Study of Emission Mechanism of Gamma-ray Bursts and Supernova Remnants and the Origin of High-Energy Cosmic-rays

• Project/Area Number: 18740153
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Hiroshima University
• Principal Investigator: YAMAZAKI Ryo Hiroshima University, 大学院・理学研究科, 助教 (40420509)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥3,500,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥300,000); Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2007: ¥1,000,000 (Direct Cost: ¥1,000,000); Fiscal Year 2006: ¥1,200,000 (Direct Cost: ¥1,200,000)
• Keywords: 高エネルギー宇宙物理学 / ガンマ線バースト / 宇宙線 / 超新星残骸 / 相対論ジェット / 衝撃波 / 宇宙線粒子加速 / 高エネルギー宇宙線

Research Abstract

ガンマ線バースト(GRB)の放射機構を探ることで、その中心天体やジェットの構造に対する考察を行った。また、我々の銀河系内にある超新星残骸や超高エネルギーガンマ線天体に関する理論的研究および観測的研究を行い、宇宙線加速機構に対する知見を得た。さらにプラズマ粒子シミュレーションを用いた無衝突衝撃波の数値実験を行い、被加速粒子の注入過程について検討を行った。

Research Products

• [Journal Article] Fermi Observations of High-Energy Gamma-Ray Emission from GRB 080916C (2009)
  • Author(s): Abdo, A. A. (他252名, アルファベット順に250番目)
  • Journal Title: Science 323 Pages: 1688-1693
  • Peer Reviewed
• [Journal Article] Turbulence and Magnetic Field Amplification in Supernova Remnants: Interactions between a Strong Shock Waves and Multi- Phase Interstellar Medium (2009)
  • Author(s): Inoue, T., Yamazaki, R., Inutsuka, S.
  • Journal Title: The Astrophysical Journal 695 Pages: 825-833
  • Peer Reviewed
• [Journal Article] Electron acceleration at a low-Mach-number perpendicular collisionless shock (2009)
  • Author(s): Umeda, T., Yamazaki, R., Yamao, M.
  • Journal Title: The Astrophysical Journal 695 Pages: 574-579
  • Peer Reviewed
• [Journal Article] Gamma-Ray Spectrum of RXJ1713.7-3946 in the Fermi era and Future Detection of Neutrinos (2009)
  • Author(s): Yamazaki, R., Kohri, K., Katagiri, H.
  • Journal Title: Astronomy and Astrophysics 495 Pages: 9-13
  • Peer Reviewed
• [Journal Article] X-ray Observations of Very High Energy Gamma-ray Source, HESS J1745-303, with Suzaku (2009)
  • Author(s): Bamba, A. (他6名, 2番目)
  • Journal Title: The Astrophysical Journal 691 Pages: 1854-1861
  • Peer Reviewed
• [Journal Article] The Nature of a Cosmic-ray Accelerator CTB37B Observed with Suzaku and Chandra (2009)
  • Author(s): Nakamura, R. (他7名, 5番目)
  • Journal Title: Publication of Astronomical Society of Japan 61
  • Peer Reviewed
• [Journal Article] Prior Emission Model for X-ray Plateau Phase of GRB Afterglows (2009)
  • Author(s): Yamazaki, R.
  • Journal Title: The Astrophysical Journal Letters 690
  • Peer Reviewed
• [Journal Article] Two-Dimensional Full Particle Simulation of a Perpendicular Collisionless Shock with a Shock-Rest-Frame Model (2009)
  • Author(s): Umeda, T, et.al.
  • Journal Title: The Astrophysical Journal Letters 681
  • Peer Reviewed
• [Journal Article] The Nature of a Cosmic-ray Accelerator CTB37B Observed with Suzaku and Chandra (2009)
  • Author(s): Nakamura R, et.al.
  • Journal Title: Publication of Astronomical Society of Japan 61
  • Peer Reviewed
• [Journal Article] X-ray Observations of Very High Energy Gamma-ray Source, HESS J 1745-303, with Suzaku (2009)
  • Author(s): Bamba, A, et.al.
  • Journal Title: The Astrophysical Journal 691 Pages: 1854-1861
  • Peer Reviewed
• [Journal Article] Gamma-Ray Spectrum of RX J 17137-3946 in the Fermi era and Future Detection of Neutrinos (2009)
  • Author(s): Yamazaki, R, et.al.
  • Journal Title: Astronomy and Astrophysics 495 Pages: 9-13
  • Peer Reviewed
• [Journal Article] Electron acceleration at a low-Mach-number perpendicular collisionless shock (2009)
  • Author(s): Umeda, et.al.
  • Journal Title: The Astrophysical Journal 695(印刷中)
  • Peer Reviewed
• [Journal Article] Turbulence and Magnetic Field Amplification in Supernova Remnants : Interactions between a Strong Shock Waves and Multi-Phase Interstellar Medium (2009)
  • Author(s): Inoue, et.al.
  • Journal Title: The Astrophysical Journal (印刷中)
  • Peer Reviewed
• [Journal Article] Fermi Observations of High-Energy Gamma-Ray Emission from GRB 080916C (2009)
  • Author(s): Abdo, A. A, et.al.
  • Journal Title: Science 324(印刷中)
  • Peer Reviewed
• [Journal Article] Two-Dimensional Full Particle Simulation of a Perpendicular Collisionless Shock with a Shock-Rest-Frame Model (2008)
  • Author(s): Umeda, T., Yamazaki, R., Yamao, M.
  • Journal Title: The Astrophysical Journal Letters 681
  • Peer Reviewed
• [Journal Article] Global Properties of X-ray Flashes and X-ray-rich Gamma-ray Bursts Observed by Swift (2008)
  • Author(s): Sakamoto, T. (他16名, 4番目)
  • Journal Title: The Astrophysical Journal 679 Pages: 570-586
  • Peer Reviewed
• [Journal Article] Discovery of Extended X-Ray Emission from an Unidentified TeVSource, HESS J1614-518, Using the Suzaku Satellite (2008)
  • Author(s): Matsumoto, H. (他10名, 7番目)
  • Journal Title: Publication of Astronomical Society of Japan 60
  • Peer Reviewed
• [Journal Article] Suzaku Observation of RCW 86 Northeastern Shell (2008)
  • Author(s): Yamaguchi, H. (他6名, 5番目)
  • Journal Title: Publication of Astronomical Society of Japan 60
  • Peer Reviewed
• [Journal Article] Global Properties of X-ray Flashes and X-ray-rich Gamma-ray Bursts Observed by Swift (2008)
  • Author(s): Sakamoto, T, et.al.
  • Journal Title: The Astrophysical Journal 679 Pages: 570-586
  • Peer Reviewed
• [Journal Article] Suzaku Observation of the RCW 86 Northeastern Shell (2008)
  • Author(s): Yamaguchi, et. al.
  • Journal Title: Publication of Astronomical Society of Japan 60
  • Peer Reviewed
• [Journal Article] Discovery of Extended X-ray Emission from an Unidentified TeV Source HESS J1614-518, Using the Suzaku Satellite (2008)
  • Author(s): Matsumoto, et. al.
  • Journal Title: publication of Astronomical Society of Japan 60
  • Peer Reviewed
• [Journal Article] Evidence of Exponential Decay Emission in the Swift Gamma-Ray Bursts (2007)
  • Author(s): Sakamoto, T. (他8名, 3番目)
  • Journal Title: The Astrophysical Journal 669 Pages: 1115-1129
  • Peer Reviewed
• [Journal Article] Testing the External Shock Model of GRBs using the Late-Time Simultaneous Optical and X-ray Afterglows (2007)
  • Author(s): Urata, Y., Yamazaki, R. (他23名, 2番目)
  • Journal Title: The Astrophysical Journal Letters 668
  • Peer Reviewed
• [Journal Article] Probing the Structure of GRB Jets with Steep Decay Phase of their Early X-ray Afterglows (2007)
  • Author(s): Takami, K. (他3名, 2番目)
  • Journal Title: The Astrophysical Journal 663 Pages: 1118-1124
  • Peer Reviewed
• [Journal Article] A Unified Model of the Prompt Optical Emission of GRBs (2007)
  • Author(s): Doi, H., Takami, K., Yamazaki, R.
  • Journal Title: The Astrophysical Journal Letters 659
  • Peer Reviewed
• [Journal Article] A Unified Model of the Prompt Optical Emission of Gamma-Ray Bursts (2007)
  • Author(s): Doi, H., et. al.
  • Journal Title: The Astrophysical Journal Letters 659
  • Peer Reviewed
• [Journal Article] Probing the Structure of Gamma-Ray Burst Jets with the Steep Decay Phase of their Early X-ray Afterglows (2007)
  • Author(s): Takami, K., et. al.
  • Journal Title: The Astrophysical Journal 663 Pages: 1118-1124
  • Peer Reviewed
• [Journal Article] Testing the External-Shock Model of Gamma-Ray Bursts Using the Late-Time Simultaneous Optical and X-ray Afterglows (2007)
  • Author(s): Urata, Y., et. al.
  • Journal Title: The Astrophysical Journal Letters 668
  • Peer Reviewed
• [Journal Article] Evidence of Exponential Dacay Emission in the Swift Gamma-Ray Bursts (2007)
  • Author(s): Sakamoto, T., et. al.
  • Journal Title: The Astrophysical Journal 669 Pages: 1115-1129
  • Peer Reviewed
• [Journal Article] The X-ray Synchrotron Emission of RCW 86 and the Implications for its Age (2006)
  • Author(s): Vink, J. (他5名, 6番目)
  • Journal Title: The Astrophysical Journal Letters 648
  • Peer Reviewed
• [Journal Article] Full particle simulation of a perpendicular collisionless shock: A shock-rest-frame model (2006)
  • Author(s): Umeda, T., Yamazaki, R.
  • Journal Title: Earth, Planets and Space 58
  • NAID: 10024496073
  • Peer Reviewed
• [Journal Article] TeV Gamma-Rays from Old Supernova Remnants (2006)
  • Author(s): Yamazaki, R. (他5名, 1番目)
  • Journal Title: Monthly Notices of the Royal Astronomical Society 371 Pages: 1975-1982
  • NAID: 120000878156
  • Peer Reviewed
• [Journal Article] Efficiency crisis of Swift GRBs with shallow X-ray afterglows: prior activity or time-dependent microphysics? (2006)
  • Author(s): Ioka, K. (他3名, 3番目)
  • Journal Title: Astronomy & Astrophysics 458 Pages: 7-12
  • Peer Reviewed
• [Journal Article] Shallow decay of Early X-ray Afterglows from Inhomogeneous Gamma-ray Burst Jets (2006)
  • Author(s): Toma, K. (他3名, 3番目)
  • Journal Title: The Astrophysical Journal Letters 640
  • Peer Reviewed
• [Journal Article] Tail Emission of Prompt Gamma-Ray Burst Jets (2006)
  • Author(s): Yamazaki, R. (他3名, 1番目)
  • Journal Title: Monthly Notices of the Royal Astronomical Society 369 Pages: 311-316
  • NAID: 120000878157
  • Peer Reviewed
• [Journal Article] Tail emission of prompt gamma-ray burst jets (2006)
  • Author(s): Yamazaki, R. et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society 369 Pages: 311-316
  • NAID: 120000878157
• [Journal Article] Shallow Decay of Early X-ray Afterglows from Inhomogeneous Gamma-ray Burst Jets (2006)
  • Author(s): Toma, K. et al.
  • Journal Title: The Astrophysical Journal Letters 640
• [Journal Article] Efficiency crisis of Swift gamma-ray bursts with shallow X-ray afterglows : prior activity or time-dependent microphysics? (2006)
  • Author(s): Ioka, K. et al.
  • Journal Title: Astronomy ＆ Astrophysics 458 Pages: 7-12
• [Journal Article] TeV gamma-rays from old supernova remnants (2006)
  • Author(s): Yamazaki et al.
  • Journal Title: Monthly Notices of the Royal Astronomical Society 371 Pages: 1975-1982
  • NAID: 120000878156
• [Journal Article] Full particle simulation of a perpendicular collisionless shock : A shock-rest-frame model (2006)
  • Author(s): Umeda, T. et al.
  • Journal Title: Earth, Planets, and Space 58
• [Journal Article] The X-ray Synchrotron Emission of RCW 86 and the Implications for its Age (2006)
  • Author(s): Vink, J. et al.
  • Journal Title: The Astrophysical Journal Letters 648
• [Presentation] 超新星残骸RX J1713.7-3946のガンマ線スペクトル (2008)
  • Author(s): 山崎了
  • Organizer: 日本天文学会2008年秋季年会
  • Place of Presentation: 岡山大学
  • Year and Date: 2008-09-12
• [Presentation] X-ray plateau phase の起源について (2008)
  • Author(s): 山崎了
  • Organizer: 科研費特定領域研究「ガンマ線バーストで読み解く太古の宇宙」第2回領域シンポジウム
  • Place of Presentation: 国立天文台
• [Presentation] On the Gamma-ray Spectrum of RX J1713.7-3946 in the Fermi era (2008)
  • Author(s): 山崎了
  • Organizer: 高エネルギー宇宙物理学研究会
  • Place of Presentation: 天橋立 宮津ロイヤルホテル
• [Presentation] 超新星残骸RXJ1713.7-3946のガンマ線スペクトル (2008)
  • Author(s): 山崎了
  • Organizer: 日本天文学会2008年秋季年会
  • Place of Presentation: 岡山大学
• [Presentation] On the origin of TeV unidentified sources (2008)
  • Author(s): R. Yamazaki
  • Organizer: 37th COSPAR Scientific Assembly
  • Place of Presentation: Montreal, Canada
• [Presentation] Recent topics on particle acceleration at supernovaremnants (2008)
  • Author(s): R. Yamazaki
  • Organizer: American Physical Society Special Conference
  • Place of Presentation: St Luois, USA
• [Presentation] Recent Progress on Theories of Particle Acceleration (2008)
  • Author(s): R. Yamazaki
  • Organizer: International Workshop on Advances in Cosmic Ray Science
  • Place of Presentation: Waseda University, Japan
• [Presentation] Swift時代のX-ray Flashes/X-ray-rich GRBs (2008)
  • Author(s): 山崎了
  • Organizer: 科研費特定領域研究「ガンマ線バーストで読み解く太古の宇宙」第一回領域シンポジウム
  • Place of Presentation: 東京工業大学
• [Presentation] TeV Gamma-rays from Old Supernova Remnants (2008)
  • Author(s): R. Yamazaki
  • Organizer: The Extreme Universe in the Suzaku Era
  • Place of Presentation: Kyoto, Japan
• [Presentation] 銀河系内TeV unID (2007)
  • Author(s): 山崎了
  • Organizer: 研究会「高エネルギー天体現象と粒子加速の理論2007」
  • Place of Presentation: 大阪大学
• [Presentation] 天体プラズマの粒子加速の理論に関する最近の話題 (2007)
  • Author(s): 山崎了
  • Organizer: 日本天文学会2007年秋季年会
  • Place of Presentation: 岐阜大学
• [Presentation] On the Energy Partition in Astrophysical Collisionless Shocks (2007)
  • Author(s): R. Yamazaki
  • Organizer: Japan-Korea Mini-Workshop 2007 on Laboratory
  • Place of Presentation: Daejeon, Korea
• [Presentation] 古い超新星残骸からのTeVガンマ線放射とTeVガンマ線未同定天体 (2007)
  • Author(s): 山崎了
  • Organizer: 日本天文学会2007年春季年会
  • Place of Presentation: 東海大学
• [Presentation] TeVガンマ線未同定天体の起源について (2007)
  • Author(s): 山崎了
  • Organizer: 高エネルギー宇宙物理連絡会第7回研究会「高エネルギー宇宙物理学の将来計画」
  • Place of Presentation: 宇宙線研
• [Presentation] A Unified Model of Prompt Optical Emission of GRBs (2007)
  • Author(s): 山崎了
  • Organizer: 研究会「多波長・多モード連携観測で探る高エネルギー天体現象」
  • Place of Presentation: 広島大学
• [Presentation] TeV Gamma-rays from Old Supernova Remnants (2007)
  • Author(s): 山崎了
  • Organizer: 研究会「多波長・多モード連携観測で探る高エネルギー天体現象」
  • Place of Presentation: 広島大学
• [Presentation] Energy Partition at Shocks in Young Supernova Remnants (2007)
  • Author(s): R. Yamazaki
  • Organizer: Shock Formation under Extreme Environments in the Universe
  • Place of Presentation: TokyoTech, Japan
• [Presentation] A Unifired Model of Prompt Optical Emission of GRBs (2007)
  • Author(s): 山崎了
  • Organizer: 基研研究会「ガンマ線バーストの新しいフロンティア」
  • Place of Presentation: 京都大学基礎物理学研究会
• [Presentation] Origin of TeV unID Sources-Old Supernova Remnants?- (2006)
  • Author(s): 山崎了
  • Organizer: 研究会「高エネルギー天体現象と粒子加速の理論」
  • Place of Presentation: 大阪大学
• [Presentation] 古い超新星残骸からのTeVガンマ線の放射 (2006)
  • Author(s): 山崎了
  • Organizer: 日本物理学会2006年秋季大会
  • Place of Presentation: 奈良女子大学
• [Presentation] Particle simulation of collisionless shocks with a shock-rest-frame model. I (2006)
  • Author(s): 山崎了
  • Organizer: 日本地球惑星科学連合2006年大会
  • Place of Presentation: 幕張メッセ
• [Book] 星間物質と星形成 (2008)
  • Author(s): 山崎了,福井康雄, 他編
  • Publisher: 日本評論社
• [Book] 星間物質と星形成 (2008)
  • Author(s): 福井康雄, 他編
  • Publisher: 日本評論社
• [Remarks]
  • URL: http://theo.phys.sci.hiroshima-u.ac.jp/~ryo/papers/index.html