Study of radiation mechanism of Galactic gamma-ray sources and acceleration mechanism of Galactic cosmic rays

• Project/Area Number: 21740184
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Aoyama Gakuin University (2010-2011); Hiroshima University (2009)
• Principal Investigator: YAMAZAKI Ryo 青山学院大学, 理工学部, 准教授 (40420509)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2009: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
• Keywords: 宇宙線 / 宇宙物理 / 理論天文学 / 無衝突衝撃波 / ガンマ線 / 超新星残骸 / パルサー星雲

Research Abstract

We investigated both observationally and theoretically gamma-ray emitting supernova remnants and pulsar wind nebulae which generate Galactic cosmic-ray electrons and protons. With particle-in-cell simulations, we also studied processes of wave excitation and associated particle acceleration around the transition layer of collisionless shocks.

Research Products

• [Journal Article] Modified two-stream instability at perpendicular collisionless shocks: Full particle simulations (2012)
  • Author(s): T. Umeda, Y. Kidani, S. Matsukiyo, and R. Yamazaki
  • Journal Title: J Geophys. Res. Volume: Vol.117 Issue: A3
  • DOI: 10.1029/2011ja017182
  • Peer Reviewed
• [Journal Article] Evolution of Synchrotron X-rays in Supernova Remnants (2012)
  • Author(s): R. Nakamura, A. Bamba, T. Dotani, M. Ishida, R. Yamazaki, K. Kohri
  • Journal Title: The Astrophysical Journal Volume: 746 Issue: 2 Pages: 134-134
  • DOI: 10.1088/0004-637x/746/2/134
  • Peer Reviewed
• [Journal Article] Fermi Large Area Telescope Observations of the Supernova Remnant G8.7-0.1 (2012)
  • Author(s): M.Ajello, et al
  • Journal Title: The Astrophysical Journal Volume: 744 Issue: 1 Pages: 80-80
  • DOI: 10.1088/0004-637x/744/1/80
  • Peer Reviewed
• [Journal Article] Toward Understanding the Cosmic-Ray Acceleration at Young Supernova Remnants Interacting with Interstellar Clouds : Possible Applications to RX J1713.7-3946 (2012)
  • Author(s): Inoue, Tsuyoshi, et al
  • Journal Title: The Astrophysical Journal Volume: 744 Issue: 1 Pages: 71-71
  • DOI: 10.1088/0004-637x/744/1/71
  • Peer Reviewed
• [Journal Article] Relativistic electron shock drift acceleration in low Mach number galaxy cluster shocks (2011)
  • Author(s): S. Matsukiyo, Y. Ohira, R. Yamazaki, and T. Umeda
  • Journal Title: Astrophys. J. Volume: Vol.742 Issue: 1 Pages: 1-9
  • DOI: 10.1088/0004-637x/742/1/47
  • NAID: 120003483454
  • Peer Reviewed
• [Journal Article] Fermi Large Area Telescope Observations of the Cygnus Loop Supernova Remnant (2011)
  • Author(s): Katagiri, H.(他9名)
  • Journal Title: The Astrophysical Journal Volume: 741 Issue: 1 Pages: 44-44
  • DOI: 10.1088/0004-637x/741/1/44
  • Peer Reviewed
• [Journal Article] Observations of the Young Supernova Remnant RX JI713.7-3946 with the Fermi Large Area Telescope (2011)
  • Author(s): Abdo, et al
  • Journal Title: Astrophysical Journal Volume: 734 Issue: 1 Pages: 28-36
  • DOI: 10.1088/0004-637x/734/1/28
  • Peer Reviewed
• [Journal Article] The Radiative X-ray and Gamma-rayEfficiencies of Rotation-powered Pulsars (2011)
  • Author(s): Vink, J., Bamba, A., Yamazaki, R.
  • Journal Title: The Astrophysical Journal Volume: 727 Issue: 2 Pages: 131-131
  • DOI: 10.1088/0004-637x/727/2/131
  • Peer Reviewed
• [Journal Article] Gamma-rays from molecular clouds illuminated by cosmic rays escaping from interacting supernova remnants (2011)
  • Author(s): Ohira, Y., Murase, K., Yamazaki, R.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 410 Pages: 1577-1582
  • DOI: 10.1111/j.1365-2966.2010.17539.x
  • Peer Reviewed
• [Journal Article] Gamma-rays from molecular clouds illuminated by cosmic rays escaping from interacting SNRs (2011)
  • Author(s): Ohira, Y., et al
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 410 Pages: 1577-1582
  • Peer Reviewed
• [Journal Article] The Radiative X-ray and Gamma-ray Efficiencies of Rotation Powered Pulsars (2011)
  • Author(s): Vink, J., et al
  • Journal Title: The Astrophysical Journal Volume: 727
  • Peer Reviewed
• [Journal Article] On the reformation at quasi- and exactly-perpendicular shocks: Full particle-in-cell simulations (2010)
  • Author(s): T. Umeda, Y. Kidani, M. Yamao, S. Matsukiyo, and R. Yamazaki
  • Journal Title: J. Geophys. Res. Volume: Vol.115 Issue: A10
  • DOI: 10.1029/2010ja015458
  • Peer Reviewed
• [Journal Article] Two-step Acceleration Model of Cosmic Rays at Middle-aged Supernova Remnants : Universality in Secondary Shocks (2010)
  • Author(s): Inoue, T., Yamazaki, R., Inutsuka, S.
  • Journal Title: The Astrophysical Journal Letters Volume: 723 Issue: 1 Pages: L108-L112
  • DOI: 10.1088/2041-8205/723/1/l108
  • Peer Reviewed
• [Journal Article] The Relation Between Post-shock Temperature, Cosmic-ray Pre-ssure, and Cosmic-ray Escape for Non-relativistic Shocks (2010)
  • Author(s): Vink, J., Yamazaki, R., Helder, E. A., Schure, K. M.
  • Journal Title: The Astrophysical Journal Volume: 722 Issue: 2 Pages: 1727-1734
  • DOI: 10.1088/0004-637x/722/2/1727
  • Peer Reviewed
• [Journal Article] X-ray Evolution of Pulsar Wind Nebulae (2010)
  • Author(s): Bamba, A., Anada, T., Dotani, T., Mori, K., Yamazaki, R., Ebisawa, K., Vink, J.
  • Journal Title: The Astrophysical Journal Letters Volume: 719 Issue: 2 Pages: L116-L120
  • DOI: 10.1088/2041-8205/719/2/l116
  • Peer Reviewed
• [Journal Article] Fermi Large Area Telescope Observations of the Supernova Remnant W28(G6.4-0.1) (2010)
  • Author(s): Abdo, A. A.(他153名)
  • Journal Title: The Astrophysical Journal Volume: 718 Issue: 1 Pages: 348-356
  • DOI: 10.1088/0004-637x/718/1/348
  • Peer Reviewed
• [Journal Article] X-Ray Emission from HESS J1731-347/SNR G353.6-0.7 and Central Compact Source XMMS J173203-344518 (2010)
  • Author(s): Tian, W. W., Li, Z., Leahy, D. A., Yang, J., Yang, X. J., Yamazaki, R., Lu, D.
  • Journal Title: The Astrophysical Journal Volume: 712 Issue: 2 Pages: 790-796
  • DOI: 10.1088/0004-637x/712/2/790
  • Peer Reviewed
• [Journal Article] Escape-limited model of cosmic-ray acceleration revisited (2010)
  • Author(s): Ohira, Y., K. Murase, and R. Yamazaki
  • Journal Title: Astron. Astrophys Volume: 513, A17 Pages: 1-10
  • DOI: 10.1051/0004-6361/200913495
  • Peer Reviewed
• [Journal Article] Gamma-Ray Emission from the Shell of Supernova Remnant W44 Revealed by the Fermi LAT (2010)
  • Author(s): Abdo, A. A.(他180名)
  • Journal Title: Science Volume: 327 Issue: 5969 Pages: 1103-1106
  • DOI: 10.1126/science.1182787
  • Peer Reviewed
• [Journal Article] Fermi-Lat Discovery of GeV Gamma-Ray Emission from the Young Supernova Remnant Cassiopeia A (2010)
  • Author(s): Abdo, A. A.(他171名)
  • Journal Title: The Astrophysical Journal Letters Volume: 710 Issue: 1 Pages: L92-L97
  • DOI: 10.1088/2041-8205/710/1/l92
  • Peer Reviewed
• [Journal Article] Fermi LAT Observations of the Supernova Remnant W28 (G6.4-0.1) (2010)
  • Author(s): Abdo, A.A., et al
  • Journal Title: The Astrophysical Journal Volume: 718 Pages: 348-356
  • Peer Reviewed
• [Journal Article] X-ray Evolution of Pulsar Wind Nebulae (2010)
  • Author(s): Bamba, A., et al
  • Journal Title: The Astrophysical Journal Letters Volume: 719
  • Peer Reviewed
• [Journal Article] The Relation between Post-Shock Cosmic-Ray Pressure and Cosmic-Ray Escape from Non-relativistic Shocks (2010)
  • Author(s): Vink, J., et al
  • Journal Title: The Astrophysical Journal Volume: 722 Pages: 1727-1734
  • Peer Reviewed
• [Journal Article] Two-Step Acceleration Model of Cosmic Rays at Middle-aged SNRs : Universality in Secondary Shocks (2010)
  • Author(s): Inoue, T., et al
  • Journal Title: The Astrophysical Journal Letters Volume: 723
  • Peer Reviewed
• [Journal Article] On the reformation at quasi- and exactly perpendicular shocks : Full particle-in-cell simulations (2010)
  • Author(s): Umeda, T., et al
  • Journal Title: Journal of Geophysical Research Volume: 115
  • Peer Reviewed
• [Journal Article] Fermi-LAT Discovery of GeV Gamma-Ray Emission from the Young Supernova Remnant Cassiopeia A (2010)
  • Author(s): Abdo, A.A., et al.
  • Journal Title: The Astrophysical Journal Letters 710
  • Peer Reviewed
• [Journal Article] X-ray emission from HESS J1731-347/SNR G353.6-0.7 and Central Compact Source XMMS J173203-344518 (2010)
  • Author(s): Tian, W., et al.
  • Journal Title: The Astrophysical Journal (印刷中)
  • Peer Reviewed
• [Journal Article] Escape-limited Model of Cosmic-ray Acceleration Revisited (2010)
  • Author(s): Ohira, Y., et al.
  • Journal Title: Astronomy and Astrophysics (印刷中)
  • Peer Reviewed
• [Journal Article] Gamma-ray Emission from the Shell of Supernova Remnant W44 Revealed by the Fermi LAT (2010)
  • Author(s): Abdo, A.A., et al.
  • Journal Title: Science (印刷中)
  • Peer Reviewed
• [Journal Article] Fermi LAT Discovery of Extended Gamma-Ray Emission in the Direction of Supernova Remnant W51C (2009)
  • Author(s): Abdo, A. A.(他176名)
  • Journal Title: The Astrophysical Journal Letters Volume: 706 Issue: 1 Pages: L1-L6
  • DOI: 10.1088/0004-637x/706/1/l1
  • Peer Reviewed
• [Journal Article] Is the PAMELA anomaly caused by supernova explosions near the Earth? (2009)
  • Author(s): Fujita, Y., Kohri, K., Yamazaki, R., Ioka, K.
  • Journal Title: Physical Review D Volume: 80 Issue: 6 Pages: 63003-63003
  • DOI: 10.1103/physrevd.80.063003
  • Peer Reviewed
• [Journal Article] Measureing the Cosmic-Ray Acceleration Efficiency of a Supernova Reminant (2009)
  • Author(s): Hedler,E.A, R.Yamazaki
  • Journal Title: Science Volume: 325 Issue: 5941 Pages: 719-722
  • DOI: 10.1126/science.1173383
  • Peer Reviewed
• [Journal Article] Measuring the Cosmic-Ray Acceleration Efficiency of a Supernova Remnant (2009)
  • Author(s): Eveline, H., et al.
  • Journal Title: Science 325 Pages: 719-722
  • Peer Reviewed
• [Journal Article] Is the PAMELA anomaly caused by supernova explosions near the Earth? (2009)
  • Author(s): Fujita, Y., et al.
  • Journal Title: Physical Review D 80 Pages: 0630031-5
  • Peer Reviewed
• [Journal Article] Fermi LAT Discovery of Extended Gamma-Ray Emission in the Direction of Supernova Remnant W51C (2009)
  • Author(s): Abdo, A.A., et al.
  • Journal Title: The Astrophysical Journal Letters 706
  • Peer Reviewed
• [Presentation] 宇宙線加速過程に対するガンマ線観測からの示唆 (2012)
  • Author(s): 山崎了
  • Organizer: 研究会「超新星残骸」
  • Place of Presentation: 名古屋大学
  • Year and Date: 2012-01-13
• [Presentation] On Gamma-ray Spectra of Young and Middle-aged SNRs Producing CRs (2012)
  • Author(s): Yamazaki, R.
  • Organizer: International Workshop on Particles and Radiation from Cosmic Accelerators CA2012
  • Place of Presentation: Chiba University, Chiba, Japan
• [Presentation] 天文コミュニティー側から実験室宇宙物理に期待すること (2012)
  • Author(s): 山崎了
  • Organizer: 日本天文学会2012年春季年会
  • Place of Presentation: 龍谷大学
• [Presentation] 超新星残骸のシンクロトロン放射スペクトル再考 (2012)
  • Author(s): 山崎了
  • Organizer: 宇宙線研研究会
  • Place of Presentation: 東京大学宇宙線研究所
• [Presentation] 超新星残骸SN 1006のシンクロトロン放射スペクトル再考 (2011)
  • Author(s): 山崎了
  • Organizer: 「高エネルギー宇宙物理」研究会
  • Place of Presentation: 大阪大学
• [Presentation] X線フラッシュの観測の現状と将来展望 (2011)
  • Author(s): 山崎了
  • Organizer: ガンマ線バースト将来衛星検討会議
  • Place of Presentation: 東京大学
• [Presentation] 確率微分方程式を用いた宇宙線粒子加速シミュレーション・コードの開発 (2011)
  • Author(s): 山崎了, 中島良介, 柳田昭平, 吉田龍生, 寺澤敏夫, 郡和範
  • Organizer: 日本天文学会2011年秋季年会
  • Place of Presentation: 鹿児島大学
• [Presentation] 多波長で探るガンマ線バースト (2011)
  • Author(s): 山崎了
  • Organizer: 高エネルギー宇宙物理学連絡会第11回研究会「多波長で探る高エネルギー現象」
  • Place of Presentation: 早稲田大学
• [Presentation] X線フラッシュの起源に関する理論研究 (2011)
  • 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4回領域シンポジウム
  • Place of Presentation: 東京工業大学
• [Presentation] 超新星残骸からのガンマ線放射と宇宙線起源の同定 (2010)
  • Author(s): 山崎了
  • Organizer: 宇宙線研究所共同利用研究会「高エネルギー宇宙物理学の将来とCTA」
  • Place of Presentation: 東京大学柏キャンパス
  • Year and Date: 2010-01-09
• [Presentation] 超新星残骸RX J1713.7-3946のガンマ線放射について (2010)
  • Author(s): 山崎了
  • Organizer: HEAP2010「高エネルギー宇宙物理学研究会」
  • Place of Presentation: 高エネルギー加速器研究機構
• [Presentation] Fermi衛星が観測した超新星残骸における折れ曲がった宇宙線スペクトルの起源 (2010)
  • Author(s): 井上剛志, 山崎了, 犬塚修一郎
  • Organizer: 日本天文学会2010年秋季年会
  • Place of Presentation: 金沢大学
• [Presentation] 超新星残骸での粒子加速と銀河宇宙線の起源 (2010)
  • Author(s): 山崎了
  • Organizer: 第140回生存圏シンポジウム/SGEPSS波動分科会「相対論的プラズマシンポジウム」
  • Place of Presentation: 九州大学筑紫キャンパス
• [Presentation] Fermi衛星で探る高エネルギー宇宙物理学 (2009)
  • Author(s): 山崎了
  • Organizer: 理論天文学懇談会シンポジウム「2010年代の理論天文学」
  • Place of Presentation: 名古屋大学
• [Presentation] Cosmic-ray Acceleration at RCW 86 (2009)
  • Author(s): Yamazaki, R.
  • Organizer: 5th Korean Astrophysics Workshop on Shock Waves, Turbulence, and Particle Acceleration
  • Place of Presentation: Pohang, Korea
• [Remarks]
• [Remarks]
  • URL: http://www.phys.aoyama.ac.jp/~ryo/papers/index.html
• [Remarks]
  • URL: http://www.phys.aoyama.ac.jp/~ryo/index.html