Yutaka Ohira

オオヒラユタカ | Yutaka Ohira

Research field (3)： Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics , Particle, nuclear, cosmic-ray, and astrophysics - experiment , Astronomy

Research keywords (6)： Astrophysics , cosmic ray , magnetic field , plasma , shock wave , supernova remnant

Research theme for competitive and other funds (8)：

2024 - 2026 天体で加速される高エネルギー粒子数の解明
2021 - 2026 Exploration of high-energy astrophysical phenomena in star and planet formation processes
2019 - 2023 Study for acceleration mechanism of first cosmic rays and their influences
2016 - 2020 Study for cosmic-ray acceleration in partially ionized plasmas and application to the early universe
2015 - 2018 Study of cosmic-ray acceleration at supernova remnant shocks propagating into realistic inhomogeneous media

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Papers (91)：

Shoma F. Kamijima, Yutaka Ohira. Cosmic-ray acceleration in core-collapse supernova remnants with the wind termination shock. Physical Review D. 2024
Kazuki Kamiido, Yutaka Ohira. Collisionless Shock in a Relativistically Hot Unmagnetized Electron-Positron Plasma. The Astrophysical Journal. 2024
Yutaka Ohira. Evolution of the Secondary Electron Spectrum during Cosmic-Ray Discharge in the Universe. The Astrophysical Journal. 2024
Kanji Morikawa, Yutaka Ohira, Takumi Ohmura. Particle Acceleration and Magnetic Field Amplification by Relativistic Shocks in Inhomogeneous Media. The Astrophysical Journal Letters. 2024
G. S. Diniz, Y. Wada, Y. Ohira, K. Nakazawa, M. Tsurumi, T. Enoto. Relativistic Runaway Electron Avalanche Development Near the Electric Field Threshold in Inhomogeneous Air. Geophysical Research Letters. 2023. 50. 20

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MISC (13)：

大平豊. EUREKA 初代宇宙線の加速-Acceleration of First Cosmic Rays. 天文月報 = The astronomical herald. 2019. 112. 1. 41-46
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, et al. CTA報告123:全体報告. 日本物理学会講演概要集(CD-ROM). 2017. 72. 2. ROMBUNNO.13aU32-1-355
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, et al. CTA報告117:全体報告. 日本物理学会講演概要集(CD-ROM). 2017. 72. 1. ROMBUNNO.18aS11-5-457
Nakamori T., Gabici Stefano, CTA-Japan SNR team. 22pDD-5 Prospects for CTA observations of a young SNR RX J1713.7-3946. Meeting Abstracts of the Physical Society of Japan. 2015. 70.1. 0. 443-444
T. Nakamori, H. Katagiri, H. Sano, R. Yamazaki, Y. Ohira, A. Bamba, Y. Fukui, K. Mori, S. H. Lee, Y. Fujita, et al. Simulating cherenkov telescope array observation of RX J1713.7-3946. Proceedings of Science. 2015. 30-July-2015

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Lectures and oral presentations (123)：

超高エネルギーガンマ線バーストの二成分を持つジェットからの多波長残光放射
(日本天文学会年会講演予稿集 2023)
初代宇宙線による銀河間空間の加熱
(日本天文学会年会講演予稿集 2023)
相対論的衝撃波における下流乱流磁場生成効果による粒子加速
(日本天文学会年会講演予稿集 2023)
抵抗性電場によって加速された宇宙線2次電子によるガスの電離
(日本天文学会年会講演予稿集 2023)
Cosmic-ray escape from a supernova remnant expanding in a stellar wind with a Parker-spiral magnetic field
(日本物理学会講演概要集(CD-ROM) 2023)

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Education (1)：

2007 - 2010 Osaka University Graduate School of Science

Work history (4)：

2018/01 - 現在 The University of Tokyo Graduate School of Science, Department of Earth and Planetary Science Assistant professor
2014/04 - 2017/12 Aoyama Gakuin University College of Science and Engineering, Department of Physics and Mathematics Assistant professor
2012/04 - 2014/03 Aoyama Gakuin University College of Science and Engineering, Department of Physics and Mathematics JSPS Research fellow (PD), Aoyama Gakuin University, Japan
2010/04 - 2012/03 High Energy Accelerator Research Organization Institute of Particle and Nuclear Studies Researcher

Committee career (1)：

2023/12 - 2025/11 理論天文学宇宙物理学懇談会運営委員

Awards (2)：

2020 - Division of Plasma Physics, Association of Asia Pacific Physical Societies Young Researcher Award
2017 - Young Scientist Award of the Physical Society of Japan

Association Membership(s) (2)：

日本物理学会 , 日本天文学会

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