Updated on 2021/06/08

写真a

 
SHOJI Masafumi
 
Organization
Institute for Space-Earth Environmental Research Center for International Collaborative Research Designated assistant professor
Title
Designated assistant professor
External link

Degree 1

  1. 博士(工学) ( 2012.3   京都大学 ) 

Education 1

  1. Kyoto University   Graduate School, Division of Engineering

    2009.4 - 2012.3

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    Country: Japan

 

Papers 36

  1. Multi-Event Analysis of Plasma and Field Variations in Source of Stable Auroral Red (SAR) Arcs in Inner Magnetosphere During Non-Storm-Time Substorms

    Inaba Yudai, Shiokawa Kazuo, Oyama Shin-ichiro, Otsuka Yuichi, Connors Martin, Schofield Ian, Miyoshi Yoshizumi, Imajo Shun, Shinbori Atsuki, Gololobov Artem Yu, Kazama Yoichi, Wang Shiang-Yu, Tam Sunny W. Y., Chang Tzu-Fang, Wang Bo-Jhou, Asamura Kazushi, Yokota Shoichiro, Kasahara Satoshi, Keika Kunihiro, Hori Tomoaki, Matsuoka Ayako, Kasahara Yoshiya, Kumamoto Atsushi, Matsuda Shoya, Kasaba Yasumasa, Tsuchiya Fuminori, Shoji Masafumi, Kitahara Masahiro, Nakamura Satoko, Shinohara Iku, Spence Harlan E., Reeves Geoff D., Macdowall Robert J., Smith Charles W., Wygant John R., Bonnell John W.

    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Vol. 126 ( 4 )   2021.4

  2. Data-Driven Simulation of Rapid Flux Enhancement of Energetic Electrons With an Upper-Band Whistler Burst

    Saito S., Kurita S., Miyoshi Y., Kasahara S., Yokota S., Keika K., Hori T., Kasahara Y., Matsuda S., Shoji M., Nakamura S., Matsuoka A., Imajo S., Shinohara I

    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Vol. 126 ( 4 )   2021.4

  3. Extremely Collimated Electron Beams in the High Latitude Magnetosphere Observed by Arase

    Kazama Y., Kojima H., Miyoshi Y., Kasahara Y., Kasahara S., Usui H., Wang B-J, Wang S-Y, Tam S. W. Y., Chang T-F, Asamura K., Kasaba Y., Matsuda S., Shoji M., Matsuoka A., Teramoto M., Takashima T., Shinohara I

    GEOPHYSICAL RESEARCH LETTERS   Vol. 48 ( 5 )   2021.3

  4. Multievent Study of Characteristics and Propagation of Naturally Occurring ELF/VLF Waves Using High-Latitude Ground Observations and Conjunctions With the Arase Satellite

    Martinez-Calderon C., Katoh Y., Manninen J., Santolik O., Kasahara Y., Matsuda S., Kumamoto A., Tsuchiya F., Matsuoka A., Shoji M., Teramoto M., Shinohara I, Shiokawa K., Miyoshi Y.

    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Vol. 126 ( 2 )   2021.2

  5. Active auroral arc powered by accelerated electrons from very high altitudes

    Imajo Shun, Miyoshi Yoshizumi, Kazama Yoichi, Asamura Kazushi, Shinohara Iku, Shiokawa Kazuo, Kasahara Yoshiya, Kasaba Yasumasa, Matsuoka Ayako, Wang Shiang-Yu, Tam Sunny W. Y., Chang Tzu-Fang, Wang Bo-Jhou, Angelopoulos Vassilis, Jun Chae-Woo, Shoji Masafumi, Nakamura Satoko, Kitahara Masahiro, Teramoto Mariko, Kurita Satoshi, Hori Tomoaki

    SCIENTIFIC REPORTS   Vol. 11 ( 1 )   2021.1

  6. STATISTICAL PROPERTIES OF AURORAL KILOMETER RADIATION: BASED ON ERG (ARASE) SATELLITE DATA

    Kolpak V. I, Mogilevsky M. M., Chugunin D. V, Chernyshov A. A., Moiseenko I. L., Kumamoto A., Tsuchiya F., Kasahara Y., Shoji M., Miyoshi Y., Shinohara I

    SOLAR-TERRESTRIAL PHYSICS   Vol. 7 ( 1 ) page: 11 - 16   2021

  7. Time gap between the onset and diagnosis in Werner syndrome: a nationwide survey and the 2020 registry in Japan

    Koshizaka Masaya, Maezawa Yoshiro, Maeda Yukari, Shoji Mayumi f, Kato Hisaya, Kaneko Hiyori, Ishikawa Takahiro, Kinoshita Daisuke, Kobayashi Kazuki, Kawashima Junji, Sekiguchi Akiko, Motegi Sei-ichiro, Nakagami Hironori, Yamada Yoshihiko, Tsukamoto Shinji, Taniguchi Akira, Sugimoto Ken, Shoda Yukiko, Hashimoto Kunihiko, Yoshimura Toru, Suzuki Daisuke, Kuzuya Masafumi, Takemoto Minoru, Yokote Koutaro

    AGING-US   Vol. 12 ( 24 ) page: 24940 - 24956   2020.12

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  8. Pitch-Angle Scattering of Inner Magnetospheric Electrons Caused by ECH Waves Obtained With the Arase Satellite

    Fukizawa M., Sakanoi T., Miyoshi Y., Kazama Y., Katoh Y., Kasahara Y., Matsuda S., Matsuoka A., Kurita S., Shoji M., Teramoto M., Imajo S., Sinohara I., Wang S. -Y., Tam S. W. -Y., Chang T. -F., Wang B. -J., Jun C. -W.

    GEOPHYSICAL RESEARCH LETTERS   Vol. 47 ( 23 )   2020.11

  9. An Ephemeral Red Arc Appeared at 68 degrees MLat at a Pseudo Breakup During Geomagnetically Quiet Conditions

    Oyama S., Shinbori A., Ogawa Y., Kellinsalmi M., Raita T., Aikio A., Vanhamaeki H., Shiokawa K., Virtanen I., Cai L., Workayehu A. B., Pedersen M., Kauristie K., Tsuda T. T., Kozelov B., Demekhov A., Yahnin A., Tsuchiya F., Kumamoto A., Kasahara Y., Matsuoka A., Shoji M., Teramoto M., Lester M.

    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Vol. 125 ( 10 )   2020.10

  10. Plasma and Field Observations in the Magnetospheric Source Region of a Stable Auroral Red (SAR) Arc by the Arase Satellite on 28 March 2017

    Inaba Yudai, Shiokawa Kazuo, Oyama Shin-ichiro, Otsuka Yuichi, Oksanen Arto, Shinbori Atsuki, Gololobov Artem Yu, Miyoshi Yoshizumi, Kazama Yoichi, Wang Shiang-Yu, Tam Sunny W. Y., Chang Tzu-Fang, Wang Bo-Jhou, Yokota Shoichiro, Kasahara Satoshi, Keika Kunihiro, Hori Tomoaki, Matsuoka Ayako, Kasahara Yoshiya, Kumamoto Atsushi, Kasaba Yasumasa, Tsuchiya Fuminori, Shoji Masafumi, Shinohara Iku, Stolle Claudia

    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Vol. 125 ( 10 )   2020.10

  11. Plasma Waves Causing Relativistic Electron Precipitation Events at International Space Station: Lessons From Conjunction Observations With Arase Satellite

    Kataoka Ryuho, Asaoka Yoichi, Torii Shoji, Nakahira Satoshi, Ueno Haruka, Miyake Shoko, Miyoshi Yoshizumi, Kurita Satoshi, Shoji Masafumi, Kasahara Yoshiya, Ozaki Mitsunori, Matsuda Shoya, Matsuoka Ayako, Kasaba Yasumasa, Shinohara Iku, Hosokawa Keisuke, Uchida Herbert Akihito, Murase Kiyoka, Tanaka Yoshimasa

    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Vol. 125 ( 9 )   2020.9

  12. Spatial Extent of Quasiperiodic Emissions Simultaneously Observed by Arase and Van Allen Probes on 29 November 2018

    Martinez-Calderon C., Nemec F., Katoh Y., Shiokawa K., Kletzing C., Hospodarsky G., Santolik O., Kasahara Y., Matsuda S., Kumamoto A., Tsuchiya F., Matsuoka A., Shoji M., Teramoto M., Kurita S., Miyoshi Y., Ozaki M., Nishitani N., Oinats A. V., Kurkin V. I.

    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Vol. 125 ( 9 )   2020.9

  13. Oxygen torus and its coincidence with EMIC wave in the deep inner magnetosphere: Van Allen Probe B and Arase observations

    Nose M., Matsuoka A., Kumamoto A., Kasahara Y., Teramoto M., Kurita S., Goldstein J., Kistler L. M., Singh S., Gololobov A., Shiokawa K., Imajo S., Oimatsu S., Yamamoto K., Obana Y., Shoji M., Tsuchiya F., Shinonara I, Miyoshi Y., Kurth W. S., Kletzing C. A., Smith C. W., MacDowal R. J., Spence H., Reeves G. D.

    EARTH PLANETS AND SPACE   Vol. 72 ( 1 )   2020.8

  14. Arase Observation of the Source Region of Auroral Arcs and Diffuse Auroras in the Inner Magnetosphere

    Shiokawa K., Nose M., Imajo S., Tanaka Y. -M., Miyoshi Y., Hosokawa K., Connors M., Engebretson M., Kazama Y., Wang S. -Y., Tam S. W. Y., Chang Tzu-Fang, Wang Bo-Jhou, Asamura K., Kasahara S., Yokota S., Hori T., Keika K., Kasaba Y., Shoji M., Kasahara Y., Matsuoka A., Shinohara I.

    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Vol. 125 ( 8 )   2020.8

  15. A Multi-Instrument Approach to Determining the Source-Region Extent of EEP-Driving EMIC Waves

    Hendry A. T., Santolik O., Miyoshi Y., Matsuoka A., Rodger C. J., Clilverd M. A., Kletzing C. A., Shoji M., Shinohara I

    GEOPHYSICAL RESEARCH LETTERS   Vol. 47 ( 7 )   2020.4

  16. Comprehensive Observations of Substorm-Enhanced Plasmaspheric Hiss Generation, Propagation, and Dissipation

    Liu Nigang, Su Zhenpeng, Gao Zhonglei, Zheng Huinan, Wang Yuming, Wang Shui, Miyoshi Yoshizumi, Shinohara Iku, Kasahara Yoshiya, Tsuchiya Fuminori, Kumamoto Atsushi, Matsuda Shoya, Shoji Masafumi, Mitani Takefumi, Takashima Takeshi, Kazama Yoichi, Wang Bo-Jhou, Wang Shiang-Yu, Jun Chae-Woo, Chang Tzu-Fang, Tam Sunny W. Y., Kasahara Satoshi, Yokota Shoichiro, Keika Kunihiro, Hori Tomoaki, Matsuoka Ayako

    GEOPHYSICAL RESEARCH LETTERS   Vol. 47 ( 2 )   2020.1

  17. Conjugate Observations of Dayside and Nightside VLF Chorus and QP Emissions Between Arase (ERG) and Kannuslehto, Finland

    Martinez-Calderon Claudia, Katoh Yuto, Manninen Jyrki, Kasahara Yoshiya, Matsuda Shoya, Kumamoto Atsushi, Tsuchiya Fuminori, Matsuoka Ayako, Shoji Masafumi, Teramoto Mariko, Shinohara Iku, Shiokawa Kazuo, Miyoshi Yoshizumi

    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Vol. 125 ( 1 )   2020.1

  18. Remote Detection of Drift Resonance Between Energetic Electrons and Ultralow Frequency Waves: Multisatellite Coordinated Observation by Arase and Van Allen Probes

    Teramoto M., Hori T., Saito S., Miyoshi Y., Kurita S., Higashio N., Matsuoka A., Kasahara Y., Kasaba Y., Takashima T., Nomura R., Nose M., Fujimoto A., Tanaka Y. -M., Shoji M., Tsugawa Y., Shinohara M., Shinohara I., Blake J. B., Fennell J. F., Claudepierre S. G., Turner D. L., Kletzing C. A., Sormakov D., Troshichev O.

    GEOPHYSICAL RESEARCH LETTERS   Vol. 46 ( 21 ) page: 11642 - 11651   2019.11

  19. EMIC Waves Converted From Equatorial Noise Due to M/Q=2 Ions in the Plasmasphere: Observations From Van Allen Probes and Arase

    Miyoshi Y., Matsuda S., Kurita S., Nomura K., Keika K., Shoji M., Kitamura N., Kasahara Y., Matsuoka A., Shinohara I., Shiokawa K., Machida S., Santolik O., Boardsen S. A., Horne R. B., Wygant J. F.

    GEOPHYSICAL RESEARCH LETTERS   Vol. 46 ( 11 ) page: 5662 - 5669   2019.6

  20. The Space Physics Environment Data Analysis System (SPEDAS)

    Angelopoulos V., Cruce P., Drozdov A., Grimes E. W., Hatzigeorgiu N., King D. A., Larson D., Lewis J. W., McTiernan J. M., Roberts D. A., Russell C. L., Hori T., Kasahara Y., Kumamoto A., Matsuoka A., Miyashita Y., Miyoshi Y., Shinohara I., Teramoto M., Faden J. B., Halford A. J., McCarthy M., Millan R. M., Sample J. G., Smith D. M., Woodger L. A., Masson A., Narock A. A., Asamura K., Chang T. F., Chiang C. -Y., Kazama Y., Keika K., Matsuda S., Segawa T., Seki K., Shoji M., Tam S. W. Y., Umemura N., Wang B. -J., Wang S. -Y., Redmon R., Rodriguez J. V., Singer H. J., Vandegriff J., Abe S., Nose M., Shinbori A., Tanaka Y. -M., UeNo S., Andersson L., Dunn P., Fowler C., Halekas J. S., Hara T., Harada Y., Lee C. O., Lillis R., Mitchell D. L., Argall M. R., Bromund K., Burch J. L., Cohen I. J., Galloy M., Giles B., Jaynes A. N., Le Contel O., Oka M., Phan T. D., Walsh B. M., Westlake J., Wilder F. D., Bale S. D., Livi R., Pulupa M., Whittlesey P., DeWolfe A., Harter B., Lucas E., Auster U., Bonnell J. W., Cully C. M., Donovan E., Ergun R. E., Frey H. U., Jackel B., Keiling A., Korth H., McFadden J. P., Nishimura Y., Plaschke F., Robert P., Turner D. L., Weygand J. M., Candey R. M., Johnson R. C., Kovalick T., Liu M. H., McGuire R. E., Breneman A., Kersten K., Schroeder P.

    SPACE SCIENCE REVIEWS   Vol. 215 ( 1 )   2019.2

  21. Instantaneous Frequency Analysis on Nonlinear EMIC Emissions: Arase Observation

    Shoji Masafumi, Miyoshi Yoshizumi, Omura Yoshiharu, Kistler Lynn M., Kasaba Yasumasa, Matsuda Shoya, Kasahara Yoshiya, Matsuoka Ayako, Nomura Reiko, Ishisaka Keigo, Kumamoto Atsushi, Tsuchiya Fuminori, Yagitani Satoshi, Teramoto Mariko, Asamura Kazushi, Takashima Takeshi, Shinohara Iku

    GEOPHYSICAL RESEARCH LETTERS   Vol. 45 ( 24 ) page: 13199 - 13205   2018.12

  22. Temporal and Spatial Correspondence of Pc1/EMIC Waves and Relativistic Electron Precipitations Observed With Ground-Based Multi-Instruments on 27 March 2017

    Hirai A., Tsuchiya F., Obara T., Kasaba Y., Katoh Y., Misawa H., Shiokawa K., Miyoshi Y., Kurita S., Matsuda S., Connors M., Nagatsuma T., Sakaguchi K., Kasahara Y., Kumamoto A., Matsuoka A., Shoji M., Shinohara I., Albert J. M.

    GEOPHYSICAL RESEARCH LETTERS   Vol. 45 ( 24 ) page: 13182 - 13191   2018.12

  23. Energetic Electron Precipitation Associated With Pulsating Aurora Observed by VLF Radio Propagation During the Recovery Phase of a Substorm on 27 March 2017

    Tsuchiya F., Hirai A., Obara T., Misawa H., Kurita S., Miyoshi Y., Shiokawa K., Connors M., Ozaki M., Kasahara Y., Kumamoto A., Kasaba Y., Matsuoka A., Shoji M., Shinohara I.

    GEOPHYSICAL RESEARCH LETTERS   Vol. 45 ( 23 ) page: 12651 - 12660   2018.12

  24. Spatial Distribution of Fine-Structured and Unstructured EMIC Waves Observed by The Arase Satellite

    Matsuda S., Kasahara Y., Miyoshi Y., Nomura R., Shoji M., Matsuoka A., Kasaba Y., Kurita S., Teramoto M., Ishisaka K.

    GEOPHYSICAL RESEARCH LETTERS   Vol. 45 ( 21 ) page: 11530 - 11538   2018.11

  25. Density Depletions Associated With Enhancements of Electron Cyclotron Harmonic Emissions: An ERG Observation

    Kazama Y., Kojima H., Miyoshi Y., Kasahara Y., Usui H., Wang B. -J., Wang S. -Y., Tam S. W. Y., Chang T. -F., Ho P. T. P., Asamura K., Kumamoto A., Tsuchiya F., Kasaba Y., Matsuda S., Shoji M., Matsuoka A., Teramoto M., Takashima T., Shinohara I.

    GEOPHYSICAL RESEARCH LETTERS   Vol. 45 ( 19 ) page: 10075 - 10083   2018.10

  26. Longitudinal Structure of Oxygen Torus in the Inner Magnetosphere: Simultaneous Observations by Arase and Van Allen Probe A

    Nose M., Matsuoka A., Kumamoto A., Kasahara Y., Goldstein J., Teramoto M., Tsuchiya F., Matsuda S., Shoji M., Imajo S., Oimatsu S., Yamamoto K., Obana Y., Nomura R., Fujimoto A., Shinohara I., Miyoshi Y., Kurth W. S., Kletzing C. A., Smith C. W., MacDowall R. J.

    GEOPHYSICAL RESEARCH LETTERS   Vol. 45 ( 19 ) page: 10177 - 10184   2018.10

  27. Direct measurements of two-way wave-particle energy transfer in a collisionless space plasma

    Kitamura N., Kitahara M., Shoji M., Miyoshi Y., Hasegawa H., Nakamura S., Katoh Y., Saito Y., Yokota S., Gershman D. J., Vinas A. F., Giles B. L., Moore T. E., Paterson W. R., Pollock C. J., Russell C. T., Strangeway R. J., Fuselier S. A., Burch J. L.

    SCIENCE   Vol. 361 ( 6406 ) page: 1000 - 1003   2018.9

  28. Impulsively Excited Nightside Ultralow Frequency Waves Simultaneously Observed on and off the Magnetic Equator

    Takahashi Kazue, Denton Richard E., Motoba Tetsuo, Matsuoka Ayako, Kasaba Yasumasa, Kasahara Yoshiya, Teramoto Mariko, Shoji Masafumi, Takahashi Naoko, Miyoshi Yoshizumi, Nose Masahito, Kumamoto Atsushi, Tsuchiya Fuminori, Redmon Robert J., Rodriguez Juan V.

    GEOPHYSICAL RESEARCH LETTERS   Vol. 45 ( 16 ) page: 7918 - 7926   2018.8

  29. The ERG Science Center

    Miyoshi Yoshizumi, Hori Tomoaki, Shoji Masafumi, Teramoto Mariko, Chang T. F., Segawa Tomonori, Umemura Norio, Matsuda Shoya, Kurita Satoshi, Keika Kunihiro, Miyashita Yukinaga, Seki Kanako, Tanaka Yoshimasa, Nishitani Nozomu, Kasahara Satoshi, Yokota Shoichiro, Matsuoka Ayako, Kasahara Yoshiya, Asamura Kazushi, Takashima Takeshi, Shinohara Iku

    EARTH PLANETS AND SPACE   Vol. 70   2018.6

  30. The Plasma Wave Experiment (PWE) on board the Arase (ERG) satellite

    Kasahara Yoshiya, Kasaba Yasumasa, Kojima Hirotsugu, Yagitani Satoshi, Ishisaka Keigo, Kumamoto Atsushi, Tsuchiya Fuminori, Ozaki Mitsunori, Matsuda Shoya, Imachi Tomohiko, Miyoshi Yoshizumi, Hikishima Mitsuru, Katoh Yuto, Ota Mamoru, Shoji Masafumi, Matsuoka Ayako, Shinohara Iku

    EARTH PLANETS AND SPACE   Vol. 70   2018.5

  31. High Frequency Analyzer (HFA) of Plasma Wave Experiment (PWE) onboard the Arase spacecraft

    Kumamoto Atsushi, Tsuchiya Fuminori, Kasahara Yoshiya, Kasaba Yasumasa, Kojima Hirotsugu, Yagitani Satoshi, Ishisaka Keigo, Imachi Tomohiko, Ozaki Mitsunori, Matsuda Shoya, Shoji Masafumi, Matsuoka Aayako, Katoh Yuto, Miyoshi Yoshizumi, Obara Takahiro

    EARTH PLANETS AND SPACE   Vol. 70   2018.5

  32. Theory, modeling, and integrated studies in the Arase (ERG) project

    Seki Kanako, Miyoshi Yoshizumi, Ebihara Yusuke, Katoh Yuto, Amano Takanobu, Saito Shinji, Shoji Masafumi, Nakamizo Aoi, Keika Kunihiro, Hori Tomoaki, Nakano Shin'ya, Watanabe Shigeto, Kamiya Kei, Takahashi Naoko, Omura Yoshiharu, Nose Masahito, Fok Mei-Ching, Tanaka Takashi, Ieda Akimasa, Yoshikawa Akimasa

    EARTH PLANETS AND SPACE   Vol. 70   2018.2

  33. Instantaneous Frequency Analysis on Nonlinear EMIC Emissions: Arase Observation

    Shoji Masafumi, Miyoshi Yoshizumi, Omura Yoshiharu, Kasaba Yasumasa, Ishisaka Keigo, Matsuda Shoya, Kasahara Yoshiya, Yagitani Satoshi, Matsuoka Ayako, Teramoto Mariko, Takashima Takeshi, Shinohara Iku

    2018 2ND URSI ATLANTIC RADIO SCIENCE MEETING (AT-RASC)     2018

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  34. Initial results of EMIC observation by MGF/Arase

    Nomura R., Matsuoka A., Teramoto M., Miyoshi Y., Matsuda S., Kurita S., Keika K., Nose M., Shoji M., Fujimoto A., Shinohara M., Tanaka Y., Kasahara Y., Kasaba Y., Ishisaka K.

    2018 2ND URSI ATLANTIC RADIO SCIENCE MEETING (AT-RASC)     2018

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  35. Wire Probe Antenna (WPT) and Electric Field Detector (EFD) of Plasma Wave Experiment (PWE) aboard the Arase satellite: specifications and initial evaluation results

    Kasaba Yasumasa, Ishisaka Keigo, Kasahara Yoshiya, Imachi Tomohiko, Yagitani Satoshi, Kojima Hirotsugu, Matsuda Shoya, Shoji Masafumi, Kurita Satoshi, Hori Tomoaki, Shinbori Atsuki, Teramoto Mariko, Miyoshi Yoshizumi, Nakagawa Tomoko, Takahashi Naoko, Nishimura Yukitoshi, Matsuoka Ayako, Kumamoto Atsushi, Tsuchiya Fuminori, Nomura Reiko

    EARTH PLANETS AND SPACE   Vol. 69   2017.12

  36. Visualization tool for three-dimensional plasma velocity distributions (ISEE_3D) as a plug-in for SPEDAS

    Keika Kunihiro, Miyoshi Yoshizumi, Machida Shinobu, Ieda Akimasa, Seki Kanako, Hori Tomoaki, Miyashita Yukinaga, Shoji Masafumi, Shinohara Iku, Angelopoulos Vassilis, Lewis Jim W., Flores Aaron

    EARTH PLANETS AND SPACE   Vol. 69   2017.12

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MISC 20

  1. Impulsively Excited Nightside Ultralow Frequency Waves Simultaneously Observed on and off the Magnetic Equator Reviewed

    Takahashi Kazue, Denton Richard E., Motoba Tetsuo, Matsuoka Ayako, Kasaba Yasumasa, Kasahara Yoshiya, Teramoto Mariko, Shoji Masafumi, Takahashi Naoko, Miyoshi Yoshizumi, Nose Masahito, Kumamoto Atsushi, Tsuchiya Fuminori, Redmon Robert J., Rodriguez Juan V.

    GEOPHYSICAL RESEARCH LETTERS   Vol. 45 ( 16 ) page: 7918-7926   2018.8

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    Language:English  

    DOI: 10.1029/2018GL078731

    Web of Science

  2. The ERG Science Center Reviewed

    Miyoshi Yoshizumi, Hori Tomoaki, Shoji Masafumi, Teramoto Mariko, Chang T. F., Segawa Tomonori, Umemura Norio, Matsuda Shoya, Kurita Satoshi, Keika Kunihiro, Miyashita Yukinaga, Seki Kanako, Tanaka Yoshimasa, Nishitani Nozomu, Kasahara Satoshi, Yokota Shoichiro, Matsuoka Ayako, Kasahara Yoshiya, Asamura Kazushi, Takashima Takeshi, Shinohara Iku

    EARTH PLANETS AND SPACE   Vol. 70   2018.6

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  3. The Plasma Wave Experiment (PWE) on board the Arase (ERG) satellite Reviewed

    Kasahara Yoshiya, Kasaba Yasumasa, Kojima Hirotsugu, Yagitani Satoshi, Ishisaka Keigo, Kumamoto Atsushi, Tsuchiya Fuminori, Ozaki Mitsunori, Matsuda Shoya, Imachi Tomohiko, Miyoshi Yoshizumi, Hikishima Mitsuru, Katoh Yuto, Ota Mamoru, Shoji Masafumi, Matsuoka Ayako, Shinohara Iku

    EARTH PLANETS AND SPACE   Vol. 70   2018.5

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  4. High Frequency Analyzer (HFA) of Plasma Wave Experiment (PWE) onboard the Arase spacecraft Reviewed

    Kumamoto Atsushi, Tsuchiya Fuminori, Kasahara Yoshiya, Kasaba Yasumasa, Kojima Hirotsugu, Yagitani Satoshi, Ishisaka Keigo, Imachi Tomohiko, Ozaki Mitsunori, Matsuda Shoya, Shoji Masafumi, Matsuoka Aayako, Katoh Yuto, Miyoshi Yoshizumi, Obara Takahiro

    EARTH PLANETS AND SPACE   Vol. 70   2018.5

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  5. Theory, modeling, and integrated studies in the Arase (ERG) project Reviewed

    Seki Kanako, Miyoshi Yoshizumi, Ebihara Yusuke, Katoh Yuto, Amano Takanobu, Saito Shinji, Shoji Masafumi, Nakamizo Aoi, Keika Kunihiro, Hori Tomoaki, Nakano Shin'ya, Watanabe Shigeto, Kamiya Kei, Takahashi Naoko, Omura Yoshiharu, Nose Masahito, Fok Mei-Ching, Tanaka Takashi, Ieda Akimasa, Yoshikawa Akimasa

    EARTH PLANETS AND SPACE   Vol. 70   2018.2

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  6. Wire Probe Antenna (WPT) and Electric Field Detector (EFD) of Plasma Wave Experiment (PWE) aboard the Arase satellite: specifications and initial evaluation results Reviewed

    Kasaba Yasumasa, Ishisaka Keigo, Kasahara Yoshiya, Imachi Tomohiko, Yagitani Satoshi, Kojima Hirotsugu, Matsuda Shoya, Shoji Masafumi, Kurita Satoshi, Hori Tomoaki, Shinbori Atsuki, Teramoto Mariko, Miyoshi Yoshizumi, Nakagawa Tomoko, Takahashi Naoko, Nishimura Yukitoshi, Matsuoka Ayako, Kumamoto Atsushi, Tsuchiya Fuminori, Nomura Reiko

    EARTH PLANETS AND SPACE   Vol. 69   2017.12

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  7. Visualization tool for three-dimensional plasma velocity distributions (ISEE_3D) as a plug-in for SPEDAS Reviewed

    Keika Kunihiro, Miyoshi Yoshizumi, Machida Shinobu, Ieda Akimasa, Seki Kanako, Hori Tomoaki, Miyashita Yukinaga, Shoji Masafumi, Shinohara Iku, Angelopoulos Vassilis, Lewis Jim W., Flores Aaron

    EARTH PLANETS AND SPACE   Vol. 69   2017.12

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  8. Nonlinear Generation Mechanism of EMIC Falling Tone Emissions Reviewed

    Shoji Masafumi, Omura Yoshiharu

    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Vol. 122 ( 10 ) page: 9924-9933   2017.10

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    Language:English  

    DOI: 10.1002/2017JA023883

    Web of Science

  9. Ion hole formation and nonlinear generation of electromagnetic ion cyclotron waves: THEMIS observations Reviewed

    Shoji Masafumi, Miyoshi Yoshizumi, Katoh Yuto, Keika Kunihiro, Angelopoulos Vassilis, Kasahara Satoshi, Asamura Kazushi, Nakamura Satoko, Omura Yoshiharu

    GEOPHYSICAL RESEARCH LETTERS   Vol. 44 ( 17 ) page: 8730-8738   2017.9

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    Language:English  

    DOI: 10.1002/2017GL074254

    Web of Science

  10. Electromagnetic ion cyclotron waves in the Earth's magnetosphere with a kappa-Maxwellian particle distribution Reviewed

    Sugiyama Hajime, Singh Satyavir, Omura Yoshiharu, Shoji Masafumi, Nunn David, Summers Danny

    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Vol. 120 ( 10 ) page: 8426-8439   2015.10

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    Language:English  

    DOI: 10.1002/2015JA021346

    Web of Science

  11. Subpacket structures in EMIC rising tone emissions observed by the THEMIS probes Reviewed

    Nakamura Satoko, Omura Yoshiharu, Shoji Masafumi, Nose Masahito, Summers Danny, Angelopoulos Vassilis

    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Vol. 120 ( 9 ) page: 7318-7330   2015.9

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    Language:English  

    DOI: 10.1002/2014JA020764

    Web of Science

  12. Spectrum characteristics of electromagnetic ion cyclotron triggered emissions and associated energetic proton dynamics Reviewed

    Shoji Masafumi, Omura Yoshiharu

    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Vol. 119 ( 5 ) page: 3480-3489   2014.5

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    DOI: 10.1002/2013JA019695

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  13. Electromagnetic ion cyclotron rising tone emissions observed by THEMIS probes outside the plasmapause Reviewed

    Nakamura Satoko, Omura Yoshiharu, Machida Shinobu, Shoji Masafumi, Nose Masahito, Angelopoulos Vassilis

    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Vol. 119 ( 3 ) page: 1874-1886   2014.3

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    DOI: 10.1002/2013JA019146

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  14. SPECTRUM CHARACTERISTICS OF ELECTROMAGNETIC ION CYCLOTRON TRIGGERED EMISSIONS AND ASSOCIATED ENERGETIC PROTON DYNAMICS Reviewed

    Shoji Masafumi, Omura Yoshiharu

    2014 XXXITH URSI GENERAL ASSEMBLY AND SCIENTIFIC SYMPOSIUM (URSI GASS)     page: .   2014

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  15. Triggering process of electromagnetic ion cyclotron rising tone emissions in the inner magnetosphere Reviewed

    Shoji Masafumi, Omura Yoshiharu

    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Vol. 118 ( 9 ) page: 5553-5561   2013.9

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    DOI: 10.1002/jgra.50523

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  16. Precipitation of highly energetic protons by helium branch electromagnetic ion cyclotron triggered emissions Reviewed

    Shoji Masafumi, Omura Yoshiharu

    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Vol. 117   2012.12

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    DOI: 10.1029/2012JA017933

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  17. Multidimensional nonlinear mirror-mode structures in the Earth's magnetosheath Reviewed

    Shoji Masafumi, Omura Yoshiharu, Lee Lou-Chuang

    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Vol. 117   2012.8

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    DOI: 10.1029/2011JA017420

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  18. Electromagnetic ion cyclotron waves in the helium branch induced by multiple electromagnetic ion cyclotron triggered emissions Reviewed

    Shoji Masafumi, Omura Yoshiharu, Grison Benjamin, Pickett Jolene, Dandouras Iannis, Engebretson Mark

    GEOPHYSICAL RESEARCH LETTERS   Vol. 38   2011.9

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    DOI: 10.1029/2011GL048427

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  19. Simulation of electromagnetic ion cyclotron triggered emissions in the Earth's inner magnetosphere Reviewed

    Shoji Masafumi, Omura Yoshiharu

    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Vol. 116   2011.5

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    DOI: 10.1029/2010JA016351

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  20. Mirror instability and L-mode electromagnetic ion cyclotron instability: Competition in the Earth's magnetosheath Reviewed

    Shoji Masafumi, Omura Yoshiharu, Tsurutani Bruce T., Verkhoglyadova Olga P., Lembege Bertrand

    JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   Vol. 114   2009.10

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    DOI: 10.1029/2008JA014038

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KAKENHI (Grants-in-Aid for Scientific Research) 3

  1. Observational confirmation of acceleration and scattering mechanisms of electrons by electromagnetic cyclotron waves in the Earth's radiation belts

    Grant number:17H01163  2017.4 - 2021.3

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    Authorship:Coinvestigator(s) 

  2. Study on Ion cyclotron wave particle interaction in multi-dimensional space

    Grant number:17K14402  2017.4 - 2020.3

    Shoji Masafumi

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    Authorship:Principal investigator 

    Grant amount:\4160000 ( Direct Cost: \3200000 、 Indirect Cost:\960000 )

    In the inner magnetosphere, a few Hz frequency wave, so-called electromagnetic ion cycrotron emission, with frequency drift causes drastic change of the relativistic electron and highly energetic proton distributions. In-situ energy transfer between the wave and plasma particle which is theoretically suggested has not been detected. We performed real-scale simulations to find the condition of the nonlinear wave generation and spatial and temporal distribution, collaborating with the spacecraft observation analysis. The modulation of the energetic ion distribution function and resulting contribution to the magnetospheric plasma dynamics by the electromagnetic ion cyclotron waves are also studied.

  3. Generation of cosmic-ray protons at collisionless shocks via hybrid particle-in-cell simulations

    Grant number:26287041  2014.4 - 2018.3

    UMEDA TAKAYUKI

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    Authorship:Collaborating Investigator(s) (not designated on Grant-in-Aid) 

    The computational speed of the particle-in-cell-type plasma simulation codes is accelerated by using the counting sort algorithm and the array-particle data structure. Large-scale two-dimensional particle-in-cell simulations are carried out by using the improved code for studying non-stationarity of perpendicular shocks called the reformation. The result implies that the existence of the reformation is controlled by types of micro-instabilities at the shock transition layer.
    One- and two-dimensional particle simulations are also carried out on the development of a large-amplitude whistler-mode waves in the shock transition layer. Relativistic electron acceleration is found in the 1D run. On the other hand, a rapid decay of whistler-mode waves through a new instability is found in the 2D run, which suppress the relativistic electron acceleration.