., Baktash A., Balazs C., Balbo M., Ballester O., Ballet J., Balmaverde B., Bamba A., Bandiera R., Baquero Larriva A., Barai P., Barbier C., Barbosa Martins V., Barcelo M., Barkov M., Barnard M., Baroncelli L., Barres de Almeida U., Barrio J.A., Bastieri D., Batista P.I., Batkovic I., Bauer C., Bautista-González R., Baxter J., Becciani U., Becerra González J., Becherini Y., Beck G., Becker Tjus J., Bednarek W., Belfiore A., Bellizzi L., Belmont R., Benbow W., Berge D., Bernardini E.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Cherenkov Telescope Array (CTA) is a next generation ground-based very-high-energy gamma-ray observatory that will allow for observations in the >10 GeV range with unprecedented photon statistics and sensitivity. This will enable the investigation of the yet-marginally explored physics of short-time-scale transient events. CTA will thus become an invaluable instrument for the study of the physics of the most extreme and violent objects and their interactions with the surrounding environment. The CTA Transient program includes follow-up observations of a wide range of multi-wavelength and multi-messenger alerts, ranging from compact galactic binary systems to extragalactic events such as gamma-ray bursts (GRBs), core-collapse supernovae and bright AGN flares. In recent years, the first firm detection of GRBs by current Cherenkov telescope collaborations, the proven connection between gravitational waves and short GRBs, as well as the possible neutrino-blazar association with TXS 0506+056 have shown the importance of coordinated follow-up observations triggered by these different cosmic signals in the framework of the birth of multi-messenger astrophysics. In the next years, CTA will play a major role in these types of observations by taking advantage of its fast slewing (especially for the CTA Large Size Telescopes), large effective area and good sensitivity, opening new opportunities for time-domain astrophysics in an energy range not affected by selective absorption processes typical of other wavelengths. In this contribution we highlight the common approach adopted by the CTA Transients physics working group to perform the study of transient sources in the very-high-energy regime.

Scopus
Status and results of the prototype LST of CTA

Mazin D., Abe H., Aguasca A., Agudo I., Antonelli L.A., Aramo C., Armstrong T., Artero M., Asano K., Ashkar H., Aubert P., Baktash A., Bamba A., Baquero Larriva A., Baroncelli L., Barres de Almeida U., Barrio J.A., Batkovic I., Becerra González J., Bernardos M.I., Berti A., Biederbeck N., Bigongiari C., Blanch O., Bonnoli G., Bordas P., Bose D., Bulgarelli A., Burelli I., Buscemi M., Cardillo M., Caroff S., Carosi A., Cassol F., Cerruti M., Chai Y., Cheng K., Chikawa M., Chytka L., Contreras J.L., Cortina J., Costantini H., Dalchenko M., De Angelis A., de Bony de Lavergne M., Deleglise G., Delgado C., Delgado Mengual J., della Volpe D., Depaoli D., Di Pierro F., Di Venere L., Díaz C., Dominik R.M., Dominis Prester D., Donini A., Dorner D., Doro M., Elsässer D., Emery G., Escudero J., Fiasson A., Foffano L., Fonseca M.V., Freixas Coromina L., Fukami S., Fukazawa Y., Garcia E., Garcia López R., Giglietto N., Giordano F., Gliwny P., Godinovic N., Green D., Grespan P., Gunji S., Hackfeld J., Hadasch D., Hahn A., Hassan T., Hayashi K., Heckmann L., Heller M., Herrera Llorente J., Hirotani K., Hoffmann D., Horns D., Houles J., Hrabovsky M., Hrupec D., Hui D., Hütten M., Inada T., Inome Y., Iori M., Ishio K., Iwamura Y., Jacquemont M., Jimenez Martinez I., Jouvin L.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Large-Sized Telescopes (LSTs) of Cherenkov Telescope Array (CTA) are designed for gamma-ray studies focusing on low energy threshold, high flux sensitivity, rapid telescope repositioning speed and a large field of view. Once the CTA array is complete, the LSTs will be dominating the CTA performance between 20 GeV and 150 GeV. During most of the CTA Observatory construction phase, however, the LSTs will be dominating the array performance until several TeVs. In this presentation we will report on the status of the LST-1 telescope inaugurated in La Palma, Canary islands, Spain in 2018. We will show the progress of the telescope commissioning, compare the expectations with the achieved performance, and give a glance of the first physics results.

Scopus
Southern African Large Telescope Spectroscopy of BL Lacs for the CTA project

Abdalla H., Abe H., Abe S., Abusleme A., Acero F., Acharyya A., Acín Portella V., Ackley K., Adam R., Adams C., Adhikari S.S., Aguado-Ruesga I., Agudo I., Aguilera R., Aguirre-Santaella A., Aharonian F., Alberdi A., Alfaro R., Alfaro J., Alispach C., Aloisio R., Alves Batista R., Amans J.P., Amati L., Amato E., Ambrogi L., Ambrosi G., Ambrosio M., Ammendola R., Anderson J., Anduze M., Angüner E.O., Antonelli L.A., Antonuccio V., Antoranz P., Anutarawiramkul R., Aragunde Gutierrez J., Aramo C., Araudo A., Araya M., Arbet-Engels A., Arcaro C., Arendt V., Armand C., Armstrong T., Arqueros F., Arrabito L., Arsioli B., Artero M., Asano K., Ascasíbar Y., Aschersleben J., Ashley M., Attinà P., Aubert P., Singh C.B., Baack D., Babic A., Backes M., Baena V., Bajtlik S., Baktash A., Balazs C., Balbo M., Ballester O., Ballet J., Balmaverde B., Bamba A., Bandiera R., Baquero Larriva A., Barai P., Barbier C., Barbosa Martins V., Barcelo M., Barkov M., Barnard M., Baroncelli L., Barres de Almeida U., Barrio J.A., Bastieri D., Batista P.I., Batkovic I., Bauer C., Bautista-González R., Baxter J., Becciani U., Becerra González J., Becherini Y., Beck G., Becker Tjus J., Bednarek W., Belfiore A., Bellizzi L., Belmont R., Benbow W., Berge D., Bernardini E., Bernardos M.I., Bernlöhr K., Berti A.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

In the last two decades, very-high-energy gamma-ray astronomy has reached maturity: over 200 sources have been detected, both Galactic and extragalactic, by ground-based experiments. At present, Active Galactic Nuclei (AGN) make up about 40% of the more than 200 sources detected at very high energies with ground-based telescopes, the majority of which are blazars, i.e. their jets are closely aligned with the line of sight to Earth and three quarters of which are classified as high-frequency peaked BL Lac objects. One challenge to studies of the cosmological evolution of BL Lacs is the difficulty of obtaining redshifts from their nearly featureless, continuum-dominated spectra. It is expected that a significant fraction of the AGN to be detected with the future Cherenkov Telescope Array (CTA) observatory will have no spectroscopic redshifts, compromising the reliability of BL Lac population studies, particularly of their cosmic evolution. We started an effort in 2019 to measure the redshifts of a large fraction of the AGN that are likely to be detected with CTA, using the Southern African Large Telescope (SALT). In this contribution, we present two results from an on-going SALT program focused on the determination of BL Lac object redshifts that will be relevant for the CTA observatory.

Scopus
Sensitivity of the Cherenkov Telescope Array to emission from the gamma-ray counterparts of neutrino events

Sergijenko O., Brown A.M., Fiorillo D.F.G., de León A.R., Satalecka K., Tung C.F., Reimann R., Glauch T., Taboada I., Abdalla H., Abe H., Abe S., Abusleme A., Acero F., Acharyya A., Acín Portella V., Ackley K., Adam R., Adams C., Adhikari S.S., Aguado-Ruesga I., Agudo I., Aguilera R., Aguirre-Santaella A., Aharonian F., Alberdi A., Alfaro R., Alfaro J., Alispach C., Aloisio R., Alves Batista R., Amans J.P., Amati L., Amato E., Ambrogi L., Ambrosi G., Ambrosio M., Ammendola R., Anderson J., Anduze M., Angüner E.O., Antonelli L.A., Antonuccio V., Antoranz P., Anutarawiramkul R., Aragunde Gutierrez J., Aramo C., Araudo A., Araya M., Arbet-Engels A., Arcaro C., Arendt V., Armand C., Armstrong T., Arqueros F., Arrabito L., Arsioli B., Artero M., Asano K., Ascasíbar Y., Aschersleben J., Ashley M., Attinà P., Aubert P., Singh C.B., Baack D., Babic A., Backes M., Baena V., Bajtlik S., Baktash A., Balazs C., Balbo M., Ballester O., Ballet J., Balmaverde B., Bamba A., Bandiera R., Baquero Larriva A., Barai P., Barbier C., Barbosa Martins V., Barcelo M., Barkov M., Barnard M., Baroncelli L., Barres de Almeida U., Barrio J.A., Bastieri D., Batista P.I., Batkovic I., Bauer C., Bautista-González R., Baxter J., Becciani U., Becerra González J., Becherini Y., Beck G., Becker Tjus J., Bednarek W.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

We investigate the possibility of detection of the VHE gamma-ray counterparts to the neutrino astrophysical sources within the Neutrino Target of Opportunity (NToO) program of CTA using the populations simulated by the FIRESONG software to resemble the diffuse astrophysical neutrino flux measured by IceCube. We derive the detection probability for different zenith angles and geomagnetic field configurations. The difference in detectability of sources between CTA-North and CTA-South for the average geomagnetic field is not substantial. We investigate the effect of a higher night-sky background and the preliminary CTA Alpha layout on the detection probability.

Scopus
Sensitivity of the Cherenkov Telescope Array to a dark matter signal from the Galactic centre

Abdalla H., Abe H., Abe S., Abusleme A., Acero F., Acharyya A., Acín Portella V., Ackley K., Adam R., Adams C., Adhikari S.S., Aguado-Ruesga I., Agudo I., Aguilera R., Aguirre-Santaella A., Aharonian F., Alberdi A., Alfaro R., Alfaro J., Alispach C., Aloisio R., Alves Batista R., Amans J.P., Amati L., Amato E., Ambrogi L., Ambrosi G., Ambrosio M., Ammendola R., Anderson J., Anduze M., Angüner E.O., Antonelli L.A., Antonuccio V., Antoranz P., Anutarawiramkul R., Aragunde Gutierrez J., Aramo C., Araudo A., Araya M., Arbet-Engels A., Arcaro C., Arendt V., Armand C., Armstrong T., Arqueros F., Arrabito L., Arsioli B., Artero M., Asano K., Ascasíbar Y., Aschersleben J., Ashley M., Attinà P., Aubert P., Singh C.B., Baack D., Babic A., Backes M., Baena V., Bajtlik S., Baktash A., Balazs C., Balbo M., Ballester O., Ballet J., Balmaverde B., Bamba A., Bandiera R., Baquero Larriva A., Barai P., Barbier C., Barbosa Martins V., Barcelo M., Barkov M., Barnard M., Baroncelli L., Barres de Almeida U., Barrio J.A., Bastieri D., Batista P.I., Batkovic I., Bauer C., Bautista-González R., Baxter J., Becciani U., Becerra González J., Becherini Y., Beck G., Becker Tjus J., Bednarek W., Belfiore A., Bellizzi L., Belmont R., Benbow W., Berge D., Bernardini E., Bernardos M.I., Bernlöhr K., Berti A.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

High-energy gamma rays are promising tools to constrain or reveal the nature of dark matter, in particular Weakly Interacting Massive Particles. Being well into its pre-construction phase, the Cherenkov Telescope Array (CTA) will soon probe the sky in the 20 GeV - 300 TeV energy range. Thanks to its improved energy and angular resolutions as well as significantly larger effective area when compared to the current generation of Cherenkov telescopes, CTA is expected to probe heavier dark matter, with unprecedented sensitivity, reaching the thermal annihilation cross-section at 1 TeV. This talk will summarise the planned dark matter search strategies with CTA, focusing on the signal from the Galactic centre. As observed with the Fermi LAT at lower energies, this region is rather complex and CTA will be the first ground-based observatory sensitive to the large scale diffuse astrophysical emission from that region. We report on the collaboration effort to study the impact of such extended astrophysical backgrounds on the dark matter search, based on Fermi-LAT data in order to guide our observational strategies, taking into account various sources of systematic uncertainty.

Scopus
Sensitivity of CTA to gamma-ray emission from the Perseus galaxy cluster

Abdalla H., Abe H., Abe S., Abusleme A., Acero F., Acharyya A., Acín Portella V., Ackley K., Adam R., Adams C., Adhikari S.S., Aguado-Ruesga I., Agudo I., Aguilera R., Aguirre-Santaella A., Aharonian F., Alberdi A., Alfaro R., Alfaro J., Alispach C., Aloisio R., Alves Batista R., Amans J.P., Amati L., Amato E., Ambrogi L., Ambrosi G., Ambrosio M., Ammendola R., Anderson J., Anduze M., Angüner E.O., Antonelli L.A., Antonuccio V., Antoranz P., Anutarawiramkul R., Aragunde Gutierrez J., Aramo C., Araudo A., Araya M., Arbet-Engels A., Arcaro C., Arendt V., Armand C., Armstrong T., Arqueros F., Arrabito L., Arsioli B., Artero M., Asano K., Ascasíbar Y., Aschersleben J., Ashley M., Attinà P., Aubert P., Singh C.B., Baack D., Babic A., Backes M., Baena V., Bajtlik S., Baktash A., Balazs C., Balbo M., Ballester O., Ballet J., Balmaverde B., Bamba A., Bandiera R., Baquero Larriva A., Barai P., Barbier C., Barbosa Martins V., Barcelo M., Barkov M., Barnard M., Baroncelli L., Barres de Almeida U., Barrio J.A., Bastieri D., Batista P.I., Batkovic I., Bauer C., Bautista-González R., Baxter J., Becciani U., Becerra González J., Becherini Y., Beck G., Becker Tjus J., Bednarek W., Belfiore A., Bellizzi L., Belmont R., Benbow W., Berge D., Bernardini E., Bernardos M.I., Bernlöhr K., Berti A.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

In these proceedings we summarize the current status of the study of the sensitivity of the Cherenkov Telescope Array (CTA) to detect diffuse gamma-ray emission from the Perseus galaxy cluster. Gamma-ray emission is expected in galaxy clusters both from interactions of cosmic rays (CR) with the intra-cluster medium, or as a product of annihilation or decay of dark matter (DM) particles in case they are weakly interactive massive particles (WIMPs). The observation of Perseus constitutes one of the Key Science Projects to be carried out by the CTA Consortium. In this contribution, we focus on the DM-induced component of the flux. Our DM modelling includes the substructures we expect in the main halo which will boost the annihilation signal significantly. We adopt an ON/OFF observation strategy and simulate the expected gamma-ray signals. Finally we compute the expected CTA sensitivity using a likelihood maximization analysis including the most recent CTA instrument response functions. In absence of signal, we show that CTA will allow us to provide stringent and competitive constraints on TeV DM, especially for the case of DM decay.

Scopus
Searching for very-high-energy electromagnetic counterparts to gravitational-wave events with the Cherenkov Telescope Array

Patricelli B., Carosi A., Nava L., Seglar-Arroyo M., Schüssler F., Stamerra A., Adelfio A., Ashkar H., Bulgarelli A., Di Girolamo T., Di Piano A., Gasparetto T., Green J., Longo F., Agudo I., Berti A., Bissaldi E., Cella G., Circiello A., Covino S., Ghirlanda G., Humensky B., Inoue S., Lefaucheur J., Filipovic M., Razzano M., Ribeiro D., Sergijenko O., Stratta G., Vergani S., Abdalla H., Abe H., Abe S., Abusleme A., Acero F., Acharyya A., Acín Portella V., Ackley K., Adam R., Adams C., Adhikari S.S., Aguado-Ruesga I., Agudo I., Aguilera R., Aguirre-Santaella A., Aharonian F., Alberdi A., Alfaro R., Alfaro J., Alispach C., Aloisio R., Alves Batista R., Amans J.P., Amati L., Amato E., Ambrogi L., Ambrosi G., Ambrosio M., Ammendola R., Anderson J., Anduze M., Angüner E.O., Antonelli L.A., Antonuccio V., Antoranz P., Anutarawiramkul R., Aragunde Gutierrez J., Aramo C., Araudo A., Araya M., Arbet-Engels A., Arcaro C., Arendt V., Armand C., Armstrong T., Arqueros F., Arrabito L., Arsioli B., Artero M., Asano K., Ascasíbar Y., Aschersleben J., Ashley M., Attinà P., Aubert P., Singh C.B., Baack D., Babic A., Backes M., Baena V., Bajtlik S., Baktash A., Balazs C., Balbo M., Ballester O., Ballet J., Balmaverde B., Bamba A., Bandiera R., Baquero Larriva A.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The detection of electromagnetic (EM) emission following the gravitational wave (GW) event GW170817 opened the era of multi-messenger astronomy with GWs and provided the first direct evidence that at least a fraction of binary neutron star (BNS) mergers are progenitors of short Gamma-Ray Bursts (GRBs). GRBs are also expected to emit very-high energy (VHE, > 100 GeV) photons, as proven by the recent MAGIC and H.E.S.S. observations. One of the challenges for future multi-messenger observations will be the detection of such VHE emission from GRBs in association with GWs. In the next years, the Cherenkov Telescope Array (CTA) will be a key instrument for the EM follow-up of GW events in the VHE range, owing to its unprecedented sensitivity, rapid response, and capability to monitor a large sky area via scan-mode operation. We present the CTA GW follow-up program, with a focus on the searches for short GRBs possibly associated with BNS mergers. We investigate the possible observational strategies and we outline the prospects for the detection of VHE EM counterparts to transient GW events.

Scopus
ROBAST 3

Okumura A.

Proceedings of Science 395 巻 2022年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The ROOT-based simulator for ray tracing (ROBAST) is an open-source C++ library to simulate various types of cosmic-ray (CR) and gamma-ray telescopes. It is used in multiple purposes in all the different telescope designs of the Cherenkov Telescope Array and is a promising tool for use in other future projects in optics simulations. We have released ROBAST 3 that supports interference calculations in multilayer coating in addition to geometrical optics. Here, we present its new functionality and several recent applications in future CR telescopes.

Scopus
Design and performance of the prototype Schwarzschild-Couder telescope camera

Adams Colin B., Ambrosi Giovanni, Ambrosio Michelangelo, Aramo Carla, Arlen Timothy, Benbow Wystan, Bertucci Bruna, Bissaldi Elisabetta, Biteau Jonathan, Bitossi Massimiliano, Boiano Alfonso, Bonavolonta Carmela, Bose Richard, Bouvier Aurelien, Buscemi Mario, Brill Aryeh, Brown Anthony M., Buckley James H., Canestrari Rodolfo, Capasso Massimo, Caprai Mirco, Coppi Paolo, Covault Corbin E., Depaoli Davide, Di Venere Leonardo, Errando Manel, Fegan Stephan, Feng Qi, Fiandrini Emanuele, Furniss Amy, Garczarczyk Markus, Gent Alasdair, Giglietto Nicola, Giordano Francesco, Giro Enrico, Halliday Robert, Hervet Olivier, Hughes Gareth, Incardona Simone, Humensky Thomas B., Ionica Maria, Jin Weidong, Johnson Caitlin A., Kieda David, Krennrich Frank, Kuznetsov Andrey, Lapington Jon, Licciulli Francesco, Loporchio Serena, Marsella Giovanni, Masone Vincenzo, Meagher Kevin, Meures Thomas, Mode Brent A. W., Mognet Samuel A. I, Mukherjee Reshmi, Okumura Akira, Pantaleo Francesca R., Paoletti Riccardo, Di Pierro Federico, Ribeiro Deivid, Riitano Luca, Roache Emmet, Ross Duncan, Rousselle Julien, Rugliancich Andrea, Santander Marcos, Schneider Michael, Schoorlemmer Harm, Shang Ruo-Yu, Stevenson Brandon, Stiaccini Leonardo, Tajima Hiroyasu, Taylor Leslie P., Thornhill Julian, Tosti Luca, Tripodo Giovanni, Vagelli Valerio, Valentino Massimo, Vandenbroucke Justin, Vassiliev Vladimir V., Wakely Scott P., Watson Jason J., White Richard, Wilcox Patrick, Williams David A., Wood Matthew, Yu Peter, Zink Adrian

JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS 8 巻 ( 1 ) 2022年1月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Journal of Astronomical Telescopes, Instruments, and Systems

The prototype Schwarzschild-Couder Telescope (pSCT) is a candidate for a medium-sized telescope in the Cherenkov Telescope Array. The pSCT is based on a dual-mirror optics design that reduces the plate scale and allows for the use of silicon photomultipliers as photodetectors. The prototype pSCT camera currently has only the central sector instrumented with 25 camera modules (1600 pixels), providing a 2.68-deg field of view (FoV). The camera electronics are based on custom TARGET (TeV array readout with GSa/s sampling and event trigger) application-specific integrated circuits. Field programmable gate arrays sample incoming signals at a gigasample per second. A single backplane provides camera-wide triggers. An upgrade of the pSCT camera that will fully populate the focal plane is in progress. This will increase the number of pixels to 11,328, the number of backplanes to 9, and the FoV to 8.04 deg. Here, we give a detailed description of the pSCT camera, including the basic concept, mechanical design, detectors, electronics, current status, and first light.

DOI： 10.1117/1.JATIS.8.1.014007

Web of Science

Scopus
The Small-Sized Telescope of CTAO

Tagliaferri G., Antonelli A., Arnesen T., Aschersleben J., Attina P., Balbo M., Bang S., Barcelo M., Baryshev A., Bellassai G., Berge D., Bicknell C., Bigongiari C., Bonnoli G., Bouley F., Brown A., Bulgarelli A., Cappi M., Caraveo P., Caschera S., Chadwick P., Conte F., Cotter G., Cristofari P., De Frondat F., Dal Pino E. De Gouveia, De Simone N., Depaoli D., Dournaux J-L, Duffy C., Einecke S., Fermino C., Funk S., Gargano C., Giavitto G., Giuliani A., Greenshaw T., Hinton J., Huet J-M, Iovenitti S., La Palombara N., Lapington J., Laporte P., Leach S., Lessio L., Leto G., Lloyd S., Lucarelli F., Lombardi S., Macchi A., Martinetti E., Micciche A., Millul R., Mineo T., Mitsunari T., Nayak A., Nicotra G., Okumura A., Pareschi G., Penno M., Prokoph H., Rebert E., Righi C., Rulten C., Russo F., Sanchez R. Zanmar, Saturni F. G., Schaefer J., Schwab B., Scuderi S., Sironi G., Sliusar V, Sol H., Spencer S., Stamerra A., Tajima H., Tavecchio F., Tosti G., Trois A., Vecchi M., Vercellone S., Vink J., Walter R., Watson J., White R., Zanin R., Zampieri L., Zech A., Zink A.

GROUND-BASED AND AIRBORNE TELESCOPES IX 12182 巻 2022年

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of SPIE - The International Society for Optical Engineering

The Cherenkov Telescope Array Observatory (CTAO) consists of three types of telescopes: large-sized (LST), mediumsized (MST), and small-sized (SST), distributed in two observing sites (North and South). For the CTA South "Alpha Configuration"the construction and installation of 37 (+5) SST telescopes (a number that could increase up to 70 in future upgrades) are planned. The SSTs are developed by an international consortium of institutes that will provide them as an in-kind contribution to CTAO. The SSTs rely on a Schwarzschild-Couder-like dual-mirror polynomial optical design, with a primary mirror of 4 m diameter, and are equipped with a focal plane camera based on SiPM detectors covering a field of view of ∼9°. The current SST concept was validated by developing the prototype dual-mirror ASTRI-Horn Cherenkov telescope and the CHEC-S SiPM focal plane camera. In this contribution, we will present an overview of the SST key technologies, the current status of the SST project, and the planned schedule.

DOI： 10.1117/12.2627956

Web of Science

Scopus
Camera design and performance of the prototype Schwarzschild-Couder Telescope for the Cherenkov Telescope Array

Adams C., Ambrosi G., Ambrosio M., Aramo C., Benbow W., Bertucci B., Bissaldi E., Bitossi M., Boiano A., Bonavolontá C., Bose R., Brill A., Buckley J.H., Caprai M., Di Venere L., Feng Q., Fiandrini E., Giglietto N., Giordano F., Hervet O., Hughes G., Humensky T.B., Ionica M., Jin W., Kaaret P., Kieda D., Kim B., Licciulli F., Loporchio S., Masone V., Meures T., Mode B.A.W., Mukherjee R., Pantaleo F.R., Okumura A., Petrashyk A., Powell J., Paoletti R., Ribeiro D., Rugliancich A., Santander M., Shang R., Stevenson B., Stiaccini L., Taylor L.P., Tosti L., Vagelli V., Valentino M., Vandenbroucke J., Vassiliev V., Wilcox P., Williams D.A.

Proceedings of Science 358 巻 2021年7月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Schwarzschild-Couder Telescope (SCT) is a candidate technology for a medium-sized telescope within the Cherenkov Telescope Array, the next generation ground based observatory for very high energy gamma ray astronomy. The SCT uses a novel two-mirror design and is expected to yield improvements in field of view and image resolution compared to traditional Cherenkov telescopes based on single-mirror-dish optics. To match the improved optical resolution, challenging requirements of high channel count and density at low power consumption must be overcome by the camera. The prototype camera, currently commissioned and tested on the prototype SCT, has been developed based on millimeter scale SiPM pixels and a custom high density digitizer ASIC, TARGET, to provide 1600 pixels spanning a 2.7 degree field of view while being able to sample nanosecond photon pulses. It is mechanically designed to allow for an upgrade to 11,328 pixels covering a field of view of 8 degrees and demonstrating the full potential of the technology. The camera was installed on the telescope in 2018. We will present its design and performance including first light data.

Scopus
Prototype Schwarzschild-Couder Telescope for the Cherenkov Telescope Array: Commissioning Status of the Optical System

Adams C., Ambrosi G., Ambrosio M., Aramo C., Benbow W., Bertucci B., Bissaldi E., Bitossi M., Boiano A., Bonavolontà C., Bose R., Brill A., Buckley J.H., Caprai M., Covault C.E., Di Venere L., Fegan S., Feng Q., Fiandrini E., Gent A., Giglietto N., Giordano F., Halliday R., Hervet O., Hughes G., Humensky T.B., Ionica M., Jin W., Kaaret P., Kieda D., Kim B., Licciulli F., Loporchio S., Masone V., Meures T., Mode B.A.W., Mukherjee R., Okumura A., Otte N., Pantaleo F.R., Paoletti R., Petrashyk A., Powell J., Powell K., Ribeiro D., Rousselle J., Rugliancich A., Santander M., Shang R., Stevenson B., Stiaccini L., Taylor L.P., Tosti L., Vagelli V., Valentino M., Vandenbroucke J., Vassiliev V., Wilcox P., Williams D.A.

Proceedings of Science 358 巻 2021年7月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Cherenkov Telescope Array (CTA), with more than 100 telescopes, will be the largest ever ground-based gamma-ray observatory and is expected to greatly improve on both gamma-ray detection sensitivity and energy coverage compared to current-generation detectors. The 9.7-m Schwarzschild-Couder telescope (SCT) is one of the two candidates for the medium size telescope (MST) design for CTA. The novel aplanatic dual-mirror SCT design offers a wide field-of-view with a compact plate scale, allowing for a large number of camera pixels that improves the angular resolution and reduce the night sky background noise per pixel compared to the traditional single-mirror Davies-Cotton (DC) design of ground-based gamma-ray telescopes. The production, installation, and the alignment of the segmented aspherical mirrors are the main challenges for the realization of the SCT optical system. In this contribution, we report on the commissioning status, the alignment procedures, and initial alignment results during the initial commissioning phase of the optical system of the prototype SCT.

Scopus
Development and operations of INFN optical modules for the SCT Telescope camera proposed for the Cherenkov Telescope Array Observatory

Adams C., Ambrosi G., Ambrosio M., Aramo C., Benbow W., Bertucci B., Bissaldi E., Bitossi M., Boiano A., Bonavolontà C., Bose R., Brill A., Buckley J.H., Caprai M., Covault C.E., Di Venere L., Feng Q., Fiandrini E., Gent A., Giglietto N., Giordano F., Halliday R., Hervet O., Hughes G., Humensky T.B., Ionica M., Jin W., Kaaret P., Kieda D., Kim B., Licciulli F., Loporchio S., Masone V., Meures T., Mode B.A.W., Mukherjee R., Okumura A., Otte N., Pantaleo F.R., Paoletti R., Petrashyk A., Powell J., Powell K., Ribeiro D., Rugliancich A., Santander M., Shang R., Stevenson B., Stiaccini L., Taylor L.P., Tosti L., Vagelli V., Valentino M., Vandenbroucke J., Vassiliev V., Wilcox P., Williams D.A.

Proceedings of Science 358 巻 2021年7月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Schwarzschild-Couder Telescope (SCT) is a proposal for the Medium Size Telescopes of the Cherenkov Telescope Array. Its concept is based on a two-mirror optical system designed to improve the telescope field of view and image resolution with respect to the single mirror Davies-Cotton solution. The SCT camera is planned to be instrumented with 177 photodetection modules, each composed of 64 Silicon Photomultiplier (SiPM) pixels. The third generation of 6×6 mm2 high density NUV SiPMs (NUV-HD3) produced by Fondazione Bruno Kessler (FBK) in collaboration with INFN has been used to equip optical units to be integrated on the upgrade of the camera of the SCT prototype (pSCT). Each optical unit is composed of an array of 16 NUV-HD3 SiPMs coupled with the front-end electronics, which is designed for full-waveform nanosecond readout and digitization using the TARGET-7 ASIC. Several optical units have been assembled and tested in the laboratories of INFN and have been integrated on the camera of the pSCT telescope, that is currently operating at the Fred Lawrence Whipple Observatory. In this contribution we report on the development, assembly and calibration of the optical units that are currently taking data on the pSCT camera.

Scopus
The calibration of the first Large-Sized Telescope of the Cherenkov Telescope Array

Sakurai S., Depaoli D., López-Coto R., Becerra González J., Berti A., Blanch O., Cassol F., Chiavassa A., Corti D., De Angelis A., Delgado C., Díaz C., Di Pierro F., Di Venere L., Doro M., Fernández-Barral A., Giordano F., Griffiths S., Hadasch D., Inome Y., Jouvin L., Kerszberg D., Kubo H., López-Oramas A., Mallamaci M., Mariotti M., Martínez G., Masuda S., Mazin D., Moralejo A., Moretti E., Nagayoshi T., Ninci D., Nogués L., Nozaki S., Okumura A., Paoletti R., Penil P., Pillera R., Pio C., Rando R., Rotondo F., Rugliancich A., Saito T., Sunada Y., Suzuki M., Takahashi M., Tejedor L.A., Vallania P., Vigorito C., Yamamoto T., Yoshida T.

Proceedings of Science 358 巻 2021年7月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Cherenkov Telescope Array (CTA) represents the next generation of very high-energy gamma-ray observatory, which will provide broad coverage of gamma rays from 20 GeV to 300 TeV with unprecedented sensitivity. CTA will employ three different sizes of telescopes, and the Large-Sized Telescopes (LSTs) of 23-m diameter dish will provide the sensitivity in the lowest energies down to 20 GeV. The first LST prototype has been inaugurated in October 2018 at La Palma (Canary Islands, Spain) and has entered the commissioning phase. The camera of the LST consists of 265 PMT modules. Each module is equipped with seven high-quantum-efficiency Photomultiplier Tubes (PMTs), a slow control board, and a readout board. Ensuring high uniformity and precise characterization of the camera is the key aspects leading to the best performance and low systematic uncertainty of the LST cameras. Therefore, prior to the installation on site, we performed a quality check of all PMT modules. Moreover, the absolute calibration of light throughput is essential to reconstruct the amount of light received by the telescope. The amount of light is affected by the atmosphere, by the telescope optical system and camera, and can be calibrated using the ring-shaped images produced by cosmic-ray muons. In this contribution, we will show the results of off-site quality control of PMT modules and on-site calibration using muon rings. We will also highlight the status of the development of Silicon Photomultiplier modules that could be considered as a replacement of PMT modules for further improvement of the camera.

Scopus
Using Muon Rings for the Optical Throughput Calibration of the Cherenkov Telescope Array

Gaug M., Fegan S., Mitchell A., Maccarone M.C., Mineo T., Okumura A.

Proceedings of Science 358 巻 2021年7月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

Muon ring images observed with Imaging Atmospheric Cherenkov Telescopes (IACTs) provide a powerful means to calibrate the optical throughput of IACTs and monitor their optical point spread function. We investigate whether muons ring images can be used as the primary optical throughput calibration method for the telescopes of the future Cherenkov Telescope Array (CTA) and find several additional systematic effects in comparison to previous works. To ensure that the method achieves the accuracy required by CTA, these systematic effects need to be taken into account and minor modifications to the hardware and analysis are necessary. We derive analytic estimates for the expected muon data rates to be used for optical throughput calibration, monitoring of the optical point spread function, with achievable statistical and systematic uncertainties, and explore the potential of muon ring images as a secondary method of camera pixel flat-fielding.

Scopus
Upgrading the Prototype Schwarzschild-Couder Telescope Camera to a Wide-Field, High-Resolution Instrument

Adams C., Ambrosi G., Ambrosio M., Aramo C., Benbow W., Bertucci B., Bissaldi E., Bitossi M., Boiano A., Bonavolontà C., Bose R., Brill A., Buckley J.H., Caprai M., Covault C.E., Di Venere L., Feng Q., Fiandrini E., Gent A., Giglietto N., Giordano F., Halliday R., Hervet O., Hughes G., Humensky T.B., Ionica M., Jin W., Kaaret P., Kieda D., Kim B., Licciulli F., Loporchio S., Masone V., Meures T., Mode B.A.W., Mukherjee R., Okumura A., Otte N., Pantaleo F.R., Paoletti R., Petrashyk A., Powell J., Powell K., Ribeiro D., Rugliancich A., Santander M., Shang R., Stevenson B., Stiaccini L., Taylor L.P., Tosti L., Vagelli V., Valentino M., Vandenbroucke J., Vassiliev V., Wilcox P., Williams D.A.

Proceedings of Science 358 巻 2021年7月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

The Schwarzschild-Couder Telescope (SCT) is a candidate technology for a medium-sized telescope within the Cherenkov Telescope Array. It is expected to yield substantial improvements in field of view and image resolution compared to traditional telescopes based on Davies-Cotton optics. To match the improved optical resolution, challenging requirements of high channel count and density at low power consumption have to be met by the camera. An initial prototype camera, with 1600 pixels spanning a 2.7◦ field of view, was installed on the prototype SCT in 2018. A project is now underway to upgrade the camera by increasing its pixel count and field of view by factors of 7 and 3, respectively (to 11,328 pixels and 8.0◦). At the same time, the electronics design is being improved in order to lower the gamma-ray energy threshold and thereby provide an instrument especially well-suited for scientific studies related to extended sources and multimessenger astronomy.

Scopus
Detection of the Crab Nebula with the 9.7 m prototype Schwarzschild-Couder telescope

Adams C. B., Alfaro R., Ambrosi G., Ambrosio M., Aramo C., Arlen T., Batista P. I, Benbow W., Bertucci B., Bissaldi E., Biteau J., Bitossi M., Boiano A., Bonavolonta C., Bose R., Bouvier A., Brill A., Brown A. M., Buckley J. H., Byrum K., Cameron R. A., Canestrari R., Capasso M., Caprai M., Covault C. E., Depaoli D., Errando M., Fegan S., Feng Q., Fiandrini E., Foote G., Fortin P., Funk S., Furniss A., Garfias F., Gent A., Giglietto N., Giordano F., Giro E., Gonzalez M. M., Guarino V, Halliday R., Hervet O., Holder J., Hughes G., Humensky T. B., Ionica M., Iriarte A., Jin W., Johnson C. A., Kaaret P., Kieda D., Kim B., Kuznetsov A., Lapington J. S., Licciulli F., Loporchio S., Masone V, Meagher K., Meures T., Mode B. A. W., Mognet S. A. I, Mukherjee R., Nguyen T., Nieto D., Okumura A., Otte N., La Palombara N., Pantaleo F. R., Paoletti R., Pareschi G., Petrashyk A., Di Pierro F., Pueschel E., Reynolds P. T., Ribeiro D., Richards G., Roache E., Ross D., Rousselle J., Rugliancich A., Ruiz-Diaz-Soto J., Santander M., Schlenstedt S., Schneider M., Scuderi S., Shang R., Sironi G., Stevenson B., Stiaccini L., Tajima H., Taylor L. P., Thornhill J., Tosti L., Tovmassian G., Vagelli V., Valentinoa M., Vandenbroucke J., Vassiliev V. V., Di Venere L., Wakely S. P., Watson J. J., White R., Wilcoxa P., Williams D. A., Wood M., Yu P., Zink A.

ASTROPARTICLE PHYSICS 128 巻 2021年3月

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掲載種別：研究論文（学術雑誌）出版者・発行元：Astroparticle Physics

DOI： 10.1016/j.astropartphys.2021.102562

Web of Science

Scopus
Sensitivity of the Cherenkov Telescope Array to a dark matter signal from the Galactic centre

Acharyya A., Adam R., Adams C., Agudo I, Aguirre-Santaella A., Alfaro R., Alfaro J., Alispach C., Aloisio R., Batista R. Alves, Amati L., Ambrosi G., Anguner E. O., Antonelli L. A., Aramo C., Araudo A., Armstrong T., Arqueros F., Asano K., Ascasibar Y., Ashley M., Balazs C., Ballester O., Baquero Larriva A., Martins V. Barbosa, Barkov M., de Almeida U. Barres, Barrio J. A., Bastieri D., Becerra J., Beck G., Tjus J. Becker, Benbow W., Benito M., Berge D., Bernardini E., Bernloehr K., Berti A., Bertucci B., Beshley V, Biasuzzi B., Biland A., Bissaldi E., Biteau J., Blanch O., Blazek J., Bocchino F., Boisson C., Arbeletche L. Bonneau, Bordas P., Bosnjak Z., Bottacini E., Bozhilov V, Bregeon J., Brill A., Bringmann T., Brown A. M., Brun P., Brun F., Bruno P., Bulgarelli A., Burton M., Burtovoi A., Buscemi M., Cameron R., Capasso M., Caproni A., Capuzzo-Dolcetta R., Caraveo P., Carosi R., Carosi A., Casanova S., Cascone E., Cassol F., Catalani F., Cauz D., Cerruti M., Chadwick P., Chaty S., Chen A., Chernyakova M., Chiaro G., Chiavassa A., Chikawa M., Chudoba J., Colak M., Conforti V, Coniglione R., Conte F., Contreras J. L., Coronado-Blazquez J., Costa A., Costantini H., Cotter G., Cristofari P., D'Ai A., D'Ammando A., Damone L. A., Daniel M. K., Dazzi F., De Angelis A., De Caprio V, dos Anjos R. de Cassia, de Gouveia Dal Pino E. M., De Lotto B., De Martino D., Wilhelmi E. de Ona, De Palma F., de Souza V, Delgado C., Delgado Giler A. G., della Volpe D., Depaoli D., Di Girolamo T., Di Pierro F., Di Venere L., Diebold S., Dmytriiev A., Dominguez A., Donini A., Doro M., Ebr J., Eckner C., Edwards T. D. P., Ekoume T. R. N., Elsaesser D., Evoli C., Falceta-Goncalves D., Fedorova E., Fegan S., Feng Q., Ferrand G., Ferrara G., Fiandrini E., Fiasson A., Filipovic M., Fioretti V, Fiori M., Foffano L., Fontaine G., Fornieri O., Franco F. J., Fukami S., Fukui Y., Gaggero D., Galaz G., Gammaldi V, Garcia E., Garczarczyk M., Gascon D., Gent A., Ghalumyan A., Gianotti F., Giarrusso M., Giavitto G., Giglietto N., Giordano F., Giuliani A., Glicenstein J., Gnatyk R., Goldoni P., Gonzalez M. M., Gourgouliatos K., Granot J., Grasso D., Green J., Grillo A., Gueta O., Gunji S., Halim A., Hassan T., Heller M., Hernandez Cadena S., Hiroshima N., Hnatyk B., Hofmann W., Holder J., Horan D., Horandel J., Horvath P., Hovatta T., Hrabovsky M., Hrupec D., Hughes G., Humensky T. B., Huetten M., Iarlori M., Inada T., Inoue S., Iocco F., Iori M., Jamrozy M., Janecek P., Jin W., Jouvin L., Jurysek J., Karukes E., Katarzynski K., Kazanas D., Kerszberg D., Kherlakian M. C., Kissmann R., Knodlseder J., Kobayashi Y., Kohri K., Komin N., Kubo H., Kushida J., Lamanna G., Lapington J., Laporte P., Leigui de Oliveira M. A., Lenain J., Leone F., Leto G., Lindfors E., Lohse T., Lombardi S., Longo F., Lopez A., Lopez M., Lopez-Coto R., Loporchio S., Luque-Escamilla P. L., Mach E., Maggio C., Maier G., Mallamaci M., Nunes de Almeida R. Malta, Mandat D., Manganaro M., Mangano S., Manico G., Marculewicz M., Mariotti M., Markoff S., Marquez P., Marti J., Martinez O., Martinez M., Martinez G., Martinez-Huerta H., Maurin G., Mazin D., Mbarubucyeye J. D., Miranda D. Medina, Meyer M., Miceli M., Miener T., Minev M., Miranda J. M., Mirzoyan R., Mizuno T., Mode B., Moderski R., Mohrmann L., Molina E., Montaruli T., Moralejo A., Morcuende-Parrilla D., Morselli A., Mukherjee R., Mundell C., Nagai A., Nakamori T., Nemmen R., Niemiec J., Nieto D., Nikolajuk M., Ninci D., Noda K., Nosek D., Nozaki S., Ohira Y., Ohishi M., Ohtani Y., Oka T., Okumura A., Ong R. A., Orienti M., Orito R., Orlandini M., Orlando S., Orlando E., Ostrowski M., Oya I, Pagano I, Pagliaro A., Palatiello M., Pantaleo F. R., Paredes J. M., Pareschi G., Parmiggiani N., Patricelli B., Pavletic L., Pe'er A., Pecimotika M., Perez-Romero J., Persic M., Petruk O., Pfrang K., Piano G., Piatteli P., Pietropaolo E., Pillera R., Pilszyk B., Pintore F., Pohl M., Poireau V, Prado R. R., Prandini E., Prast J., Principe G., Prokoph H., Prouza M., Przybilski H., Puhlhofer G., Pumo M. L., Queiroz F., Quirrenbach A., Raino S., Rando R., Razzaque S., Recchia S., Reimer O., Reisenegger A., Renier Y., Rhode W., Ribeiro D., Ribo M., Richtler T., Rico J., Rieger F., Rinchiuso L., Rizi V, Rodriguez J., Fernandez G. Rodriguez, Rodriguez Ramirez J. C., Rojas G., Romano P., Romeo G., Rosado J., Rowell G., Rudak B., Russo F., Sadeh I, Hatlen E. Saether, Safi-Harb S., Greus F. Salesa, Salina G., Sanchez D., Sanchez-Conde M., Sangiorgi P., Sano H., Santander M., Santos E. M., Santos-Lima R., Sanuy A., Sarkar S., Saturni F. G., Sawangwit U., Schussler F., Schwanke U., Sciacca E., Scuderi S., Seglar-Arroyo M., Sergijenko O., Servillat M., Seweryn K., Shalchi A., Sharma P., Shellard R. C., Siejkowski H., Silk J., Siqueira C., Sliusar V, Sokolenko A., Sol H., Spencer S., Stamerra A., Stanic S., Starling R., Stolarczyk T., Straumann U., Striskovic J., Suda Y., Suomijarvi T., Swierk P., Tavecchio F., Taylor L., Tejedor L. A., Teshima M., Testa V, Tibaldo L., Todero Peixoto C. J., Tokanai F., Tonev D., Tosti G., Tosti L., Tothill N., Truzzi S., Travnicek P., Vagelli V., Vallage B., Vallania P., van Eldik C., Vandenbroucke J., Varner G. S., Vassiliev V., Vazquez Acosta M., Vecchi M., Ventura S., Vercellone S., Vergani S., Verna G., Viana A., Vigorito C. F., Vink J., Vitale V., Vorobiov S., Vovk I, Vuillaume T., Wagner S. J., Walter R., Watson J., Weniger C., White R., White M., Wiemann R., Wierzcholska A., Will M., Williams D. A., Wischnewski R., Yanagita S., Yang L., Yoshikoshi T., Zacharias M., Zaharijas G., Zakaria A. A., Zampieri L., Zanin R., Zaric D., Zavrtanik M., Zavrtanik D., Zdziarski A. A., Zech A., Zechlin H., Zhdanov V. I, Zivec M.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 2021 巻 ( 1 ) 2021年1月

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掲載種別：研究論文（学術雑誌）出版者・発行元：Journal of Cosmology and Astroparticle Physics

DOI： 10.1088/1475-7516/2021/01/057

Web of Science

Scopus
Technical and scientific performance of the prototype Schwarzschild-Couder Telescope for CTA

Adams C.B., Ambrosi G., Ambrosio M., Aramo C., Batista P.I., Benbow W., Bertucci B., Bissaldi E., Bitossi M., Boiano A., Bonavolontà C., Bose R., Brill A., Brown A.M., Buckley J.H., Canestrari R., Capasso M., Caprai M., Covault C.E., Depaoli D., Di Venere L., Errando M., Fegan S., Feng Q., Fiandrini E., Furniss A., Gent A., Giglietto N., Giordano F., Giro E., Halliday R., Hervet O., Holder J., Humensky T.B., Incardona S., Ionica M., Jin W., Kieda D., Licciulli F., Loporchio S., Marsella G., Masone V., Meagher K., Meures T., Mode B.A.W., Mognet S.A.I., Mukherjee R., Nieto D., Okumura A., Otte N., Pantaleo F.R., Paoletti R., Pareschi G., Di Pierro F., Pueschel E., Ribeiro D., Riitano L., Roache E., Ross D., Rousselle J., Rugliancich A., Santander M., Shang R., Stiaccini L., Tajima H., Taylor L.P., Tosti L., Tovmassian G., Tripodo G., Vagelli V., Valentino M., Vandenbroucke J., Vassiliev V.V., Watson J.J., White R., Williams D.A., Yu P., Zink A.

Proceedings of SPIE - The International Society for Optical Engineering 11820 巻 2021年

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記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of SPIE - The International Society for Optical Engineering

The Cherenkov Telescope Array (CTA) is the next-generation ground-based observatory for very-high-energy gamma rays. One candidate design for CTA’s medium-sized telescopes consists of the Schwarzschild-Couder Telescope (SCT), featuring innovative dual-mirror optics. The SCT project has built and is currently operating a 9.7-m prototype SCT (pSCT) at the Fred Lawrence Whipple Observatory (FLWO); such optical design enables the use of a compact camera with state-of-the art silicon photomultiplier detectors. A partially-equipped camera has recently successfully detected the Crab Nebula with a statistical significance of 8.6 standard deviations. A funded upgrade of the pSCT focal plane sensors and electronics is currently ongoing, which will bring the total number of channels from 1600 to 11328 and the telescope field of view from about 2.7◦ to 8◦. In this work, we will describe the technical and scientific performance of the pSCT.

DOI： 10.1117/12.2594580

Scopus
Status of the development of NUV SiPMs for INFN optical modules for the SCT medium sized telescope proposed for the CTA observatory

Adams C., Ambrosi G., Ambrosio M., Aramo C., Benbow W., Bertucci B., Bissaldi E., Bitossi M., Boiano A., Bonavolonta C., Bose R., Brill A., Buckley J. H., Caprai M., Covault C. E., Di Venere L., Feng Q., Fiandrini E., Gent A., Giglietto N., Giordano F., Halliday R., Hervet O., Hughes G., Humensky T. B., Ionica M., Jin W., Kaaret P., Kieda D., Kim B., Licciulli F., Loporchio S., Masone V., Meures T., Mode B. A. W., Mukherjeek R., Okumura A., Otte N., Pantaleo F. R., Paoletti R., Petrashyk A., Powell J., Powell K., Riberio D., Rouselle J., Rugliancich A., Santander M., Shang R., Stevenson B., Stiaccini L., Taylor L. P., Tosti L., Vagelli V., Valentino M., Vandenbroucke J., Vassiliev V., Wilcox P., Williams D. A.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 982 巻 2020年12月

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掲載種別：研究論文（学術雑誌）出版者・発行元：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

DOI： 10.1016/j.nima.2020.164486

Web of Science

Scopus
Study of the Cosmic Rays and Interstellar Medium in Local HI Clouds Using Fermi-LAT Gamma-Ray Observations

Mizuno T., Abdollahi S., Fukui Y., Hayashi K., Koyama T., Okumura A., Tajima H., Yamamoto H.

ASTROPHYSICAL JOURNAL 890 巻 ( 2 ) 2020年2月

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掲載種別：研究論文（学術雑誌）出版者・発行元：Astrophysical Journal

DOI： 10.3847/1538-4357/ab6a99

Web of Science

Scopus
Front-end electronics of the Compact High Energy Camera

Leach S. A., Lapington J. S., Ross D., Thornhill J., Duffy C., Funk S., Zink A., Jankowsky D., White R., Zorn J., Tibaldo L., Varner G., Okumura A., Tajima H., Watson J.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 952 巻 2020年2月

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掲載種別：研究論文（学術雑誌）出版者・発行元：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

DOI： 10.1016/j.nima.2018.12.061

Web of Science

Scopus
Alignment of the optical system of the 9.7-m prototype Schwarzchild-Coulder Telescope

Adams C.

Proceedings of SPIE - The International Society for Optical Engineering 11445 巻 2020年

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掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of SPIE - The International Society for Optical Engineering

DOI： 10.1117/12.2564653

Scopus
Verification of the Optical System of the 9.7-m Prototype Schwarzschild-Couder Telescope

Adams C., Alfaro R., Ambrosi G., Ambrosio M., Aramo C., Benbow W., Bertucci B., Bissaldi E., Bitossi M., Boiano A., Bonavolonta C., Bose R., Brill A., Buckley J. H., Byrum K., Cameron R. A., Capasso M., Caprai M., Covault C. E., Di Venere L., Fegan S., Feng Q., Fiandrini E., Furniss A., Garczarczyk M., Garfias F., Gent A., Giglietto N., Giordano F., Gonzalez M. M., Halliday R., Hervet O., Hughes G., Humensky T. B., Ionica M., Iriarte A., Jin W., Kaarat P., Kieda D., Kim B., Licciulli F., Limon M., Loporchio S., Masone V, Meures T., Mode B. A. W., Mukherjee R., Nieto D., Okumura A., Otte N., La Palombara N., Pantaleo F. R., Paoletti R., Pareschi G., Petrashyk A., Powell J., Powell K., Ribeiro D., Roache E., Rousselle J., Rugliancich A., Ruiz-Diaz-Soto J., Santander M., Schlenstedt S., Scuderi S., Shang R., Sironi G., Stevenson B., Stiaccini L., Taylor L. P., Tosti L., Tovmassian G., Vagelli V., Valentino M., Vandenbroucke J., Vassiliev V. V., Wakely S. P., Wilcox P., Williams D. A., Yu P.

OPTICAL SYSTEM ALIGNMENT, TOLERANCING, AND VERIFICATION XIII 11488 巻 2020年

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掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of SPIE - The International Society for Optical Engineering

DOI： 10.1117/12.2568134

Web of Science

Scopus
Design and production of segment mirrors for the Large-Sized Telescopes of the Cherenkov Telescope Array

Inada T.

Proceedings of SPIE - The International Society for Optical Engineering 11451 巻 2020年

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掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of SPIE - The International Society for Optical Engineering

DOI： 10.1117/12.2562111

Scopus
Calibration and performance of the readout system based on switched capacitor arrays for the Large-Sized Telescope of the Cherenkov Telescope Array

Nozaki Seiya, Awai Kyosuke, Bamba Aya, Barrio Juan Abel, Bernardos Maria Isabel, Blanch Oscar, Boix Joan, Cassol Franca, Choushi Yuuki, Delgado Carlos, Diaz Carlos, Fouque Nadia, Freixas Lluis, Gliwny Pawel, Gunji Shuichi, Hadasch Daniela, Hoffmann Dirk, Houles Julien, Inome Yusuke, Iwamura Yuki, Jouvin Lea, Katagiri Hideaki, Kawamura Kiomei, Kerszberg Daniel, Konno Yusuke, Kubo Hidetoshi, Kushida Junko, Kobayashi Yukiho, Lopez Ruben, Martinez Gustavo, Masuda Shu, Mazin Daniel, Moralejo Abelardo, Moretti Elena, Nagayoshi Tsutomu, Nakamori Takeshi, Nishijima Kyoshi, Nogami Yuto, Nogues Leyre, Ohoka Hideyuki, Oka Tomohiko, Okazaki Nao, Okumura Akira, Orito Reiko, Panazol Jean-Luc, Paoletti Riccardo, Pio Cristobal, Polo Miguel, Prast Julie, Saito Takayuki, Sakurai Shunsuke, Sitarek Julian, Sunada Yuji, Suzuki Megumi, Takahashi Mitsunari, Tamura Kenji, Tanaka Manobu, Tejedor Luis Angel, Terada Yukikatsu, Teshima Masahiro, Tsukamoto Yusuke, Yamamoto Tokonatsu

GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY VIII 11447 巻頁： 114470H 2020年

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記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）

DOI： 10.1117/12.2560018

Web of Science
CTA 報告 161：CTA大口径望遠鏡初号機とMAGIC望遠鏡の相互較正

大谷恵生, 折戸玲子, 梶原侑貴, 片桐秀明, 櫛田淳子, 窪秀利, 郡司修一, 小林志鳳, 斎藤隆之, 榊直人, 櫻井駿介, 阿部日向, Zenin A., 高橋満里, 高橋光成, 立石大, 千川道幸, 町支勇貴, 手嶋政廣, 中森健之, 生天目康之, 西嶋恭司, 稲田知大, 野上優人, 野崎誠也, 野村亮介, 原田善規, 深見哲志, 藤原千賀己, 古田智也, 山本常夏, 吉越貴紀, 吉田龍生, 今川要, 他CTA-Japanコンソーシアム, 岩村由樹, 大石理子, 岡知彦, 緒方智之, 奥村曉

日本物理学会講演概要集 75 巻頁： 441 - 441 2020年

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記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.75.1.0_441
CTA報告162：CTA大口径望遠鏡初号機のカメラ較正

小林志鳳, 岡知彦, 岡崎奈緒, 緒方智之, 奥村曉, 折戸玲子, 梶原侑貴, 片桐秀明, 櫛田淳子, 窪秀利, 郡司修一, 阿部日向, 齋藤隆之, 榊直人, 櫻井駿介, 鈴木萌, 砂田裕志, Zenin A., 高橋満里, 高橋光成, 立石大, 田中真伸, 稲田知大, 田村謙治, 千川道幸, 町支勇貴, 手嶋政廣, 寺田幸功, 門叶冬樹, 中森健之, 生天目康之, 西嶋恭司, 野上優人, 猪目祐介, 野崎誠也, 野田浩司, 野村亮介, Hadasch D., 原田善規, 深見哲志, 藤原千賀己, 古田智也, Mazin D., 山本常夏, 今川要, 吉越貴紀, 吉田龍生, 他CTA-Japanコンソーシアム, 岩村由樹, 大石理子, 大岡秀行, 大谷恵生

日本物理学会講演概要集 75 巻頁： 471 - 471 2020年

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記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.75.1.0_471
CTA報告160：CTA大口径望遠鏡初号機のモノ解析現状

野崎誠也, 奥村曉, 折戸玲子, 梶原侑貴, 片桐秀明, 櫛田淳子, 窪秀利, 郡司修一, 小林志鳳, 斎藤隆之, 榊直人, 阿部日向, 櫻井駿介, Zenin A., 高橋満里, 高橋光成, 立石大, 千川道幸, 町支勇貴, 手嶋政廣, 中森健之, 生天目目康之, 稲田知大, 西嶋恭司, 野上優人, 野村亮介, 原田善規, 深見哲志, 藤原千賀己, 古田智也, 山本常夏, 吉越貴紀, 吉田龍生, 今川要, 他CTA-Japanコンソーシアム, 岩村由樹, 大石理子, 大谷恵生, 岡知彦, 緒方智之

日本物理学会講演概要集 75 巻頁： 440 - 440 2020年

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記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.75.1.0_440
CTA報告159：全体報告

窪秀利, 手嶋政廣, 戸谷友則, 浅野勝晃, 阿部日向, 粟井恭輔, 井岡邦仁, 石尾一馬, 石崎渉, 稲田知大, 井上進, 井上剛志, 井上芳幸, 猪目祐介, 今川要, 岩村由樹, 内山泰伸, 大石理子, 大岡秀行, 大谷恵生, 大平豊, 岡知彦, 岡崎奈緒, 緒方智之, 奥村曉, 小原光太郎, 折戸玲子, 加賀谷美佳, 梶原侑貴, 片岡淳, 片桐秀明, 勝倉大輔, 勝田哲, 川島翔太郎, 川中宣太, 川村孔明, 木坂将大, 櫛田淳子, 黒田裕介, 郡司修一, 郡和範, 小林志鳳, 齋藤隆之, 榊直人, 櫻井駿介, 佐野栄俊, 澤田真理, 柴田徹, 鈴木萌, 鈴木寛大, 須田祐介, 砂田裕志, 高田順平, 高橋満里, 高橋慶太郎, 高橋弘充, 高橋光成, 田島宏康, 立原研悟, 立石大, 田中周太, 田中孝明, 田中真伸, 田村謙治, 千川道幸, 町支勇貴, 塚本友祐, 辻本晋平, 鶴剛, 寺田幸功, 當真賢二, 門叶冬樹, 内藤統也, 長瀧重博, 中村裕樹, 中森健之, 中山和則, 生天目康之, 生天目西嶋恭司, 野上優人, 野崎誠也, 野田浩司, 野村亮介, 早川貴敬, 林航平, 林克洋, 林田将明, 原敏, 原田善規, 馬場彩, 廣島渚, 広谷幸一, 深沢泰司, 深見哲志, 福井康雄, 藤川由衣, 藤田裕, 藤原千賀己, 古田智也, 松本浩典, 水野恒史, 村石浩, 村瀬孔大, 森浩二, 柳田昭平, 山崎了, 山根悠望子, 山本常夏, 山本宏昭, 吉越貴紀, 吉田篤正, 吉田龍生, 李兆衡

日本物理学会講演概要集 75.1 巻頁： 439 - 439 2020年

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記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.75.1.0_439
Fermi-LAT gamma-Ray Study of the Interstellar Medium and Cosmic Rays in the Chamaeleon Molecular Cloud Complex: A Look at the Dark Gas as Optically Thick HI 査読有り

Hayashi Katsuhiro, Mizuno Tsunefumi, Fukui Yasuo, Okamoto Ryuji, Yamamoto Hiroaki, Hidaka Naoya, Okumura Akira, Tajima Hiroyasu, Sano Hidetoshi

ASTROPHYSICAL JOURNAL 884 巻 ( 2 ) 2019年10月

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掲載種別：研究論文（学術雑誌）出版者・発行元：Astrophysical Journal

We report a Fermi-LAT $\gamma$-ray analysis for the Chamaeleon 
molecular-cloud complex using a total column density (NH) model based on the 
dust optical depth at 353 GHz ($\tau_{353}$) with the Planck thermal dust 
emission model. Gamma rays with energy from 250 MeV to 100 GeV are fitted with 
the NH model as a function of $\tau_{353}$, NH $\propto$ 
$\tau_{353}^{1/\alpha}$ ($\alpha$ $\geq$ 1.0), to explicitly take into account 
a possible nonlinear $\tau_{353}$/NH ratio. We found that a nonlinear relation, 
$\alpha$$\sim$1.4, gives the best fit to the $\gamma$-ray data. This nonlinear 
relation may indicate dust evolution effects across the different gas phases. 
Using the best-fit NH model, we derived the CO-to-H2 conversion factor (XCO) 
and gas mass, taking into account uncertainties of the NH model. The value of 
XCO is found to be (0.63-0.76) $\times$10$^{20}$ cm$^{-2}$ K$^{-1}$ km$^{-1}$ 
s, which is consistent with that of a recent $\gamma$-ray study of the 
Chamaeleon region. The total gas mass is estimated to be (6.0-7.3) $\times$ 
10$^{4}$ Msun, of which the mass of additional gas not traced by standard HI or 
CO line surveys is 20-40%. The additional gas amounts to 30-60% of the gas mass 
estimated in the case of optically thin HI and has 5-7 times greater mass than 
the molecular gas traced by CO. Possible origins of the additional gas are 
discussed based on scenarios of optically thick HI and CO-dark H2. We also 
derived the $\gamma$-ray emissivity spectrum, which is consistent with the 
local HI emissivity derived from LAT data within the systematic uncertainty of 
$\sim$20%

DOI： 10.3847/1538-4357/ab4351

Web of Science

Scopus

arXiv
Monte Carlo studies for the optimisation of the Cherenkov Telescope Array layout

Acharyya A., Agudo I, Anguner E. O., Alfaro R., Alfaro J., Alispach C., Aloisio R., Alves Batista R., Amans J-P, Amati L., Amato E., Ambrosi G., Antonelli L. A., Aramo C., Armstrong T., Arqueros F., Arrabito L., Asano K., Ashkar H., Balazs C., Balbo M., Balmaverde B., Barai P., Barbano A., Barkov M., Barres de Almeida U., Barrio J. A., Bastieri D., Becerra Gonzalez J., Tjus J. Becker, Bellizzi L., Benbow W., Bernardini E., Bernardos M. I, Bernloehr K., Berti A., Berton M., Bertucci B., Beshley V, Biasuzzi B., Bigongiari C., Bird R., Bissaldi E., Biteau J., Blanch O., Blazek J., Boisson C., Bonanno G., Bonardi A., Bonavolonta C., Bonnoli G., Bordas P., Bottcher M., Bregeon J., Brill A., Brown A. M., Bruegge K., Brun P., Bruno P., Bulgarelli A., Bulik T., Burton M., Burtovoi A., Busetto G., Cameron R., Canestrari R., Capalbi M., Caproni A., Capuzzo-Dolcetta R., Caraveo P., Caroff S., Carosi R., Casanova S., Cascone E., Cassol F., Catalani F., Catalano O., Cauz D., Cerruti M., Chaty S., Chen A., Chernyakova M., Chiaro G., Cieslar M., Colak S. M., Conforti V, Congiu E., Contreras J. L., Cortina J., Costa A., Costantini H., Cotter G., Cristofari P., Cumani P., Cusumano G., D'Ai A., D'Ammando F., Dangeon L., Da Vela P., Dazzi F., De Angelis A., De Caprio V, de Cassia dos Anjos R., De Frondat F., de Gouveia Dal Pino E. M., De Lotto B., De Martino D., de Naurois M., Wilhelmi E. de Ona, de Palma F., de Souza V, Del Santo M., Delgado C., della Volpe D., Di Girolamo T., Di Pierro F., Di Venere L., Diaz C., Diebold S., Djannati-Atai A., Dmytriiev A., Prester D. Dominis, Donini A., Dorner D., Doro M., Dournaux J-L, Ebr J., Ekoume T. R. N., Elsaesser D., Emery G., Falceta-Goncalves D., Fedorova E., Fegan S., Feng Q., Ferrand G., Fiandrini E., Fiasson A., Filipovic M., Fioretti V, Fiori M., Flis S., Fonseca M. V, Fontaine G., Freixas Coromina L., Fukami S., Fukui Y., Funk S., Fuessling M., Gaggero D., Galanti G., Garcia Lopez R. J., Garczarczyk M., Gascon D., Gasparetto T., Gaug M., Ghalumyan A., Gianotti F., Giavitto G., Giglietto N., Giordano F., Giroletti M., Gironnet J., Glicenstein J-F, Gnatyk R., Goldoni P., Gonzalez J. M., Gonzalez M. M., Gourgouliatos K. N., Grabarczyk T., Granot J., Green D., Greenshaw T., Grondin M-H, Gueta O., Hadasch D., Hassan T., Hayashida M., Heller M., Hervet O., Hinton J., Hiroshima N., Hnatyk B., Hofmann W., Horvath P., Hrabovsky M., Hrupec D., Humensky T. B., Huetten M., Inada T., Iocco F., Ionica M., Iori M., Iwamura Y., Jamrozy M., Janecek P., Jankowsky D., Jean P., Jouvin L., Jurysek J., Kaaret P., Kadowaki L. H. S., Karkar S., Kerszberg D., Khelifi B., Kieda D., Kimeswenger S., Kluzniak W., Knapp J., Knodlseder J., Kobayashi Y., Koch B., Kocot J., Komin N., Kong A., Kowal G., Krause M., Kubo H., Kushida J., Kushwaha P., La Parola V, La Rosa G., Lallena Arquillo M., Lang R. G., Lapington J., Le Blanc O., Lefaucheur J., Leigui de Oliveira M. A., Lemoine-Goumard M., Lenain J-P, Leto G., Lico R., Lindfors E., Lohse T., Lombardi S., Longo F., Lopez A., Lopez M., Lopez-Oramas A., Lopez-Coto R., Loporchio S., Luque-Escamilla P. L., Lyard E., Maccarone M. C., Mach E., Maggio C., Majumdar P., Malaguti G., Mallamaci M., Mandat D., Maneva G., Manganaro M., Mangano S., Marculewicz M., Mariotti M., Marti J., Martinez M., Martinez G., Martinez-Huerta H., Masuda S., Maxted N., Mazin D., Meunier J-L, Meyer M., Micanovic S., Millul R., Minaya I. A., Mitchell A., Mizuno T., Moderski R., Mohrmann L., Montaruli T., Moralejo A., Morcuende D., Morlino G., Morselli A., Moulin E., Mukherjee R., Munar P., Mundell C., Murach T., Nagai A., Nagayoshi T., Naito T., Nakamori T., Nemmen R., Niemiec J., Nieto D., Rosillo M. Nievas, Nikolajuk M., Ninci D., Nishijima K., Noda K., Nosek D., Noethe M., Nozaki S., Ohishi M., Ohtani Y., Okumura A., Ong R. A., Orienti M., Orito R., Ostrowski M., Otte N., Ou Z., Oya I, Pagliaro A., Palatiello M., Palatka M., Paoletti R., Paredes J. M., Pareschi G., Parmiggiani N., Parsons R. D., Patricelli B., Pe'er A., Pech M., Penil Del Campo P., Perez-Romero J., Perri M., Persic M., Petrucci P-O, Petruk O., Pfrang K., Piel Q., Pietropaolo E., Pohl M., Polo M., Poutanen J., Prandini E., Produit N., Prokoph H., Prouza M., Przybilski H., Puehlhofer G., Punch M., Queiroz F., Quirrenbach A., Raino S., Rando R., Razzaque S., Reimer O., Renault-Tinacci N., Renier Y., Ribeiro D., Ribo M., Rico J., Rieger F., Rizi V, Fernandez G. Rodriguez, Rodriguez-Ramirez J. C., Rodri-guez Vazquez J. J., Romano P., Romeo G., Roncadelli M., Rosado J., Rowell G., Rudak B., Rugliancich A., Rulten C., Sadeh I, Saha L., Saito T., Sakurai S., Greus F. Salesa, Sangiorgi P., Sano H., Santander M., Santangelo A., Santos-Lima R., Sanuy A., Satalecka K., Saturni F. G., Sawangwit U., Schlenstedt S., Schovanek P., Schussler F., Schwanke U., Sciacca E., Scuderi S., Sedlaczek K., Seglar-Arroyo M., Sergijenko O., Seweryn K., Shalchi A., Shellard R. C., Siejkowski H., Sillanpaa A., Sinha A., Sironi G., Sliusar V, Slowikowska A., Sol H., Specovius A., Spencer S., Spengler G., Stamerra A., Stanic S., Stawarz L., Stefanik S., Stolarczyk T., Straumann U., Suomijarvi T., Swierk P., Szepieniec T., Tagliaferri G., Tajima H., Tam T., Tavecchio F., Taylor L., Tejedor L. A., Temnikov P., Terzic T., Testa V, Tibaldo L., Todero Peixoto C. J., Tokanai F., Tomankova L., Tonev D., Torres D. F., Tosti G., Tosti L., Tothill N., Toussenel F., Tovmassian G., Travnicek P., Trichard C., Umana G., Vagelli V., Valentino M., Vallage B., Vallania P., Valore L., Vandenbroucke J., Varner G. S., Vasileiadis G., Vassiliev V., Vazquez Acosta M., Vecchi M., Vercellone S., Vergani S., Vettolani G. P., Viana A., Vigorito C. F., Vink J., Vitale V., Voelk H., Vollhardt A., Vorobiov S., Wagner S. J., Walter R., Werner F., White R., Wierzcholska A., Will M., Williams D. A., Wischnewski R., Yang L., Yoshida T., Yoshikoshi T., Zacharias M., Zampieri L., Zavrtanik M., Zavrtanik D., Zdziarski A. A., Zech A., Zechlin H., Zenin A., Zhdanov V. I, Zimmer S., Zorn J.

ASTROPARTICLE PHYSICS 111 巻頁： 35 - 53 2019年9月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Astroparticle Physics

DOI： 10.1016/j.astropartphys.2019.04.001

Web of Science

Scopus
Using Muon Rings for the Calibration of the Cherenkov Telescope Array: A Systematic Review of the Method and Its Potential Accuracy

Gaug M., Fegan S., Mitchell A. M. W., Maccarone M. C., Mineo T., Okumura A.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 243 巻 ( 1 ) 2019年7月

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掲載種別：研究論文（学術雑誌）出版者・発行元：Astrophysical Journal, Supplement Series

DOI： 10.3847/1538-4365/ab2123

Web of Science

Scopus
Using muon rings for the optical throughput calibration of the Cherenkov Telescope array

Gaug M.

Proceedings of Science 358 巻 2019年

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掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

Scopus
Upgrading the prototype Schwarzschild-Couder telescope camera to a wide-field, high-resolution instrument

Adams C.

Proceedings of Science 358 巻 2019年

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掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

Scopus
The calibration of the first large-sized telescope of the Cherenkov telescope array

Sakurai S.

Proceedings of Science 358 巻 2019年

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掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

Scopus
Prototype schwarzschild-couder telescope for the cherenkov telescope array: Commissioning status of the optical system

Adams C.

Proceedings of Science 358 巻 2019年

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掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

Scopus
Introduction to CTA Science

Acharya B. S., Agudo I., Al Samarai I., Alfaro R., Alfaro J., Alispach C., Batista R. Alves, Amans J. -P., Amato E., Ambrosi G., Antolini E., Antonelli L. A., Aramo C., Araya M., Armstrong T., Arqueros F., Arrabito L., Asano K., Ashley M., Backes M., Balazs C., Balbo M., Ballester O., Ballet J., Bamba A., Barkov M., Barres de Almeida U., Barrio J. A., Bastieri D., Becherini Y., Belfiore A., Benbow W., Berge D., Bernardini E., Bernardini M. G., Bernardos M., Bernloehr K., Bertucci B., Biasuzzi B., Bigongiari C., Biland A., Bissaldi E., Biteau J., Blanch O., Blazek J., Boisson C., Bolmont J., Bonanno G., Bonardi A., Bonavolonta C., Bonnoli G., Bosnjak Z., Bottcher M., Braiding C., Bregeon J., Brill A., Brown A. M., Brun P., Brunetti G., Buanes T., Buckley J., Bugaev V., Buehler R., Bulgarelli A., Bulik T., Burton M., Burtovoi A., Busetto G., Canestrari R., Capalbi M., Capitanio F., Caproni A., Caraveo P., Cardenas V., Carlile C., Carosi R., Carquin E., Carr J., Casanova S., Cascone E., Catalani F., Catalano O., Cauz D., Cerruti M., Chadwick P., Chaty S., Chaves R. C. G., Chen A., Chen X., Chernyakova M., Chikawa M., Christov A., Chudoba J., Cieslar M., Coco V., Colafrancesco S., Colin P., Conforti V., Connaughton V., Conrad J., Contreras J. L., Cortina J., Costa A., Costantini H., Cotter G., Covino S., Crocker R., Cuadra J., Cuevas O., Cumani P., D'Ai A., D'Ammando F., D'Avanzo P., D'Urso D., Daniel M., Davids I., Dawson B., Dazzi F., De Angelis A., de Cassia dos Anjos R., De Cesare G., De Franco A., De Gouveia Dal Pino E. M., de la Calle I., Lopez R. de los Reyes, De Lotto B., De Luca A., De Lucia M., de Naurois M., de Ona Wilhelmi E., De Palma F., De Persio F., de Souza V., Deil C., Del Santo M., Delgado C., della Volpe D., Di Girolamo T., Di Pierro F., Di Venere L., Diaz C., Dib C., Diebold S., Djannati-Atai A., Dominguez A., Prester D. Dominis, Dorner D., Doro M., Drass H., Dravins D., Dubus G., Dwarkadas V. V., Ebr J., Eckner C., Egberts K., Einecke S., Ekoume T. R. N., Elsaesser D., Ernenwein J. -P., Espinoza C., Evoli C., Fairbairn M., Falceta-Goncalves D., Falcone A., Farnier C., Fasola G., Fedorova E., Fegan S., Fernandez-Alonso M., Fernandez-Barral A., Ferrand G., Fesquet M., Filipovic M., Fioretti V., Fontaine G., Fornasa M., Fortson L., Freixas Coromina L., Fruck C., Fujita Y., Fukazawa Y., Funk S., Fuessling M., Gabici S., Gadola A., Gallant Y., Garcia B., Garcia Lopez R., Garczarczyk M., Gaskins J., Gasparetto T., Gaug M., Gerard L., Giavitto G., Giglietto N., Giommi P., Giordano F., Giro E., Giroletti M., Giuliani A., Glicenstein J. -F., Gnatyk R., Godinovic N., Goldoni P., Gomez-Vargas G., Gonzalez M. M., Gonzalez J. M., Gotz D., Graham J., Grandi P., Granot J., Green A. J., Greenshaw T., Griffiths S., Gunji S., Hadasch D., Hara S., Hardcastle M. J., Hassan T., Hayashi K., Hayashida M., Heller M., Helo J. C., Hermann G., Hinton J., Hnatyk B., Hofmann W., Holder J., Horan D., Horandel J., Horns D., Horvath P., Hovatta T., Hrabovsky M., Hrupec D., Humensky T. B., Huetten M., Iarlori M., Inada T., Inome Y., Inoue S., Inoue T., Inoue Y., Iocco F., Ioka K., Iori M., Ishio K., Iwamura Y., Jamrozy M., Janecek P., Jankowsky D., Jean P., Jung-Richardt I., Jurysek J., Kaaret P., Karkar S., Katagiri H., Katz U., Kawanaka N., Kazanas D., Khelifi B., Kieda D. B., Kimeswenger S., Kimura S., Kisaka S., Knapp J., Knodlseder J., Koch B., Kohri K., Komin N., Kosack K., Kraus M., Krause M., Krauss F., Kubo H., Mezek G. Kukec, Kuroda H., Kushida J., La Palombara N., Lamanna G., Lang R. G., Lapington J., Le Blanc O., Leach S., Lees J. -P., Lefaucheur J., Leigui de Oliveira M. A., Lenain J. -P., Lico R., Limon M., Lindfors E., Lohse T., Lombardi S., Longo F., Lopez M., Lopez-Coto R., Lu C. -C., Lucarelli F., Luque-Escamilla P. L., Lyard E., Maccarone M. C., Maier G., Majumdar P., Malaguti G., Mandat D., Maneva G., Manganaro M., Mangano S., Marcowith A., Marin J., Markoff S., Marti J., Martin P., Martinez M., Martinez G., Masetti N., Masuda S., Maurin G., Maxted N., Mazin D., Medina C., Melandri A., Mereghetti S., Meyer M., Minaya I. A., Mirabal N., Mirzoyan R., Mitchell A., Mizuno T., Moderski R., Mohammed M., Mohrmann L., Montaruli T., Moralejo A., Morcuende-Parrilla D., Mori K., Morlino G., Morris P., Morselli A., Moulin E., Mukherjee R., Mundell C., Murach T., Muraishi H., Murase K., Nagai A., Nagataki S., Nagayoshi T., Naito T., Nakamori T., Nakamura Y., Niemiec J., Nieto D., Nikolajuk M., Nishijima K., Noda K., Nosek D., Novosyadlyj B., Nozaki S., O'Brien P., Oakes L., Ohira Y., Ohishi M., Ohm S., Okazaki N., Okumura A., Ong R. A., Orienti M., Orito R., Osborne J. P., Ostrowski M., Otte N., Oya I., Padovani M., Paizis A., Palatiello M., Palatka M., Paoletti R., Paredes J. M., Pareschi G., Parsons R. D., Pe'er A., Pech M., Pedaletti G., Perri M., Persic M., Petrashyk A., Petrucci P., Petruk O., Peyaud B., Pfeifer M., Piano G., Pisarski A., Pita S., Pohl M., Polo M., Pozo D., Prandini E., Prast J., Principe G., Prokhorov D., Prokoph H., Prouza M., Puehlhofer G., Punch M., Puerckhauer S., Queiroz F., Quirrenbach A., Raino S., Razzaque S., Reimer O., Reimer A., Reisenegger A., Renaud M., Rezaeian A. H., Rhode W., Ribeiro D., Ribo M., Richtler T., Rico J., Rieger F., Riquelme M., Rivoire S., Rizi V., Rodriguez J., Fernandez G. Rodriguez, Rodriguez Vazquez J. J., Rojas G., Romano P., Romeo G., Rosado J., Rovero A. C., Rowell G., Rudak B., Rugliancich A., Rulten C., Sadeh I., Safi-Harb S., Saito T., Sakaki N., Sakurai S., Salina G., Sanchez-Conde M., Sandaker H., Sandoval A., Sangiorgi P., Sanguillon M., Sano H., Santander M., Sarkar S., Satalecka K., Saturni F. G., Schioppa E. J., Schlenstedt S., Schneider M., Schoorlemmer H., Schovanek P., Schulz A., Schussler F., Schwanke U., Sciacca E., Scuderi S., Seitenzahl I., Semikoz D., Sergijenko O., Servillat M., Shalchi A., Shellard R. C., Sidoli L., Siejkowski H., Sillanpaa A., Sironi G., Sitarek J., Sliusar V., Slowikowska A., Sol H., Stamerra A., Stanic S., Starling R., Stawarz L., Stefanik S., Stephan M., Stolarczyk T., Stratta G., Straumann U., Suomijarvi T., Supanitsky A. D., Tagliaferri G., Tajima H., Tavani M., Tavecchio F., Tavernet J. -P., Tayabaly K., Tejedor L. A., Temnikov P., Terada Y., Terrier R., Terzic T., Teshima M., Testa V., Thoudam S., Tian W., Tibaldo L., Tluczykont M., Todero Peixoto C. J., Tokanai F., Tomastik J., Tonev D., Tornikoski M., Torres D. F., Torresi E., Tosti G., Tothill N., Tovmassian G., Travnicek P., Trichard C., Trifoglio M., Pujadas I. Troyano, Tsujimoto S., Umana G., Vagelli V., Vagnetti F., Valentino M., Vallania P., Valore L., van Eldik C., Vandenbroucke J., Varner G. S., Vasileiadis G., Vassiliev V., Vazquez Acosta M., Vecchi M., Vega A., Vercellone S., Veres P., Vergani S., Verzi V., Vettolani G. P., Viana A., Vigorito C., Villanueva J., Voelk H., Vollhardt A., Vorobiov S., Vrastil M., Vuillaume T., Wagner S. J., Wagner R., Walter R., Ward J. E., Warren D., Watson J. J., Werner F., White M., White R., Wierzcholska A., Wilcox P., Will M., Williams D. A., Wischnewski R., Wood M., Yamamoto T., Yamazaki R., Yanagita S., Yang L., Yoshida T., Yoshiike S., Yoshikoshi T., Zacharias M., Zaharijas G., Zampieri L., Zandanel F., Zanin R., Zavrtanik M., Zavrtanik D., Zdziarski A. A., Zech A., Zechlin H., Zhdanov V. I., Ziegler A., Zorn J.

SCIENCE WITH THE CHERENKOV TELESCOPE ARRAY 頁： 1 - + 2019年

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掲載種別：研究論文（学術雑誌）

Web of Science
Development and operations of INFN optical modules for the SCT telescope camera proposed for the Cherenkov Telescope Array Observatory

Adams C.

Proceedings of Science 358 巻 2019年

　詳細を見る

掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

Scopus
Characterization and assembly of near-ultraviolet SiPMs for the Schwarzschild-Couder medium-size telescope proposed for the CTA Observatory

Adams C., Ambrosi G., Ambrosio M., Aramo C., Benbow W., Bertucci B., Bissaldi E., Bitossi M., Boiano A., Bonavolonta C., Bose R., Brill A., Buckley J. H., Caprai M., Covault C. E., Di Venere L., Feng Q., Fiandrini E., Gent A., Giglietto N., Giordano F., Halliday R., Hervet O., Hughes G., Humensky T. B., Ionica M., Jin W., Kaaret P., Kieda D., Kim B., Licciulli F., Loporchio S., Masone V., Meures T., Mode B. A. W., Mukherjee R., Okumura A., Otte N., Pantaleo F. R., Paoletti R., Petrashyk A., Powell J., Powell K., Ribeiro D., Rousselle J., Rugliancich A., Santander M., Shang R., Stevenson B., Stiaccini L., Taylor L. P., Tosti L., Vagelli V., Valentino M., Vandenbroucke J., Vassiliev V., Wilcox P., Williams D. A.

HARD X-RAY, GAMMA-RAY, AND NEUTRON DETECTOR PHYSICS XXI 11114 巻 2019年

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掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of SPIE - The International Society for Optical Engineering

DOI： 10.1117/12.2530617

Web of Science

Scopus
Camera design and performance of the prototype schwarzschild-couder telescope for the Cherenkov Telescope Array

Adams C.

Proceedings of Science 358 巻 2019年

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掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of Science

Scopus
CTA報告156：CTAのガンマ線感度推定におけるハドロン相互作用モデルの不定性の影響の評価

大石理子, 吉越貴紀, 岩村由樹, 大谷恵生, 緒方智之, 奥村曉, 折戸玲子, 片桐秀明, 櫛田淳子, 郡司修一, 小林志鳳, 斎藤隆之, 榊直人, 櫻井駿介, 千川道幸, 中森健之, 西嶋恭司, 三浦智佳, 野崎誠也, 深見哲志, 藤原千賀己, 古田智也, 吉田龍生, 他 CTA-Japan Consortium

日本物理学会講演概要集 74.2 巻 ( 0 ) 頁： 359 - 359 2019年

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記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.74.2.0_359

CiNii Research
CTA 報告148：CTA大口径望遠鏡の大気ミューオン事象シミュレーション解析

李健, 郡司修一, 齋藤隆之, 榊直人, 佐々井義矩, 高橋知也, 種田裕貴, 中森健之, 西嶋恭司, 三浦智佳, 吉越貴紀, 藤原千賀己, 吉田龍生, Zenin Anatolii, 他CTA-Japan Consortium, 千川道幸, 大石理子, 奥村曉, 折戸玲子, 片桐秀明, 神本匠, 櫛田淳子

日本物理学会講演概要集 74 巻頁： 557 - 557 2019年

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記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.74.1.0_557
CTA報告157：CTA大口径望遠鏡に用いる光電子増倍管の時間応答性能の測定

砂田裕志, 片桐秀明, 櫛田淳子, 窪秀利, 郡司修一, 小林志鳳, 齋藤隆之, 櫻井駿介, 鈴木萌, 高橋光成, 田中真伸, 猪目祐介, 田村謙治, 町支勇貴, 手嶋政廣, 寺田幸功, 門叶冬樹, 中森健之, 永吉勤, 西嶋恭司, 野上優人, 野崎誠也, 岩村由樹, 野田浩司, Hadasch Daniela, 林田将明, 馬場彩, 平子丈, 古田智也, Mazin Daniel, 増田周, 山本常夏, 吉田龍生, 大岡秀行, 池野正弘, 内田智久, 岡知彦, 岡崎奈緒, 奥村曉, 折戸玲子, 梶原侑貴

日本物理学会講演概要集 74 巻頁： 360 - 360 2019年

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記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.74.2.0_360
CTA 報告150：CTA大口径望遠鏡初号機の焦点面カメラ試運転試験

野崎誠也, 梶原侑貴, 片桐秀明, 櫛田淳子, 木村颯一朗, 窪秀利, 郡司修一, 小山志勇, 齋藤隆之, 櫻井駿介, 澤田真理, 稲田知大, 鈴木萌, 砂田裕志, 高橋光成, 高原大, 田中真伸, 田村謙治, 町支勇貴, 辻本晋平, 手嶋政廣, 寺田幸功, 猪目祐介, 門叶冬樹, 中森健之, 永吉勤, 西嶋恭司, 西山楽, 野田浩司, 林田将明, 馬場彩, 平子丈, 深見哲志, 岩村由樹, 古田智也, 増田周, 山本常夏, 吉田龍生, Hadasch Daniela, Mazin Daniel, 他CTA-Japan consortium, 池野正弘, 内田智久, 大岡秀行, 岡崎奈緒, 岡知彦, 奥村曉, 折戸玲子

日本物理学会講演概要集 74 巻頁： 559 - 559 2019年

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記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.74.1.0_559
CTA 報告149：CTA大口径望遠鏡初号機のための解析ソフトウェア開発

岩村由樹, 窪秀利, 郡司修一, 小林志鳳, 齋藤隆之, 榊直人, 櫻井駿介, 佐々井義矩, 砂田裕志, 高橋知也, 種田裕貴, 稲田知大, 千川道幸, 町支勇貴, 手嶋政廣, 寺田幸功, 中森健之, 西嶋恭司, 野崎誠也, 野田浩司, 林田将明, 廣島渚, 大石理子, 深見哲志, 藤原千賀己, 三浦智佳, 山本常夏, 吉越貴紀, 吉田龍生, 李健, Zenin Anatolii, 他 CTA-Japan コンソーシアム, 大谷恵生, 奥村曉, 折戸玲子, 片桐秀明, 神本匠, 櫛田淳子

日本物理学会講演概要集 74 巻頁： 558 - 558 2019年

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記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.74.1.0_558
Evaluation of silicon photomultipliers for dual-mirror Small-Sized Telescopes of Cherenkov Telescope Array

Asano A., Berge D., Bonanno G., Bryan M., Gebhardt B., Grillo A., Hidaka N., Kachru P., Lapington J., Leach S., Nakamura Y., Okumura A., Romeo G., Ross D., Stephan M., Tajima H., Timpanaro M. C., White R., Yamane N., Zink A.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 912 巻頁： 177 - 181 2018年12月

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

DOI： 10.1016/j.nima.2017.11.017

Web of Science

Scopus
Characterisation and testing of CHEC-M-A camera prototype for the small-sized telescopes of the Cherenkov telescope array

Zorn J., White R., Watson J. J., Armstrong T. P., Balzer A., Barcelo M., Berge D., Bose R., Brown A. M., Bryan M., Chadwick P. M., Clark P., Costantini H., Cotter G., Dangeon L., Daniel M., De Franco A., Deiml P., Fasola G., Funk S., Gebyehu M., Gironnet J., Graham J. A., Greenshaw T., Hinton J. A., Kraus M., Lapington J. S., Laporte P., Leach S. A., Le Blanc O., Malouf A., Molyneux P., Moore P., Prokoph H., Okumura A., Ross D., Rowell G., Sapozhnikov L., Schoorlemmer H., Sol H., Stephan M., Tajima H., Tibaldo L., Varner G., Zink A.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 904 巻頁： 44-63 2018年10月

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記述言語：英語掲載種別：研究論文（学術雑誌）

DOI： 10.1016/j.nima.2018.06.078

Web of Science
Final characterisation and design of the Gamma-ray Cherenkov Telescope (GCT) for the Cherenkov Telescope Array

Le Blanc O., Fasola G., Huet J. M., White R., Dmytriiev A., Sol H., Zech A., Abchiche A., Amans J. P., Armstrong T. P., Barcelo M., Berge D., Brown A. M., Buchholtz G., Chadwick P. M., Clark P., Cotter G., Dangeon L., De Frondat F., Deiml P., Dournaux J. L., Duffy C., Einecke S., Flis S., Funk S., Giavitto G., Gironnet J., Graham J. A., Greenshaw T., Hinton J. A., Jegouzo I., Kraus M., Lapington J. S., Laporte P., Leach S. A., Lloyd S., Minaya I. A., Morier R., Okumura A., Prokoph H., Ross D., Rowell G., Rulten C. B., Schoorlemmer H., Schmoll J., Spencer S. T., Stephan M., Stuik R., Tajima H., Thornhill J., Tibaldo L., Vink J., Watson J. J., Williams J., Zink A., Zorn J.

GROUND-BASED AND AIRBORNE TELESCOPES VII 10700 巻 2018年

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Proceedings of SPIE - The International Society for Optical Engineering

DOI： 10.1117/12.2313158

Web of Science

Scopus
CTA報告130：全体報告

手嶋政廣, 井上剛志, 藤田裕, He Haoning, Majumdar Pratik, Mazin Daniel, 増田周, 松本浩典, 三浦智佳, 水野恒史, 村石浩, 村瀬孔大, 井上芳幸, 森浩二, 柳田昭平, 山崎了, 山本常夏, 山本宏昭, 吉池智史, 吉越貴紀, 吉田篤正, 吉田龍生, 李健, 猪目祐介, 李兆衡, Consortium for, the CTA-Japan, 岩村由樹, Warren Donald, 内山泰伸, 大石理子, 大岡秀行, 大平豊, 岡崎奈緒, 窪秀利, 奥村曉, 折戸玲子, 加賀谷美佳, 格和純, 片岡淳, 片桐秀明, 勝倉大輔, 勝田哲, 加藤翔, 神本匠, 戸谷友則, 川中宣太, 木坂将大, 木村颯一朗, Cui Xiaohong, 櫛田淳子, 久門拓, 黒田隼人, 郡司修一, 郡和範, 小山志勇, 浅野勝晃, Kong Albert K. H, 齋藤隆之, 榊直人, 櫻井駿介, 佐々井義矩, 佐野栄俊, 澤田真理

日本物理学会講演概要集 73 巻 ( 0 ) 頁： 412-412 - 412 2018年

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.73.1.0_412
CTA報告139：全体報告

窪秀利, 井上剛志, 深見哲志, 福井康雄, 藤田裕, 藤原千賀己, He Haoning, Majumdar Pratik, Mazin Daniel, 増田周, 松本浩典, 三浦智佳, 井上芳幸, 水野恒史, 村石浩, 村瀬孔大, 森浩二, 柳田昭平, 山崎了, 山本常夏, 山本宏昭, 吉池智史, 吉越貴紀, 猪目祐介, 吉田篤正, 吉田龍生, 李健, 李兆衡, 岩村由樹, Warren Donald, 内山泰伸, 大石理子, 大岡秀行, 大平豊, 岡崎奈緒, 手嶋政廣, 奥村曉, 折戸玲子, 加賀谷美佳, 格和純, 片岡淳, 片桐秀明, 勝倉大輔, 勝田哲, 加藤翔, 神本匠, 戸谷友則, 川中宣太, 木坂将大, 木村颯一朗, Cui Xiaohong, 櫛田淳子, 久門拓, 黒田隼人, 郡司修一, 郡和範, 小山志勇, 朝野彰, Kong Albert K. H., 齋藤隆之, 榊直人, 櫻井駿介, 佐々井義矩, 佐野栄俊, 澤田真理, 柴田徹, Dzhatdoev Timur, 鈴木萌, 浅野勝晃, 砂田裕志, 関崎晴仁, Zenin Anatolii, 高田順平, 高橋慶太郎, 高橋知也, 高橋弘充, 高橋光成, 髙原大, 田島宏康, 井岡邦仁, 立原研悟, 田中周太, 田中孝明, 田中真伸, 田中康之, 種田裕貴, Tam Thomas P. H., Cheng K. S., 千川道幸, 辻本晋平, 石尾一馬, 鶴剛, Tian Wenwu, 寺田幸功, 當真賢二, 門叶冬樹, 内藤統也, 中嶋大輔, 長瀧重博, 中村裕樹, 中森健之, 稲田知大, 中山和則, 永吉勤, 西嶋恭司, 西山楽, 野崎誠也, 野田浩司, Barkov Maxim, Hadasch Daniela, 早川貴敬, 林克洋, 井上進, 林田将明, 原敏, 馬場彩, 日高直哉, 平子丈, 廣島渚, 広谷幸一, Hui David C. Y., Ferrand Gilles, 深沢泰司

日本物理学会講演概要集 73 巻 ( 0 ) 頁： 188 - 188 2018年

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掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.73.2.0_188
CTA 報告 140：モンテカルロシミュレーションを用いたCTAでのgamma-ray like 陽子事象の空気シャワー特性とハドロン相互作用モデル依存性の調査

大石理子, 佐々井義矩, 高橋知也, 種田裕貴, 千川道幸, 中森健之, 西嶋恭司, 藤原千賀己, 三浦智佳, 吉越貴紀, 吉田龍生, 奥村曉, 李健, Zenin Anatolii, 他 CTA-Japan コンソーシアム, 折戸玲子, 片桐秀明, 神本匠, 櫛田淳子, 郡司修一, 齋藤隆之, 榊直人

日本物理学会講演概要集 73 巻頁： 189 - 189 2018年

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記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.73.2.0_189
CTA報告135：CTA 小口径望遠鏡のトリガー性能の最適化

佐々井義矩, 榊直人, 高橋知也, 種田裕貴, 千川道幸, 中森健之, 西嶋恭司, 三浦智佳, 吉越貴紀, 吉田龍生, 李健, 大石理子, 他 CTA-Japan コンソーシアム, 奥村曉, 折戸玲子, 片桐秀明, 神本匠, 櫛田淳子, 郡司修一, 斎藤隆之

日本物理学会講演概要集 73 巻頁： 418 - 418 2018年

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記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.73.1.0_418
CTA報告132：CTAのTeV領域電子・陽電子スペクトル測定性能のシミュレーション評価(III)

大石理子, 佐々井義矩, 高橋知也, 種田裕貴, 千川道幸, 中森健之, 西嶋恭司, 三浦智佳, 吉越貴紀, 吉田龍生, 李健, 奥村曉, 他 CTA-Japan コンソーシアム, 折戸玲子, 片桐秀明, 神本匠, 櫛田淳子, 郡司修一, 斎藤隆之, 榊直人

日本物理学会講演概要集 73 巻頁： 487 - 487 2018年

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記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.73.1.0_487
CTA報告131：CTA 大口径望遠鏡のモンテカルロシミュレーションによる月光下での性能評価

三浦智佳, 榊直人, 佐々井義矩, 高橋知也, 種田裕貴, 千川道幸, 中森健之, 西嶋恭司, 吉越貴紀, 吉田龍生, 李健, 大石理子, 他 CTA-Japan Consortium, 奥村曉, 折戸玲子, 片桐秀明, 神本匠, 櫛田淳子, 郡司修一, 齋藤隆之

日本物理学会講演概要集 73 巻頁： 413 - 413 2018年

　詳細を見る

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.73.1.0_413
CTA報告 143：CTA 小口径望遠鏡の月光下における検出感度の評価

佐々井義矩, 榊直人, 高橋知也, 田島宏康, 種田裕貴, 千川道幸, 中村裕樹, 中森健之, 西嶋恭司, 藤原千賀己, 三浦智佳, 大石理子, 吉越貴紀, 吉田龍生, 李健, Zenin Anatolii, 他 CTA-Japan コンソーシアム, 奥村曉, 折戸玲子, 片桐秀明, 神本匠, 櫛田淳子, 郡司修一, 齋藤隆之

日本物理学会講演概要集 73 巻頁： 192 - 192 2018年

　詳細を見る

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.73.2.0_192
CTA 報告 141：CTA 大口径望遠鏡のモンテカルロシミュレーションによる月光下での性能評価(II)

三浦智佳, 榊直人, 佐々井義矩, 高橋知也, 種田裕貴, 千川道幸, 中森健之, 西嶋恭司, 藤原千賀己, 吉越貴紀, 吉田龍生, 大石理子, 李健, Zenin Anatolii, 他 CTA-Japan Consortium, 奥村曉, 折戸玲子, 片桐秀明, 神本匠, 櫛田淳子, 郡司修一, 齋藤隆之

日本物理学会講演概要集 73 巻頁： 190 - 190 2018年

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記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.73.2.0_190
The GCT camera for the Cherenkov Telescope Array

Lapington J. S., Abchiche A., Allan D., Amans J. -P., Armstrong T. P., Balzer A., Berge D., Boisson C., Bousquet J. -J., Bose R., Brown A. M., Bryan M., Buchholtz G., Buckley J., Chadwick P. M., Costantini H., Cotter G., Daniel M. K., De Franco A., De Frondat F., Dournaux J. -L., Dumas D., Ernenwein J. -P., Fasola G., Funk S., Gironnet J., Graham J. A., Greenshaw T., Hervet O., Hidaka N., Hinton J. A., Huet J. -M., Jankowsky D., Jegouzo I., Jogler T., Kawashima T., Kraus M., Laporte P., Leach S., Lefaucheur J., Markoff S., Melse T., Minaya I. A., Mohrmann L., Molyneux P., Moore P., Nolan S. J., Okumura A., Osborne J. P., Parsons R. D., Rosen S., Ross D., Rowell G., Rulten C. B., Sato Y., Sayede F., Schmoll J., Schoorlemmer H., Servillat M., Sol H., Stamatescu V., Stephan M., Stuik R., Sykes J., Tajima H., Thornhill J., Tibaldo L., Trichard C., Varner G., Vink J., Watson J. J., White R., Yamane N., Zech A., Zink A., Zorn J.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 876 巻頁： 1-4 2017年12月

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記述言語：英語掲載種別：研究論文（学術雑誌）

DOI： 10.1016/j.nima.2016.12.010

Web of Science
Prototyping hexagonal light concentrators using high-reflectance specular films for the Large-Sized Telescopes of the Cherenkov Telescope Array 査読有り

A. Okumura, et al.

Journal of Instrumentation 12 巻頁： P12008 2017年12月

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担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

DOI： 10.1088/1748-0221/12/12/P12008
Prototyping hexagonal light concentrators using high-reflectance specular films for the Large-Sized Telescopes of the Cherenkov Telescope Array

Okumura A., Dang T. V., Ono S., Tanaka S., Hayashida M., Hinton J., Katagiri H., Noda K., Teshima M., Yamamoto T., Yoshida T.

JOURNAL OF INSTRUMENTATION 12 巻 2017年12月

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記述言語：英語掲載種別：研究論文（学術雑誌）

DOI： 10.1088/1748-0221/12/12/P12008

Web of Science
TARGET 5: A new multi-channel digitizer with triggering capabilities for gamma-ray atmospheric Cherenkov telescopes

Albert A., Funk S., Katagiri H., Kawashima T., Murphy M., Okumura A., Quagliani R., Sapozhnikov L., Shigenaka A., Tajima H., Tibaldo L., Vandenbroucke J., Varner G., Wu T.

ASTROPARTICLE PHYSICS 92 巻頁： 49-61 2017年6月

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記述言語：英語掲載種別：研究論文（学術雑誌）

DOI： 10.1016/j.astropartphys.2017.05.003

Web of Science
Prospects for Cherenkov Telescope Array Observations of the Young Supernova Remnant RX J1713.7-3946

Acero F., Aloisio R., Amans J., Amato E., Antonelli L. A., Aramo C., Armstrong T., Arqueros F., Asano K., Ashley M., Backes M., Balazs C., Balzer A., Bamba A., Barkov M., Barrio J. A., Benbow W., Bernloehr K., Beshley V., Bigongiari C., Biland A., Bilinsky A., Bissaldi E., Biteau J., Blanch O., Blasi P., Blazek J., Boisson C., Bonanno G., Bonardi A., Bonavolonta C., Bonnoli G., Braiding C., Brau-Nogue S., Bregeon J., Brown A. M., Bugaev V., Bulgarelli A., Bulik T., Burton M., Burtovoi A., Busetto G., Bottcher M., Cameron R., Capalbi M., Caproni A., Caraveo P., Carosi R., Cascone E., Cerruti M., Chaty S., Chen A., Chen X., Chernyakova M., Chikawa M., Chudoba J., Cohen-Tanugi J., Colafrancesco S., Conforti V., Contreras J. L., Costa A., Cotter G., Covino S., Covone G., Cumani P., Cusumano G., D'Ammando F., D'Urso D., Daniel M., Dazzi F., De Angelis A., De Cesare G., De Franco A., De Frondat F., Dal Pino E. M. de Gouveia, De Lisio C., Lopez R. de los Reyes, De Lotto B., de Naurois M., De Palma F., Del Santo M., Delgado C., della Volpe D., Di Girolamo T., Di Giulio C., Di Pierro F., Di Venere L., Doro M., Dournaux J., Dumas D., Dwarkadas V., Diaz C., Ebr J., Egberts K., Einecke S., Elsaesser D., Eschbach S., Falceta-Goncalves D., Fasola G., Fedorova E., Fernandez-Barral A., Ferrand G., Fesquet M., Fiandrini E., Fiasson A., Filipovic M. D., Fioretti V., Font L., Fontaine G., Franco F. J., Freixas Coromina L., Fujita Y., Fukui Y., Funk S., Forster A., Gadola A., Lopez R. Garcia, Garczarczyk M., Giglietto N., Giordano F., Giuliani A., Glicenstein J., Gnatyk R., Goldoni P., Grabarczyk T., Graciani R., Graham J., Grandi P., Granot J., Green A. J., Griffiths S., Gunji S., Hakobyan H., Hara S., Hassan T., Hayashida M., Heller M., Helo J. C., Hinton J., Hnatyk B., Huet J., Huetten M., Humensky T. B., Hussein M., Horandel J., Ikeno Y., Inada T., Inome Y., Inoue S., Inoue T., Inoue Y., Ioka K., Iori M., Jacquemier J., Janecek P., Jankowsky D., Jung I., Kaaret P., Katagiri H., Kimeswenger S., Kimura S., Knodlseder J., Koch B., Kocot J., Kohri K., Komin N., Konno Y., Kosack K., Koyama S., Kraus M., Kubo H., Mezek G. Kukec, Kushida J., La Palombara N., Lalik K., Lamanna G., Landt H., Lapington J., Laporte P., Lee S., Lees J., Lefaucheur J., Lenain J. -P., Leto G., Lindfors E., Lohse T., Lombardi S., Longo F., Lopez M., Lucarelli F., Luque-Escamilla P. L., Lopez-Coto R., Maccarone M. C., Maier G., Malaguti G., Mandat D., Maneva G., Mangano S., Marcowith A., Marti J., Martinez M., Martinez G., Masuda S., Maurin G., Maxted N., Melioli C., Mineo T., Mirabal N., Mizuno T., Moderski R., Mohammed M., Montaruli T., Moralejo A., Mori K., Morlino G., Morselli A., Moulin E., Mukherjee R., Mundell C., Muraishi H., Murase K., Nagataki S., Nagayoshi T., Naito T., Nakajima D., Nakamori T., Nemmen R., Niemiec J., Nieto D., Nievas-Rosillo M., Nikolajuk M., Nishijima K., Noda K., Nogues L., Nosek D., Novosyadlyj B., Nozaki S., Ohira Y., Ohishi M., Ohm S., Okumura A., Ong R. A., Orito R., Orlati A., Ostrowski M., Oya I., Padovani M., Palacio J., Palatka M., Paredes J. M., Pavy S., Pe'er A., Persic M., Petrucci P., Petruk O., Pisarski A., Pohl M., Porcelli A., Prandini E., Prast J., Principe G., Prouza M., Pueschel E., Puelhofer G., Quirrenbach A., Rameez M., Reimer O., Renaud M., Ribo M., Rico J., Rizi V., Rodriguez J., Fernandez G. Rodriguez, Rodriguez Vazquez J. J., Romano P., Romeo G., Rosado J., Rousselle J., Rowell G., Rudak B., Sadeh I., Safi-Harb S., Saito T., Sakaki N., Sanchez D., Sangiorgi P., Sano H., Santander M., Sarkar S., Sawada M., Schioppa E. J., Schoorlemmer H., Schovanek P., Schussler F., Sergijenko O., Servillat M., Shalchi A., Shellard R. C., Siejkowski H., Sillanpaa A., Simone D., Sliusar V., Sol H., Stanic S., Starling R., Stawarz L., Stefanik S., Stephan M., Stolarczyk T., Szanecki M., Szepieniec T., Tagliaferri G., Tajima H., Takahashi M., Takeda J., Tanaka M., Tanaka S., Tejedor L. A., Telezhinsky I., Temnikov P., Terada Y., Tescaro D., Teshima M., Testa V., Thoudam S., Tokanai F., Torres D. F., Torresi E., Tosti G., Townsley C., Travnicek P., Trichard C., Trifoglio M., Tsujimoto S., Vagelli V., Vallania P., Valore L., van Driel W., van Eldik C., Vandenbroucke J., Vassiliev V., Vecchi M., Vercellone S., Vergani S., Vigorito C., Vorobiov S., Vrastil M., Vazquez Acosta M. L., Wagner S. J., Wagner R., Wakely S. P., Walter R., Ward J. E., Watson J. J., Weinstein A., White M., White R., Wierzcholska A., Wilcox P., Williams D. A., Wischnewski R., Wojcik P., Yamamoto T., Yamamoto H., Yamazaki R., Yanagita S., Yang L., Yoshida T., Yoshida M., Yoshiike S., Yoshikoshi T., Zacharias M., Zampieri L., Zanin R., Zavrtanik M., Zavrtanik D., Zdziarski A., Zech A., Zechlin H., Zhdanov V., Ziegler A., Zorn J.

ASTROPHYSICAL JOURNAL 840 巻 ( 2 ) 2017年5月

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記述言語：英語掲載種別：研究論文（学術雑誌）

DOI： 10.3847/1538-4357/aa6d67

Web of Science
Operating performance of the gamma-ray Cherenkov telescope: An end-to-end Schwarzschild-Couder telescope prototype for the Cherenkov Telescope Array

Dournaux J. L., De Franco A., Laporte P., White R., Greenshaw T., Sol H., Abchiche A., Allan D., Amans J. P., Armstrong T. P., Balzer A., Berge D., Boisson C., Bousquet J. J., Brown A. M., Bryan M., Buchholtz G., Chadwick P. M., Costantini H., Cotter G., Daniel M., De Frondat F., Dumas D., Ernenwein J. P., Fasola G., Funk S., Gaudemard J., Graham J. A., Gironnet J., Hervet O., Hidaka N., Hinton J. A., Huet J. M., Jegouzo I., Jogler T., Kawashima T., Kraus M., Lapington J. S., Lefaucheur J., Markoff S., Melse T., Morhrmann L., Molnyeux P., Nolan S. J., Okumura A., Parsons R. D., Ross D., Rowell G., Sato Y., Sayede F., Schmoll J., Schoorlemmer H., Servillat M., Stamatescu V., Stephan M., Stuik R., Sykes J., Tajima H., Thornhill J., Tibaldo L., Trichard C., Vinkh J., Watson J., Yamane N., Zech A., Zink A.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 845 巻頁： 355-358 2017年2月

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記述言語：英語掲載種別：研究論文（学術雑誌）

DOI： 10.1016/j.nima.2016.05.059

Web of Science
TARGET 5: a new multi-channel digitizer with triggering capabilities for gamma-ray atmospheric Cherenkov telescopes 査読有り

A. Albert, S. Funk, T. Kawashima, M. Murphy, A. Okumura, R. Quagliani, L. Sapozhnikov, H. Tajima, L. Tibaldo, J. Vandenbroucke, G. Varner, T. Wu

Astroparticle Physics 92 巻頁： 49-61 2017年

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担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

DOI： 10.1016/j.astropartphys.2017.05.003
Inauguration and First Light of the GCT-M Prototype for the Cherenkov Telescope Array

Watson J. J., De Franco A., Abchiche A., Allan D., Amans J. -P., Armstrong T. P., Balzer A., Berge D., Boisson C., Bousquet J. -J., Brown A. M., Bryan M., Buchholtz G., Chadwick P. M., Costantini H., Cotter G., Daniel M. K., De Frondat F., Dournaux J. -L., Dumas D., Ernenwein J. -P., Fasola G., Funk S., Gironnet J., Graham J. A., Greenshaw T., Hervet O., Hidaka N., Hinton J. A., Huet J. -M., Jegouzo I., Jogler T., Kraus M., Lapington J. S., Laporte P., Lefaucheur J., Markoff S., Melse T., Mohrmann L., Molyneux P., Nolan S. J., Okumura A., Osborne J. P., Parsons R. D., Rosen S., Ross D., Rowell G., Rulten C. B., Sato Y., Sayede F., Schmoll J., Schoorlemmer H., Servillat M., Sol H., Stamatescu V., Stephan M., Stuik R., Sykes J., Tajima H., Thornhill J., Tibaldo L., Trichard C., Vink J., White R., Yamane N., Zech A., Zink A., Zorn J.

HIGH ENERGY GAMMA-RAY ASTRONOMY 1792 巻 2017年

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記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：AIP Conference Proceedings

DOI： 10.1063/1.4969027

Web of Science

Scopus
The Gamma-ray Cherenkov Telescope for the Cherenkov Telescope Array

Tibaldo L., Abchiche A., Allan D., Amans J. -P., Armstrong T. P., Balzer A., Bergey D., Boisson C., Bousquet J. -J., Brown A. M., Bryan M., Buchholtz G., Chadwick P. M., Costantini H., Cotter G., Daniels M. K., De Franco A., De Frondat F., Dournaux J. -L., Dumas D., Ernenwein J. -P., Fasola G., Funk S., Gironnet J., Graham J. A., Greenshaws T., Hervet O., Hidaka N., Hintoni J. A., Huet J. -M., Jankowsky D., Jegouzo I., Jogler T., Kraus M., Lapington J. S., Laporte P., Lefaucheur J., Markoff S., Melse T., Mohrmann L., Molyneux P., Nolan S. J., Okumura A., Osborne J. P., Parsons R. D., Rosen S., Ross D., Rowell G., Rulten C. B., Sato Y., Sayede F., Schmoll J., Schoorlemmer H., Servillat M., Sol H., Stamatescu V., Stephan M., Stuik R., Sykes J., Tajima H., Thornhill J., Trichard C., Vink J., Watson J. J., White R., Yamane N., Zech A., Zink A., Zorn J.

HIGH ENERGY GAMMA-RAY ASTRONOMY 1792 巻 2017年

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記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：AIP Conference Proceedings

DOI： 10.1063/1.4969025

Web of Science

Scopus
TARGET: A Digitizing And Trigger ASIC For The Cherenkov Telescope Array

Funk S., Jankowsky D., Katagiri H., Kraus M., Okumura A., Schoorlemmer H., Shigenaka A., Tajima H., Tibaldo L., Varner G., Zink A., Zorn J.

HIGH ENERGY GAMMA-RAY ASTRONOMY 1792 巻 2017年

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記述言語：英語掲載種別：研究論文（国際会議プロシーディングス）出版者・発行元：AIP Conference Proceedings

DOI： 10.1063/1.4969033

Web of Science

Scopus
フェルミ衛星によるMBM 53-55分子雲・Pegasus Loop領域における星間ガスと宇宙線の研究

水野恒史, Abdollahi S, 福井康雄, 林克洋, 奥村曉, 田島宏康, 山本宏昭

日本物理学会講演概要集 72 巻 ( 0 ) 頁： 461-461 - 461 2017年

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

Fermi衛星LAT検出器によるMBM 53-55分子雲およびPegasus Loop領域の観測結果について報告する。ガンマ線と星間ガスのトレーサーを詳細に比較し、伝統的なトレーサーである21cm線(水素原子ガス)および2.6mm線(水素分子ガス)では検出しきれない通称「dark gas」の空間分布と、ガンマ線放出率(宇宙線強度に比例)を算出した。本講演では解析方法と得られた結果を紹介し、星間ガスと宇宙線強度について議論する。

DOI： 10.11316/jpsgaiyo.72.1.0_461
散乱型偏光度検出器の性能向上を目指したシンチレーターの反射材の改良

齋藤耀, 郡司修一, 中森健之, 奥村曉, 中澤知洋, 黒澤俊介, 渡邊直輝, 軽部敦人

日本物理学会講演概要集 72 巻 ( 0 ) 頁： 414-414 - 414 2017年

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記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.72.2.0_414
CTA報告124：CTAのTeV領域電子・陽電子スペクトル測定性能のシミュレーション評価(II)

大石理子, 西嶋恭司, 三浦智佳, 吉越貴紀, 吉田龍生, 李健, 他 CTA-Japan コンソーシアム, 稲田知大, 奥村曉, 片桐秀明, 櫛田淳子, 郡司修一, 斎藤隆之, 榊直人, 千川道幸

日本物理学会講演概要集 72 巻頁： 356 - 356 2017年

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記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.72.2.0_356
Simulating the optical performance of a small-sized telescope with secondary optics for the Cherenkov Telescope Array 査読有り

Cameron Rulten, Andreas Zech, Akira Okumura, Philippe Laporte, Jürgen Schmoll

Astroparticle Physics 82 巻頁： 36-48 2016年5月

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記述言語：英語掲載種別：研究論文（学術雑誌）

DOI： 10.1016/j.astropartphys.2016.05.002
ROBAST: Development of a ROOT-based ray-tracing library for cosmic-ray telescopes and its applications in the Cherenkov Telescope Array 査読有り

Akira Okumura, Koji Noda, Cameron Rulten

Astroparticle Physics 2015年12月

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担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

DOI： 10.1016/j.astropartphys.2015.12.003
Prototyping of Hexagonal Light Concentrators for the Large-Sized Telescopes of the Cherenkov Telescope Array

Akira Okumura, Sakiya Ono, Syunya Tanaka, Masaaki Hayashidad, Hideaki Katagiri, Tatsuo Yoshida

Proceedings of the 34th International Cosmic Ray Conference (ICRC2015) 頁： 951 2015年

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担当区分：筆頭著者記述言語：英語
ROBAST: Development of a Non-sequential Ray-tracing Simulation Library and its Applications in the Cherenkov Telescope Array

A. Okumura, K. Noda, C. Rulten

Proceedings of the 34th International Cosmic Ray Conference (ICRC2015) 頁： 941 2015年

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記述言語：英語掲載種別：研究論文（学術雑誌）
Inferred Cosmic‐Ray Spectrum from Fermi Large Area Telescope γ‐Ray Observations of Earth's Limb

M. Ackermann, M. Ajello, A. Albert, A. Allafort, L. Baldini, G. Barbiellini, D. Bastieri, K. Bechtol, R. Bellazzini, R. D. Blandford, E. D. Bloom, E. Bonamente, E. Bottacini, A. Bouvier, T. J. Brandt, M. Brigida, P. Bruel, R. Buehler, S. Buson, G. A. Caliandro, R. A. Cameron, P. A. Caraveo, C. Cecchi, E. Charles, R. C. G. Chaves, A. Chekhtman, J. Chiang, G. Chiaro, S. Ciprini, R. Claus, J. Cohen‐Tanugi, J. Conrad, S. Cutini, M. Dalton, F. D’Ammando, A. de Angelis, F. de Palma, C. D. Dermer, S. W. Digel, L. Di Venere, E. do Couto e Silva, P. S. Drell, A. Drlica‐ Wagner, C. Favuzzi, S. J. Fegan, E. C. Ferrara, W. B. Focke, A. Franckowiak, Y. Fukazawa, S. Funk, P. Fusco, F. Gargano, D. Gasparrini, S. Germani, N. Giglietto, F. Giordano, M. Giroletti, T. Glanzman, G. Godfrey, G. A. Gomez‐Vargas, I. A. Grenier, J. E. Grove, S. Guiriec, M. Gustafsson, D. Hadasch, Y. Hanabata, A. K. Harding, M. Hayashida, K. Hayashi, J. W. Hewitt, D. Horan, X. Hou, R. E. Hughes, Y. Inoue, M. S. Jackson, T. Jogler, G. Jóhannesson, A. S. Johnson, T. Kamae, T. Kawano, J. Knödlseder, M. Kuss, J. Lande, S. Larsson, L. Latronico, F. Longo, F. Loparco, M. N. Lovellette, P. Lubrano, M. Mayer, M. N. Mazziotta, J. E. McEnery, J. Mehault, P. F. Michelson, W. Mitthumsiri, T. Mizuno, A. A. Moiseev, C. Monte, M. E. Monzani, A. Morselli, I. V. Moskalenko,§ S. Murgia, R. Nemmen, E. Nuss, T. Ohsugi, A. Okumura, M. Orienti, E. Orlando, J. F. Ormes, D. Paneque, J. H. Panetta, J. S. Perkins, M. Pesce‐Rollins, F. Piron, G. Pivato, T. A. Porter, S. Rainò, R. Rando, M. Razzano, S. Razzaque, A. Reimer, O. Reimer, S. Ritz, M. Roth, M. Schaal, A. Schulz, C. Sgrò, E. J. Siskind, G. Spandre, P. Spinelli, A. W. Strong, H. Takahashi, Y. Takeuchi, J. G. Thayer, J. B. Thayer, D. J. Thompson, L. Tibaldo, M. Tinivella, D. F. Torres, G. Tosti, E. Troja, V. Tronconi, T. L. Usher, J. Vandenbroucke, V. Vasileiou, G. Vianello, V. Vitale, M. Werner, B. L. Winer, K. S. Wood, M. Wood, and Z. Yang

112 巻頁： 151103 2014年

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記述言語：英語掲載種別：研究論文（学術雑誌）
Geometry dependence of the light collection efficiency of BGO crystal scintillators read out by avalanche photo diodes 査読有り

M. Sasano, et al.

Nuclear Instruments and Methods in Physics Research A 715 巻頁： 105-111 2013年3月

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記述言語：英語掲載種別：研究論文（学術雑誌）

DOI： 10.1016/j.nima.2013.03.022
Optimization of the collection efficiency of a hexagonal light collector using quadratic and cubic Bézier curves 査読有り

Akira Okumura

Astroparticle Physics 38 巻頁： 18-24 2012年9月

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担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）
Gamma-Ray Observations of the Orion Molecular Clouds with the Fermi Large Area Telescope 査読有り

M. Ackermann, M. Ajello, A. Allafort, E. Antolini, L. Baldini, J. Ballet, G. Barbiellini, D. Bastieri, K. Bechtol, R. Bellazzini, B. Berenji, R. D. Blandford, E. D. Bloom, E. Bonamente, A. W. Borgland, E. Bottacini, T. J. Brandt, J. Bregeon, M. Brigida, P. Bruel, R. Buehler, S. Buson, G. A. Caliandro, R. A. Cameron, P. A. Caraveo, C. Cecchi, A. Chekhtman, J. Chiang, S. Ciprini, R. Claus, J. Cohen-Tanugi, J. Conrad, F. D'Ammando, A. de Angelis, F. de Palma, C. D. Dermer, E. do Couto e Silva, P. S. Drell, A. Drlica-Wagner, T. Enoto, L. Falletti, C. Favuzzi, S. J. Fegan, E. C. Ferrara, W. B. Focke, Y. Fukazawa, Y. Fukui, P. Fusco, F. Gargano, D. Gasparrini, S. Germani, N. Giglietto, F. Giordano, M. Giroletti, T. Glanzman, G. Godfrey, S. Guiriec, D. Hadasch, Y. Hanabata, A. K. Harding, M. Hayashida, K. Hayashi, D. Horan, X. Hou, R. E. Hughes, M. S. Jackson, G. Jóhannesson, A. S. Johnson, T. Kamae, H. Katagiri, J. Kataoka, M. Kerr, J. Knödlseder, M. Kuss, J. Lande, S. Larsson, S.-H. Lee, F. Longo, F. Loparco, M. N. Lovellette, P. Lubrano, K. Makishima, M. N. Mazziotta, J. Mehault, W. Mitthumsiri, A. A. Moiseev, C. Monte, M. E. Monzani, A. Morselli, I. V. Moskalenko, S. Murgia, T. Nakamori, M. Naumann-Godo, S. Nishino, J. P. Norris, E. Nuss, M. Ohno, T. Ohsugi, A. Okumura, M. Orienti, E. Orlando, J. F. Ormes, M. Ozaki, D. Paneque, J. H. Panetta, D. Parent, V. Pelassa, M. Pesce-Rollins, M. Pierbattista, F. Piron, G. Pivato, T. A. Porter, S. Rainò, M. Razzano, A. Reimer, O. Reimer, M. Roth, H. F.-W. Sadrozinski, C. Sgrò, E. J. Siskind, G. Spandre, P. Spinelli, A. W. Strong, H. Takahashi, T. Takahashi, T. Tanaka, J. G. Thayer, J. B. Thayer, O. Tibolla, M. Tinivella, D. F. Torres, A. Tramacere, E. Troja, Y. Uchiyama, T. L. Usher, J. Vandenbroucke, V. Vasileiou, G. Vianello, V. Vitale, A. P. Waite, P. Wang, B. L. Winer, K. S. Wood, Z. Yang, S. Zimmer

The Astrophysical Journal 756 巻 ( 1 ) 頁： 4 2012年9月

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担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）
TARGET: A multi-channel digitizer chip for very-high-energy gamma-ray telescopes 査読有り

K. Bechtol, S. Funk, A. Okumura, L.L. Ruckman, A. Simons, H. Tajima, J. Vandenbroucke, G.S. Varner

Astroparticle Physics 36 巻 ( 1 ) 頁： 156-165 2012年7月

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担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）
Design concepts for the Cherenkov Telescope Array CTA: an advanced facility for ground-based high-energy gamma-ray astronomy 査読有り

Actis, M. et al.

Experimental Astronomy 32 巻 ( 3 ) 頁： 193-316 2011年11月

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記述言語：英語掲載種別：研究論文（学術雑誌）
Development of Non-sequential Ray-tracing Software for Cosmic-ray Telescopes

Akira Okumura, Masaaki Hayashida, Hideaki Katagiri, Takayuki Saito, Vladimir Vassiliev

Proceedings of the 32nd International Cosmic Ray Conference 9 巻頁： 210-213 2011年

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担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）
Development of an ASIC for Dual Mirror Telescopes of the Cherenkov Telescope Array

Justin Vandenbroucke, Keith Bechtol, Stefan Funk, Akira Okumura, Hiro Tajima, Gary Varner

Proceedings of the 32nd International Cosmic Ray Conference 9 巻頁： 161-164 2011年

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担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

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CTA大口径望遠鏡初号機のカメラの較正と試験観測

齋藤隆之, 猪目祐介, 岩村由樹, 大岡秀行, 岡崎奈緒, 小林志鳳, 櫻井駿介, 高橋光成, 手嶋政廣, HADASCH Daniela, MAZIN Daniel, 岡知彦, 梶原侑貴, 窪秀利, 野崎誠也, 平子丈, 増田周, 奥村曉, 折戸玲子, 片桐秀明, 鈴木萌, 野上優人, 吉田龍生, 櫛田淳子, 西嶋恭司, 古田智也, 郡司修一, 門叶冬樹, 中森健之, 砂田裕志, 寺田幸功, 永吉勤, 田中真伸, 田村謙治, 町支勇貴, 山本常夏, 林田将明, 馬場彩, 池野正弘, 内田智久

日本天文学会年会講演予稿集2019 巻頁： 236 2019年8月

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記述言語：日本語

J-GLOBAL
CTA報告151:CTA大口径望遠鏡初号機におけるカメラ集光器の量産と性能評価

鈴木萌, 山本常夏, 吉田龍生, 稲田知大, 猪目祐介, 岩村由樹, 大岡秀行, 岡崎奈緒, 岡知彦, 奥村曉, 折戸玲子, 梶原侑貴, 片桐秀明, 櫛田淳子, 木村颯一朗, 窪秀利, 郡司修一, 小山志勇, 齋藤隆之, 櫻井駿介, 澤田真理, 砂田裕志, 高橋光成, 田中真伸, 田村謙治, 町支勇貴, 辻本晋平, 手嶋政廣, 手嶋政廣, 寺田幸功, 門叶冬樹, 中森健之, 永吉勤, 西嶋恭司, 西山楽, 野崎誠也, 林田将明, 馬場彩, 平子丈, 深見哲志, 古田智也, 増田周, HADASCH Daniela, MAZIN Daniel

日本物理学会講演概要集(CD-ROM)74 巻 ( 1 ) 頁： ROMBUNNO.17aK105‐8 2019年3月

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記述言語：日本語

J-GLOBAL
CTA 報告 155：全体報告

手嶋政廣, 窪秀利, 戸谷友則, 浅野勝晃, 井岡邦仁, 石尾一馬, 稲田知大, 井上進, 井上剛志, 井上芳幸, 猪目祐介, 岩村由樹, 内山泰伸, 大石理子, 大岡秀行, 大谷恵生, 大平豊, 岡知彦, 岡崎奈緒, 緒方智之, 奥村曉, 折戸玲子, 加賀谷美佳, 梶原侑貴, 片岡淳, 片桐秀明, 勝倉大輔, 勝田哲, 川中宣太, 木坂将大, 櫛田淳子, 郡司修一, 郡和範, 小林志鳳, 齋藤隆之, 榊直人, 櫻井駿介, 佐野栄俊, 澤田真理, 柴田徹, 鈴木萌, 鈴木寛大, 須田祐介, 砂田裕志, 高田順平, 高橋慶太郎, 高橋弘充, 高橋光成, 田島宏康, 立原研悟, 田中周太, 田中孝明, 田中真伸, 田村謙治, 千川道幸, 町支勇貴, 辻本晋平, 鶴剛, 寺田幸功, 當真賢二, 門叶冬樹, 内藤統也, 長瀧重博, 中村裕樹, 中森健之, 中山和則, 西嶋恭司, 野崎誠也, 野田浩司, 早川貴敬, 林克洋, 林田将明, 原敏, 馬場彩, 日高直哉, 廣島渚, 広谷幸一, 深沢泰司, 深見哲志, 福井康雄, 藤田裕, 藤原千賀己, 古田智也, 松本浩典, 水野恒史, 村石浩, 村瀬孔大, 森浩二, 柳田昭平, 山崎了, 山根悠望子, 山本常夏, 山本宏昭, 吉越貴紀, 吉田篤正, 吉田龍生, 李兆衡

日本物理学会講演概要集74.2 巻頁： 358 - 358 2019年

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記述言語：日本語出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.74.2.0_358
CTA報告147：全体報告

窪秀利, 手嶋政廣, 戸谷友則, 浅野勝晃, 朝野彰, 井岡邦仁, 石尾一馬, 稲田知大, 井上進, 井上剛志, 井上芳幸, 猪目祐介, 岩村由樹, 内山泰伸, 大石理子, 大岡秀行, 大谷恵生, 大平豊, 岡知彦, 岡崎奈緒, 緒方智之, 奥村曉, 折戸玲子, 加賀谷美佳, 梶原侑貴, 片岡淳, 片桐秀明, 勝倉大輔, 勝田哲, 神本匠, 川中宣太, 木坂将大, 櫛田淳子, 久門拓, 郡司修一, 郡和範, 小林志鳳, 齋藤隆之, 榊直人, 櫻井駿介, 佐々井義矩, 佐野栄俊, 澤田真理, 柴田徹, 鈴木萌, 須田祐介, 砂田裕志, 関崎晴仁, 高田順平, 高橋慶太郎, 高橋知也, 高橋弘充, 高橋光成, 田島典夫, 田島宏康, 立原研悟, 田中周太, 田中孝明, 田中真伸, 種田裕貴, 田村謙治, 千川道幸, 町支勇貴, 辻本晋平, 鶴剛, 寺田幸功, 當真賢二, 門叶冬樹, 内藤統也, 長瀧重博, 中村裕樹, 中森健之, 中山和則, 永吉勤, 西嶋恭司, 野崎誠也, 野田浩司, 早川貴敬, 林克洋, 林田将明, 原敏, 馬場彩, 日高直哉, 平子丈, 廣島渚, 広谷幸一, 深沢泰司, 深見哲志, 福井康雄, 藤田裕, 藤原千賀己, 古田智也, 増田周, 松本浩典, 三浦智佳, 水野恒史, 村石浩, 村瀬孔大, 森浩二, 柳田昭平, 山崎了, 山根悠望子, 山本常夏, 山本宏昭, 吉池智史, 吉越貴紀, 吉田篤正, 吉田龍生, 李健, 李兆衡

日本物理学会講演概要集74.1 巻頁： 556 - 556 2019年

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記述言語：日本語出版者・発行元：一般社団法人日本物理学会

DOI： 10.11316/jpsgaiyo.74.1.0_556
CTA報告142:CTA大口径望遠鏡初号機の焦点面カメラ統合試験(II)

砂田裕志, 稲田知大, 猪目祐介, 岩村由樹, 大岡秀行, 岡崎奈緒, 奥村曉, 折戸玲子, 片岡淳, 片桐秀明, 櫛田淳子, 木村颯一朗, 窪秀利, 郡司修一, 小山志勇, 齋藤隆之, 櫻井駿介, 澤田真理, 鈴木萌, 高橋光成, 高原大, 田中真伸, 辻本晋平, 手嶋政廣, 手嶋政廣, 寺田幸功, 門叶冬樹, 中嶋大輔, 中森健之, 永吉勤, 西嶋恭司, 西山楽, 野崎誠也, 林田将明, 馬場彩, 平子丈, 深見哲志, 増田周, 山本常夏, 吉田龍生, HADASCH Daniela, MAZIN Daniel

日本物理学会講演概要集(CD-ROM)73 巻 ( 2 ) 頁： ROMBUNNO.16pS36‐8 2018年9月

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記述言語：日本語

J-GLOBAL
CTA大口径望遠鏡初号機のカメラ最終試験報告

櫻井駿介, 稲田知大, 猪目祐介, 岩村由樹, 大岡秀行, 岡崎奈緒, 齋藤隆之, 澤田真理, 高橋光成, 手嶋政廣, 中嶋大輔, 深見哲志, HADASCH Daniela, MAZIN Daniel, 奥村曉, 折戸玲子, 片岡淳, 片桐秀明, 鈴木萌, 吉田龍生, 窪秀利, 今野裕介, 野崎誠也, 平子丈, 増田周, 木村颯一郎, 櫛田淳子, 辻本晋平, 西島恭司, 郡司修一, 門叶冬樹, 中森健之, 小山志勇, 砂田裕志, 寺田幸功, 永吉勤, 西山楽, 馬場彩, 高原大, 林田将明, 山本常夏, 池野正弘, 内田智久, 田中真伸

日本天文学会年会講演予稿集2018 巻頁： 229 2018年8月

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記述言語：日本語

J-GLOBAL
CTA報告133:CTA大口径望遠鏡初号機の焦点面カメラ統合試験

野崎誠也, 稲田知大, 猪目祐介, 岩村由樹, 大岡秀行, 奥村曉, 岡崎奈緒, 折戸玲子, 片岡淳, 片桐秀明, 加藤翔, 木村颯一朗, 櫛田淳子, 窪秀利, 郡司修一, 小山志勇, 今野裕介, 齋藤隆之, 櫻井駿介, 澤田真理, 砂田裕志, 高橋光成, 高原大, 田中真伸, 辻本晋平, 手嶋政廣, 手嶋政廣, 寺田幸功, 門叶冬樹, 中嶋大輔, 中森健之, 永吉勤, 西嶋恭司, 西山楽, 林田将明, 馬場彩, 平子丈, 深見哲志, 増田周, 山本常夏, 吉田龍生, HADASCH Daniela, MAZIN Daniel, 池野正弘, 池野正弘, 内田智久, 内田智久

日本物理学会講演概要集(CD-ROM)73 巻 ( 1 ) 頁： ROMBUNNO.22aK307‐9 2018年3月

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CTA報告134:CTA大口径望遠鏡搭載光電子増倍管の経年変化の研究

櫻井駿介, 永吉勤, 稲田知大, 猪目祐介, 岩村由樹, 大岡秀行, 奥村曉, 岡崎奈緒, 折戸玲子, 片岡淳, 片桐秀明, 木村颯一朗, 櫛田淳子, 窪秀利, 郡司修一, 小山志勇, 今野裕介, 齋藤隆之, 澤田真理, 砂田裕志, 高橋光成, 辻本晋平, 手嶋政廣, 手嶋政廣, 寺田幸功, 門叶冬樹, 中嶋大輔, 中森健之, 西嶋恭司, 西山楽, 野崎誠也, 林田将明, 馬場彩, 平子丈, 深見哲志, 増田周, 山本常夏, 吉田龍生, HADASCH Daniela, MAZIN Daniel, MAZIN Daniel

日本物理学会講演概要集(CD-ROM)73 巻 ( 1 ) 頁： ROMBUNNO.22aK307‐10 2018年3月

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記述言語：日本語

J-GLOBAL
CTA大口径望遠鏡初号機の焦点面カメラ統合試験

平子丈, 窪秀利, 今野裕介, 野崎誠也, 増田周, 稲田知大, 岩村由樹, 大岡秀行, 岡崎奈緒, 齋藤隆之, 櫻井駿介, 高橋光成, 手嶋政廣, 中嶋大輔, 林田将明, 深見哲志, HADASCH Daniela, MAZIN Daniel, 猪目祐介, 高原大, 山本常夏, 奥村曉, 折戸玲子, 片桐秀明, 吉田龍生, 木村颯一朗, 櫛田淳子, 辻本晋平, 西嶋恭司, 郡司修一, 門叶冬樹, 中森健之, 小山志勇, 砂田裕志, 寺田幸功, 永吉勤, 西山楽, 馬場彩, 片岡淳, 澤田真理, 池野正弘, 田中真伸

日本天文学会年会講演予稿集2018 巻頁： 237 2018年2月

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記述言語：日本語

J-GLOBAL
CTA報告123:全体報告

窪秀利, 手嶋政廣, 手嶋政廣, 戸谷友則, 浅野勝晃, 朝野彰, 井岡邦仁, 石尾一馬, 石尾一馬, 稲田知大, 井上進, 井上剛志, 井上芳幸, 猪目祐介, 岩村由樹, WARREN Donald, 内山泰伸, 大石理子, 大岡秀行, 大平豊, 岡崎奈緒, 奥村曉, 折戸玲子, 加賀谷美佳, 格和純, 片岡淳, 片桐秀明, 勝倉大輔, 勝田哲, 加藤翔, 神本匠, 川中宣太, 木坂将大, 木村颯一朗, CUI Xiaohong, 櫛田淳子, 久門拓, 黒田隼人, 郡司修一, 郡和範, 小山志勇, KONG Albert K. H, 齋藤隆之, 榊直人, 櫻井駿介, 佐々井義矩, 佐野栄俊, 澤田真理, 柴田徹, DZHATDOEV Timur, 砂田裕志, 関崎晴仁, 高田順平, 高橋慶太郎, 高橋知也, 高橋弘充, 高橋光成, 田島宏康, 立原研悟, 田中周太, 田中孝明, 田中真伸, 田中康之, 種田裕貴, TAM Thomas P. H, CHENG K. S, 千川道幸, 辻本晋平, 鶴剛, TIAN Wenwu, 寺田幸功, 當真賢二, 門叶冬樹, 内藤統也, 中嶋大輔, 長瀧重博, 中村裕樹, 中森健之, 中山和則, 永吉勤, 西嶋恭司, 西山楽, 野崎誠也, 野田浩司, BARKOV Maxim, HADASCH Daniela, 早川貴敬, 林克洋, 林田将明, 原敏, 馬場彩, 日高直哉, 平子丈, 廣島渚, 廣島渚, 広谷幸一, HUI David C. Y, FERRAND Gilles, 深沢泰司, 深見哲志, 福井康雄, 藤田裕, HE Haoning, MAJUMDAR Pratik, MAZIN Daniel, 増田周, 松本浩典, 三浦知佳, 水野恒史, 村石浩, 村瀬孔大, 森浩二, 柳田昭平, 山崎了, 山本常夏, 山本宏昭, 吉池智史, 吉越貴紀, 吉田篤正, 吉田龍生

日本物理学会講演概要集(CD-ROM)72 巻 ( 2 ) 頁： ROMBUNNO.13aU32‐1 2017年9月

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記述言語：日本語

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CTA報告126:CTA大口径望遠鏡焦点面検出器の改良と較正

砂田裕志, 池野正弘, 池野正弘, 稲田知大, 猪目祐介, 岩村由樹, 内田智久, 内田智久, 大岡秀行, 奥村曉, 岡崎奈緒, 折戸玲子, 片岡淳, 片桐秀明, 木村颯一朗, 櫛田淳子, 窪秀利, 郡司修一, 小山志勇, 今野裕介, 齋藤隆之, 澤田真理, 櫻井駿介, 高橋光成, 田中真伸, 田中真伸, 辻本晋平, 手嶋政廣, 手嶋政廣, 寺田幸功, 門叶冬樹, 中嶋大輔, 中森健之, 永吉勤, 西嶋恭司, 西山楽, 野崎誠也, 林田将明, 馬場彩, 平子丈, 深見哲志, 増田周, 山本常夏, 吉田龍生, HADASCH Daniela, MAZIN Daniel

日本物理学会講演概要集(CD-ROM)72 巻 ( 2 ) 頁： ROMBUNNO.13aU32‐11 2017年9月

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記述言語：日本語

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CTA報告125:CTA大口径望遠鏡初号機の焦点面検出器建設状況

櫻井駿介, 池野正弘, 池野正弘, 稲田知大, 猪目祐介, 岩村由樹, 内田智久, 内田智久, 大岡秀行, 奥村曉, 岡崎奈緒, 折戸玲子, 片岡淳, 片桐秀明, 木村颯一朗, 櫛田淳子, 窪秀利, 郡司修一, 小山志勇, 今野裕介, 齋藤隆之, 澤田真理, 砂田裕志, 高橋光成, 田中真伸, 田中真伸, 辻本晋平, 手嶋政廣, 手嶋政廣, 寺田幸功, 門叶冬樹, 中嶋大輔, 中森健之, 永吉勤, 西嶋恭司, 西山楽, 野崎誠也, 林田将明, 馬場彩, 平子丈, 深見哲志, 増田周, 山本常夏, 吉田龍生, HADASCH Daniela, MAZIN Daniel

日本物理学会講演概要集(CD-ROM)72 巻 ( 2 ) 頁： ROMBUNNO.13aU32‐10 2017年9月

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J-GLOBAL
CTA大口径望遠鏡初号機カメラの建設状況

平子丈, 窪秀利, 今野裕介, 野崎誠也, 増田周, 稲田知大, 岩村由樹, 大岡秀行, 岡崎奈緒, 齋藤隆之, 櫻井駿介, 高橋光成, 手嶋政廣, 中嶋大輔, 林田将明, 深見哲志, HADASCH Daniela, MAZIN Daniel, 猪目祐介, 山本常夏, 奥村曉, 折戸玲子, 片桐秀明, 吉田龍生, 木村颯一朗, 櫛田淳子, 辻本晋平, 西嶋恭司, 郡司修一, 門叶冬樹, 中森健之, 小川志勇, 砂田裕志, 寺田幸功, 永吉勤, 西山楽, 馬場彩, 片岡淳, 澤田真理, 池野正弘, 内田智久, 田中真伸

日本天文学会年会講演予稿集2017 巻頁： 255 2017年8月

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記述言語：日本語

J-GLOBAL
将来の硬X線・ガンマ線衛星に向けたシンチレータ反射材の改良

清野愛海, 奥田和史, 中澤知洋, 奥村曉, 郡司修一, 牧島一夫

日本天文学会年会講演予稿集2017 巻頁： 242 2017年8月

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記述言語：日本語

J-GLOBAL
CTA報告 119:CTA大口径望遠鏡初号機の焦点面カメラのシステム統合試験

中嶋大輔, 猪目祐介, 大岡秀行, 奥村曉, 折戸玲子, 片桐秀明, 岸田柊, 木村颯一朗, 窪秀利, 櫛田淳子, 郡司修一, 今野裕介, 齋藤隆之, 齋藤隆之, 櫻井駿介, 高橋光成, 武田淳希, 谷川俊介, TAN Dang Viet, 辻本晋平, 手嶋政廣, 手嶋政廣, 寺田幸功, 門叶冬樹, 中森健之, 永吉勤, 西嶋恭司, 西山楽, 野崎誠也, 林田将明, 馬場彩, 増田周, 山本常夏, 吉田龍生, 吉田麻佑, MAZIN Daniel, HADASCH Daniela

日本物理学会講演概要集(CD-ROM)72 巻 ( 1 ) 頁： ROMBUNNO.18pK21‐8 2017年3月

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記述言語：日本語

J-GLOBAL
CTA報告117:全体報告

手嶋政廣, 手嶋政廣, 窪秀利, 戸谷友則, 朝野彰, 浅野勝晃, 井岡邦仁, 池野祐平, 石尾一馬, 石尾一馬, 稲田知大, 井上進, 井上剛志, 井上芳幸, 猪目祐介, 岩村由樹, WARREN Donald, 内山泰伸, 梅津陽平, 大石理子, 大岡秀行, 大平豊, 岡崎奈緒, 奥村曉, 折戸玲子, 加賀谷美佳, 格和純, 片岡淳, 片桐秀明, 加藤翔, 川中宣太, 木坂将大, 岸田柊, 木村颯一朗, CUI Xiaohong, 櫛田淳子, 黒田隼人, 郡司修一, 郡和範, 小山志勇, KONG Albert K. H, 今野裕介, 齋藤隆之, 榊直人, 櫻井駿介, 佐藤雄太, 佐野栄俊, 澤田真理, 重中茜, 柴田徹, 高田順平, 高橋慶太郎, 高橋弘充, 高橋光成, 高見将太, 武田淳希, 田島宏康, 立原研悟, 田中周太, 田中孝明, 田中真伸, 田中康之, 谷川俊介, TAM Thomas P. H, TAN Dang Viet, CHENG K. S, 千川道幸, 辻本晋平, 鶴剛, TIAN Wenwu, 寺田幸功, 當真賢二, 門叶冬樹, 友野弥生, 内藤統也, 中嶋大輔, 長瀧重博, 中村裕樹, 中森健之, 中山和則, 永吉勤, 西嶋恭司, 西山楽, 野崎誠也, 野田浩司, BARKOV Maxim, HADASCH Daniela, 早川貴敬, 林克洋, 林田将明, 原敏, 馬場彩, 日高直哉, 平井亘, 廣島渚, 廣島渚, 広谷幸一, HUI DavidC. Y, FERRAND Gilles, 深沢泰司, 深見哲志, 福井康雄, 藤田裕, HE Haoning, MAJUMDAR Pratik, MAZIN Daniel, 増田周, 松本浩典, 水野恒史, 村石浩, 村瀬孔大, 本橋大輔, 森浩二, 柳田昭平, 山崎了, 山根暢仁, 山本常夏, 山本宏昭, 吉池智史, 吉越貴紀

日本物理学会講演概要集(CD-ROM)72 巻 ( 1 ) 頁： ROMBUNNO.18aS11‐5 2017年3月

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▼全件表示

MISCの先頭へ▲

講演・口頭発表等 4

Final characterisation and design of the Gamma-ray Cherenkov Telescope (GCT) for the Cherenkov Telescope Array

Le Blanc O.

Proceedings of SPIE - The International Society for Optical Engineering

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開催年月日： 2018年1月

記述言語：英語会議種別：口頭発表（一般）

DOI： 10.1117/12.2313158

Scopus
Inauguration and first light of the GCT-M prototype for the Cherenkov telescope array

Watson J.

AIP Conference Proceedings

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開催年月日： 2017年1月

記述言語：英語会議種別：口頭発表（一般）

DOI： 10.1063/1.4969027

Scopus
The gamma-ray Cherenkov telescope for the Cherenkov telescope array

Tibaldo L.

AIP Conference Proceedings

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開催年月日： 2017年1月

記述言語：英語会議種別：口頭発表（一般）

DOI： 10.1063/1.4969025

Scopus
TARGET: A digitizing and trigger ASIC for the Cherenkov telescope array

Funk S.

AIP Conference Proceedings

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開催年月日： 2017年1月

記述言語：英語会議種別：口頭発表（一般）

DOI： 10.1063/1.4969033

Scopus

講演・口頭発表等の先頭へ▲

科研費 14

多粒子宇宙観測技術の開発による新たな「眼」の獲得

研究課題/研究課題番号：23H04897 2023年4月 - 2028年3月

科学研究費助成事業学術変革領域研究(A)

奥村曉

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担当区分：研究代表者

配分額：112710000円（直接経費：86700000円、間接経費：26010000円）
マルチメッセンジャー宇宙物理学：静的な宇宙から躍動する宇宙へ

研究課題/研究課題番号：23H04891 2023年4月 - 2028年3月

日本学術振興会科学研究費助成事業学術変革領域研究(A)

吉田滋, 森崎宗一郎, 田中雅臣, 芹野素子, 野田浩司, 奥村曉, 米徳大輔, 木村成生, 柴田大, 石原安野, カンノンキップ, 馬場彩, 森崎宗一郎, 田中雅臣, 芹野素子, 野田浩司, 奥村曉, 米徳大輔, 木村成生, 柴田大, 石原安野, カンノンキップ, 馬場彩

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担当区分：研究分担者

世界最大の宇宙ニュートリノ観測実験 IceCube と、世界最大の重力波観測実験 LIGO による非電磁波宇宙観測の時代が始まった。本研究領域では、ニュートリノ・重力波・各電磁波観測を連携させて極限宇宙の起源を探査するマルチメッセンジャー宇宙物理学の研究を推進する。ニュートリノ・重力波検出速報に即応した電波からガンマ線に至る各電磁波帯における追観測体制を構築し、融合観測研究を実施する。観測データがアーカイブ化されている観測実験については、アーカイブを照合してニュートリノ放射に伴う電磁波信号の有無を探索し、重力エネルギー開放機構のモデル検定を行う。必要な基礎開発研究も合わせて実施する。
100TeV超ガンマ線観測の開拓による銀河系内・系外宇宙線加速の総合的理解

研究課題/研究課題番号：20H01916 2020年4月 - 2023年3月

日本学術振興会科学研究費助成事業基盤研究(B) 基盤研究(B)

奥村曉

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担当区分：研究代表者

配分額：17550000円（直接経費：13500000円、間接経費：4050000円）

本研究の目的は、宇宙ガンマ線の観測エネルギー帯域を従来より1桁拡大することである。圧倒的にフラックスの低い100TeV超のガンマ線を高統計で観測する手段を提供し、1. 陽子や鉄原子核などの宇宙線ハドロン成分を1PeV以上に加速する銀河系内天体の発見（銀河中心、超新星残骸など）、2. 同じく10の20乗eV超まで宇宙線を加速する銀河系外天体の候補の発見（活動銀河核など)）の2つを将来的に可能にする。これにより、銀河系内・系外での宇宙線加速天体を担う天体は何かという問いに、最終決着をつけることを目指す。この目的のため、本研究では次世代ガンマ線望遠鏡CTA計画の焦点面カメラの開発を進める。
暗黒物質と銀河内PeV陽子加速源の発見を目指すガンマ線望遠鏡CTAの高感度化

研究課題/研究課題番号：18KK0384 2019年 - 2021年

日本学術振興会科学研究費助成事業国際共同研究加速基金(国際共同研究強化(A)) 国際共同研究加速基金(国際共同研究強化(A))

奥村曉

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担当区分：研究代表者

配分額：15600000円（直接経費：12000000円、間接経費：3600000円）

2019年度までの別科研費で進めてきた、次世代ガンマ線望遠鏡、チェレンコフ望遠鏡アレイ（Cherenkov Telescope Array、CTA）の装置開発のさらなる発展のため、本科研費を使用して国際共同研究を遂行した。１つ目は、CTAの小口径望遠鏡の装置開発及び試験観測データの解析である。ドイツのマックスプランク核物理学研究所に約40日滞在し、同伴した大学院生と共に焦点面カメラのモジュール開発や、試験観測データの解析を行った。２つ目は同じくCTAの大口径望遠鏡の試験観測である。スペインのラパルマ島にある大口径望遠鏡の試作一号機を使い、かに星雲のガンマ線観測や望遠鏡運用の訓練を行った。本科研費を使用することで、日本国内のみでの研究では難しい、海外共同研究者との毎日の議論や実験、また観測サイトである天文台に実際に出向いて試験観測を達成することができた。また本研究費の人件費で技術補佐員を雇用したことにより、研究室内での様々な環境整備や実験品質の改善を図ることができた。
若干の日程変更はあったものの、ほぼ計画していた通りの渡航予定と研究内容で進めることができた。
2020年度はCOVID-19の影響のため、海外渡航が大きく制限を受けるはずである。そのため、3年間の予定で計画立案していた研究内容を4年間に延長することを検討している。2020年度中は本研究費での海外渡航は発生しないため、本研究費での直接の研究進展は見込まれない。一方で、海外共同研究者との共同研究は、電子メールやオンライン会議などのやりとりで可能な限り継続していく予定である。望遠鏡を使った観測が2021年以降に可能になるか、現時点では未定である。
銀河内PeVatron探査のための地上ガンマ線望遠鏡の開発

2017年4月 - 2019年3月

科学研究費補助金若手研究(A)

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担当区分：研究代表者
銀河内PeVatron探査のための地上ガンマ線望遠鏡の開発

研究課題/研究課題番号：17H04838 2017年4月 - 2019年3月

日本学術振興会科学研究費助成事業若手研究(A) 若手研究(A)

奥村曉

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担当区分：研究代表者資金種別：競争的資金

配分額：25610000円（直接経費：19700000円、間接経費：5910000円）

本研究の目的は、次世代の地上ガンマ線望遠鏡であるチェレンコフ望遠鏡アレイ（CTA）の小口径望遠鏡の焦点面カメラ開発を進め、試作カメラを望遠鏡焦点面に設置し大気チェレンコフ光の試験観測までを行うことである。2017～2018年度は海外の共同研究機関・共同研究者との連携で、試作カメラ2号機の製作を進めた。2016年度までに製作を完了していた1号機では光検出器として64チャンネルのマルチアノード型光電子増倍管を使用していたが、本研究の2号機ではこれを半導体光検出器に置き換え、また使用するトリガー回路や波形記録回路を最新版に変更した。本科研費を使用することで、これら回路の製作を行い、試作カメラ2号機で使用した。この試作機は海外との共同製作のため、ドイツのマックスプランク核物理学研究所の実験室に設置し、動作試験や性能評価を行った。2018年度途中で試験観測まで行う予定であったが、観測施設との調整のため、2019年度に持ち越しとなった。また同様のカメラを名古屋大学にも本研究で設置する予定のため、製作したうちの一部の電子回路モジュールは名古屋大学に納品して動作試験を行った。また、2017年度中の2号機の製作段階ではソフトウェアやデータ収集システムの試験ができなかったため、1号機の性能試験を進め、既存システムの問題点や改善点の洗い出しを行い、ハードウェア開発論文として執筆を進め、出版した。さらに、将来的にCTAで使用する半導体光検出器の選定や性能評価、また温度変動に対する補償、多チャンネルの半導体光検出器でのみ発生する隣接チャンネルへのオプティカルクロストークの測定とシミュレーションなどを始めて行った。
大面積の半導体光検出器アレイの製造費用を半額にする非球面レンズアレイの開発

研究課題/研究課題番号：16K13801 2016年4月 - 2018年3月

日本学術振興会科学研究費助成事業挑戦的萌芽研究挑戦的萌芽研究

奥村曉

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担当区分：研究代表者

配分額：3510000円（直接経費：2700000円、間接経費：810000円）

本研究では紫外透過ガラスを使ったレンズアレイを製作することで、多画素のアレイ型半導体光検出器の実効的な光検出効率を改善することを目指した。市販のアレイ型検出器は隣接する画素間に不感領域があるため、入射光子の約15%は損失する。レンズアレイを前面に取り付けることで不感領域に落ちる光を有感領域に導光し、半導体光検出器を使った地上ガンマ線望遠鏡のガンマ線検出能力を高めたり、光検出器の製造費用を低減することができる。我々はレンズアレイを試作し実際に光検出器に取り付けて性能評価を行った。0～70度の入射角度で相対的に10～20%の光検出効率の向上を確認した。
大面積の半導体光検出器アレイの製造費用を半額にする非球面レンズアレイの開発

2016年4月 - 2017年3月

科学研究費補助金挑戦的萌芽研究

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担当区分：研究代表者
大面積の半導体光検出器アレイの製造費用を半額にする非球面レンズアレイの開発

2016年4月 - 2017年3月

科学研究費助成事業挑戦的萌芽研究

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資金種別：競争的資金
大気チェレンコフ光の収集効率改善による次世代ガンマ線望遠鏡CTAの高感度化

研究課題/研究課題番号：25707017 2013年4月 - 2018年3月

日本学術振興会科学研究費助成事業若手研究(A) 若手研究(A)

奥村曉

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担当区分：研究代表者

配分額：22490000円（直接経費：17300000円、間接経費：5190000円）

チェレンコフ望遠鏡アレイ（Cherenkov Telescope Array、CTA）計画の大口径望遠鏡で使用するための集光装置の試作機を開発した。焦点面カメラの各画素に取り付ける光検出器で大気チェレンコフ光の集光能力を最大限に高め、検出ガンマ線のエネルギー閾値を下げるため、92～99% という高反射率の反射フィルムを開発し、集光装置の内壁をこれで製作した。試作機の相対的な陽極感度（大雑把に集光効率とみなせる）は重要な入射角度に対して 95～105% に達することがわかった。
大気チェレンコフ光の収集効率改善による次世代ガンマ線望遠鏡CTAの高感度化

2013年4月 - 2017年3月

科学研究費補助金若手研究(A)

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担当区分：研究代表者
大気チェレンコフ光の収集効率改善による次世代ガンマ線望遠鏡CTAの高感度化

2013年4月 - 2017年3月

日本学術振興会科学研究費助成事業若手研究(A)

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資金種別：競争的資金
CTA大口径望遠鏡アクティブ・ミラー制御（AMC）システムの開発

2013年4月 - 2016年3月

科学研究費補助金基盤研究(B)

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担当区分：研究分担者
世界最高の角度分解能を持つ光学望遠鏡の実現

2013年4月 - 2015年3月

科学研究費補助金挑戦的萌芽研究

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担当区分：研究代表者

▼全件表示

科研費の先頭へ▲

産業財産権 1

光学製品及び集光器

奥村曉, 西本圭司, 井上知晶

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出願番号：特願2021-031974 出願日：2021年

産業財産権の先頭へ▲

担当経験のある科目 (本学) 2

先端物理学特論

2020
物理実験学

2020

担当経験のある科目 (本学)の先頭へ▲