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
2012 - 2014 部分電離プラズマ中の超新星残骸における宇宙線の加速機構と逃走過程の解明
2009 - 2011 Study of particle acceleration processes at collisionless shocks via next-generation and first-principle particle simulations
2008 - 2009 超新星残骸における電子加速と大振幅に揺らいだ磁場
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Papers (100)：
G. S. Diniz, Y. Wada, Y. Ohira, K. Nakazawa, M. Tsurumi, I. T. Cruz, T. Enoto. Simulated Characteristics of On-Ground Gamma-Ray Glows. Journal of Geophysical Research: Atmospheres. 2025
Masahiro Ichihashi, Aya Bamba, Dai Tateishi, Kouichi Hagino, Satoru Katsuda, Hiroyuki Uchida, Hiromasa Suzuki, Ryo Yamazaki, Yutaka Ohira. The Electron Temperature Distribution and the High Ionization Just behind the Shock in the Cygnus Loop. The Astrophysical Journal. 2025
Yuri Sato, Kohta Murase, Yutaka Ohira, Susumu Inoue, Ryo Yamazaki. Two-component jet model for the afterglow emission of GRB 201216C and GRB 221009A and implications for jet structure of very-high-energy gamma-ray bursts. Journal of High Energy Astrophysics. 2025
Yutaka Ohira. Very-high-energy gamma-rays from cosmic rays escaping from Galactic black hole binaries. Monthly Notices of the Royal Astronomical Society. 2025
Kazuki Kamiido, Yutaka Ohira. Collisionless Shocks Having Relativistic Velocities in Relativistically Hot Plasmas. The Astrophysical Journal. 2025
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
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
