Updated on 2022/04/12

写真a

 
ISHIBASHI Kazunori Bish
 
Organization
Graduate School of Science Lecturer
Graduate School
Graduate School of Science
Undergraduate School
School of Science Department of Physics
Title
Lecturer

Degree 3

  1. Ph.D. in Astrophysics ( 1999.11   University of Minnesota at Twin Cities ) 

  2. Master of Science in Astrophysics ( 1998   University of Minnesota at Twin Cities ) 

  3. Bachelor of Science in Astrophysics ( 1994.5   University of Oklahoma, Norman ) 

Research Interests 5

  1. Space-borne Experiment

  2. Observational Astrophysics

  3. Stellar Astrophysics

  4. Astrophysics

  5. High-Energy Astrophysics

Research Areas 1

  1. Natural Science / Astronomy  / Observational Astrophysics

Current Research Project and SDGs 3

  1. HST/STIS Observations of Eta Carinae

  2. IRSF/SIRIUS Monitoring of Eta Carinae

  3. Stellar Evolution of VY CMa with HST/STIS

Research History 3

  1. NorthWest Research Associates   CoRA   Research Associate

    2007.2 - 2009.1

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    Country:United States

  2. Massachusetts Institute of Technology   Chandra X-ray Center   Research Scientist

    2001.11 - 2007.1

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    Country:United States

  3. NASA's Goddard Space Flight Center   Code 21   NRC fellow

    2000.1 - 2001.10

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    Country:United States

    Notes:National Academy of Science NRC Fellowship

Education 2

  1. University of Minnesota at Twin Cities   Department of Astronomy   Astrophysics

    1994.8 - 1999.11

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    Country: United States

  2. University of Oklahoma,Norman   School of Physics and Astronomy   Astrophysics

    1991.1 - 1994.5

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    Country: United States

 

Papers 9

  1. In-orbit performance of the soft X-ray imaging system aboard Hitomi (ASTRO-H)*

    Hiroshi Nakajima, Yoshitomo Maeda, Hiroyuki Uchida, Takaaki Tanaka, Hiroshi Tsunemi, Kiyoshi Hayashida, Takeshi G Tsuru, Tadayasu Dotani, Ryo Nagino, Shota Inoue, Masanobu Ozaki, Hiroshi Tomida, Chikara Natsukari, Shutaro Ueda, Koji Mori, Makoto Yamauchi, Isamu Hatsukade, Yusuke Nishioka, Miho Sakata, Tatsuhiko Beppu, Daigo Honda, Masayoshi Nobukawa, Junko S Hiraga, Takayoshi Kohmura, Hiroshi Murakami, Kumiko K Nobukawa, Aya Bamba, John P Doty, Ryo Iizuka, Toshiki Sato, Sho Kurashima, Nozomi Nakaniwa, Ryota Asai, Manadu Ishida, Hideyuki Mori, Yang Soong, Takashi Okajima, Peter Serlemitsos, Yuzuru Tawara, Ikuyuki Mitsuishi, Kazunori Ishibashi, Keisuke Tamura, Takayuki Hayashi, Akihiro Furuzawa, Satoshi Sugita, Takuya Miyazawa, Hisamitsu Awaki, Eric D Miller, Hiroya Yamaguchi

    Publications of the Astronomical Society of Japan   Vol. 70 ( 2 )   2018.3

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    Publisher:Oxford University Press (OUP)  

    DOI: 10.1093/pasj/psx116

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  2. On-ground calibration of the Hitomi Hard X-ray Telescopes

    Hideyuki Mori, Takuya Miyazawa, Hisamitsu Awaki, Hironori Matsumoto, Yasunori Babazaki, Ayako Bandai, Tadatsugu Demoto, Akihiro Furuzawa, Yoshito Haba, Takayuki Hayashi, Ryo Iizuka, Kazunori Ishibashi, Manabu Ishida, Naoki Ishida, Masayuki Itoh, Toshihiro Iwase, Hiroyoshi Kato, Hiroaki Kobayashi, Tatsuro Kosaka, Hideyo Kunieda

    Journal of Astronomical Telescopes, Instruments, and Systems   Vol. 4 ( 01 ) page: 1   2018.1

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    Publisher:SPIE-Intl Soc Optical Eng  

    DOI: 10.1117/1.jatis.4.1.011210

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  3. The Altered State of η Carinae: HST's Photometric Record 1998-2021 Reviewed International coauthorship

    John C. Martin, Kris Davidson, Roberta M. Humphreys, Kazunori Ishibashi

    Research Notes of the AAS   Vol. 5 ( 8 ) page: 197 - 204   2021.8

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.3847/2515-5172/ac1fff

  4. The Altered State of η Carinae: HST's Photometric Record 1998-2021 Reviewed International coauthorship

    Martin, John C. ; Davidson, Kris ; Humphreys, Roberta M. ; Ishibashi, Kazunori

    Research Notes of the AAS   Vol. 5 ( 8 ) page: 197 - 204   2021.8

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.3847/2515-5172/ac1fff

  5. The Mass-Loss History of the Red Hypergiant VY CMa Reviewed International coauthorship

    Humphreys, R. M., Davidson, K., Richards, A. M. S., Ziurys, L. M., Jones, T., J., Ishibashi, K.

    The Astronomical Journal   Vol. 161 ( 3 ) page: 10   2021.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.3847/1538-3881/abd316

  6. XL-Calibur: the next-generation balloon-borne hard x-ray polarimeter Reviewed International coauthorship

    Maeda, Y. et al.

    Journal of Astronomical Telescopes, Instruments, and Systems   Vol. 11444 ( 2X ) page: 9   2021.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1117/12.2560319

  7. The Unexpected Spectrum of the Innermost Ejecta of the Red Hypergiant VY CMa Reviewed International coauthorship

    Humphreys, Roberta M.; Ziurys, L. M.; Bernal, J. J.; Gordon, Michael S.; Helton, L. Andrew; Ishibashi, Kazunori; Jones, Terry J.; Richards, A. M. S.; Vlemmings, Wouter

    Astrophysical Journal Letters   Vol. 874 ( 2 ) page: 26 - 33   2019.4

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.3847/2041-8213/ab11e5

  8. Near-infrared evidence for a sudden temperature increase in Eta Carinae Reviewed International coauthorship

    Mehner, A., Ishibashi, K., Whitelock, P. Nagayama, T., Feast, M., van Wyk, F., de Wit, W.-J.

    Astronomy and Astrophysics   Vol. 564 ( A14 ) page: 9 - 21   2014.4

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1051/0004-6361/201322729

  9. Chandra/HETGS Observations of the Capella System: The Primary as a Dominating X-Ray Source Reviewed

    Ishibashi, Kazunori; Dewey, Daniel; Huenemoerder, David P.; Testa, Paola

    The Astrophysical Journal   Vol. 644 ( 2 ) page: 117-120   2006.6

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1086/505702

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Research Project for Joint Research, Competitive Funding, etc. 2

  1. "Last Call!" Eta Carinae's Spectroscopic Event in 2020 International coauthorship

    Grant number:Proposal ID 16176  2020.5

    Space Telescope Science Institute  Hubble Space Telescope Proposal Cycle 28  Stellar Astrophysics

    Davidson, K., Humphreys, R. M., Martin, J. C., Ishibashi, K.

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    Authorship:Coinvestigator(s) 

  2. The Recent Mass Loss History of the Red Hypergiant CY CMa International coauthorship

    Grant number:Proposal ID 15076  2020.5

    Space Telescope Science Institute  Hubble Space Telescope Proposal Cycle 25  Stellar Astrophysics

    Humphreys, R. M., Gordon, M. S., Helton, L. A., Ishibashi, K., Jones, T. J., Khouri, T., Richards, A., Vlemmings, W., Ziurys, L.

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    Authorship:Coinvestigator(s) 

KAKENHI (Grants-in-Aid for Scientific Research) 1

  1. Investigation of changing stellar wind of Eta Carinae in NIR and UV

    Grant number:26400227  2014.4 - 2018.3

    Ishibashi Kazunori

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    Authorship:Principal investigator 

    Grant amount:\1820000 ( Direct Cost: \1400000 、 Indirect Cost:\420000 )

    Super-massive star Eta Carinae was well-known for its tremendous mass loss rate -- 1/1000th of the solar mass per year -- and its physical mechanism is not understood at all. Then, in early 2000s, it is noted that Eta Car is undergoing rapid changes in its brightness and apparent changes in its massive stellar wind. In this research program, with the use of Hubble Space Telescope (STIS) and IRSF telescope at SAAO, the cause is identified to be a significant reduction in Eta Car's massive stellar wind, roughly by 50% of the reduction merely in 10 years or so.