Rchr
J-GLOBAL ID:201601009920054243   Update date: May. 28, 2024

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 (84):
  • 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
  • Shota L Yokoyama, Yutaka Ohira. Resistive heating induced by streaming cosmic rays around a galaxy in the early Universe. Monthly Notices of the Royal Astronomical Society. 2023. 523. 3. 3671-3677
  • G. S. Diniz, Y. Wada, Y. Ohira, K. Nakazawa, M. Tsurumi, T. Enoto. Ambient Conditions of Winter Thunderstorms in Japan to Reproduce Observed Gamma-Ray Glow Energy Spectra. Journal of Geophysical Research: Atmospheres. 2023. 128. 10
  • Yuri Sato, Kohta Murase, Yutaka Ohira, Ryo Yamazaki. Two-component jet model for multiwavelength afterglow emission of the extremely energetic burst GRB 221009A. Monthly Notices of the Royal Astronomical Society: Letters. 2023. 522. 1. L56-L60
  • Yuri Sato, Kaori Obayashi, B. Theodre Zhang, Shuta J. Tanaka, Kohta Murase, Yutaka Ohira, Ryo Yamazaki. Synchrotron self-compton emission in the two-component jet model for gamma-ray bursts. Journal of High Energy Astrophysics. 2023. 37. 51-61
more...
MISC (11):
  • 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
  • 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
  • Saito Takayuki, Kohri Kazunori, Ohira Yutaka, Ioka Kunihito, Uchiyama Yasunobu, Hirotani Kouichi, Kisaka Shota, Ishio Kazuma, Inoue Susumu, Okumura Akira, et al. 18pSB-5 CTA Report 77 : Gamma-ray pulsars and Crab Flares seen with CTA. Meeting Abstracts of the Physical Society of Japan. 2014. 69.2.1. 0. 33
  • Teshima Masahiro. 18pSB-3 CTA Report 75 : General Report. Meeting Abstracts of the Physical Society of Japan. 2014. 69.2.1. 32
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Lectures and oral presentations  (124):
  • 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)
more...
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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