Propagation of the Galactic Cosmic Ray Considering the Discreteness of Cosmic Ray Sources

• Project/Area Number: 26800145
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Ibaraki National College of Technology
• Principal Investigator: MIYAKE Shoko 茨城工業高等専門学校, 国際創造工学科, 准教授 (00613027)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
• Keywords: 銀河宇宙線 / 超新星残骸 / 銀河磁場 / 銀河系 / 太陽圏 / 数値実験

Outline of Final Research Achievements

The galactic cosmic ray (GCR) observed at the Earth reveals various physical phenomena in the origin of the galactic cosmic rays (supernova remnants) and/or in the Galaxy. In order to obtain the crucial key for understanding the propagation of the GCRs in the Galaxy and an anomalous increase of the GCR positrons, we have developed the numerical model of the GCR propagation in the Galaxy by considering the discreteness of GCR sources and an anisotropic diffusion.

Research Products

• [Journal Article] Anisotropic diffusion of high-energy cosmic-ray electrons in the Galaxy (2017)
  • Author(s): S. Miyake
  • Journal Title: Proceedings of Science (ICRC2017) Volume: 267 Pages: 1-8
• [Journal Article] Charge-sign dependence in the solar modulation during the solar cycle 23 (2017)
  • Author(s): S. Miyake
  • Journal Title: Proceedings of Science (ICRC2017) Volume: 018 Pages: 1-8
• [Journal Article] Cosmic Ray Modulation and Radiation Dose of Aircrews During the Solar Cycle 24/25 (2017)
  • Author(s): Shoko Miyake, Ryuho Kataoka, and Tatsuhiko Sato
  • Journal Title: Space Weather Volume: 印刷中 Issue: 4 Pages: 589-605
  • DOI: 10.1002/2016sw001588
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Effect of the regular galactic magnetic field on the propagation of galactic cosmic rays in the Galaxy (2015)
  • Author(s): S. Miyake and S. Yanagita
  • Journal Title: Proceedings of Science (ICRC2015) Volume: 491 Pages: 1-8
• [Journal Article] A stochastic simulation of the propagation of Galactic cosmic rays reflecting the discreteness of cosmic ray sources (2015)
  • Author(s): S.Miyake, H.Muraishi, and S.Yanagita
  • Journal Title: Astronomy & Astrophysics Volume: 573 Pages: A134-A134
  • DOI: 10.1051/0004-6361/201424442
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Anisotropic diffusion of high-energy cosmic-ray electrons in the Galaxy (2017)
  • Author(s): S. Miyake
  • Organizer: 35th International Cosmic Ray Conference
  • Int'l Joint Research
• [Presentation] Charge-sign dependence in the solar modulation during the solar cycle 23 (2017)
  • Author(s): S. Miyake
  • Organizer: 35the International Cosmic Ray Conference
  • Int'l Joint Research
• [Presentation] 規則的銀河磁場が太陽系近傍の超新星残骸を起源とする銀河宇宙線電子の銀河系内伝播に及ぼす影響 (2015)
  • Author(s): 三宅晶子、柳田昭平
  • Organizer: 日本物理学会２０１５年秋季大会
  • Place of Presentation: 大阪市立大学
  • Year and Date: 2015-09-26
• [Presentation] Effect of the regular galactic magnetic field on the propagation of galactic cosmic rays in the Galaxy (2015)
  • Author(s): S. Miyake and S. Yanagita
  • Organizer: The 34th International Cosmic Ray Conference
  • Place of Presentation: the Hague, the Netherlands
  • Year and Date: 2015-07-30
  • Int'l Joint Research
• [Presentation] 規則的銀河磁場が銀河宇宙線伝播に及ぼす影響：拡散係数の磁場依存性 (2015)
  • Author(s): 三宅晶子、柳田昭平
  • Organizer: 日本物理学会第７０回年次大会
  • Place of Presentation: 早稲田大学
  • Year and Date: 2015-03-21
• [Presentation] 規則的銀河磁場が銀河宇宙線伝播過程に及ぼす影響 (2014)
  • Author(s): 三宅晶子、柳田昭平
  • Organizer: 日本物理学会２０１４年秋季大会
  • Place of Presentation: 佐賀大学
  • Year and Date: 2014-09-19
• [Remarks] 三宅准教授ら、航空機高度での宇宙線被ばく量を2024年まで予測
  • URL: http://www.ibaraki-ct.ac.jp/?page_id=8982&preview=true
• [Funded Workshop] The 34th International Cosmic Ray Conference (2015)
  • Place of Presentation: the Hague, the Netherlands
  • Year and Date: 2015-07-30