Study of cosmic-ray acceleration in supernova remnants using observation of GeV gamma rays

2009 Fiscal Year Final Research Report

• Project/Area Number: 19740143
• 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: KATAGIRI Hideaki Hiroshima University, 大学院・理学研究科, 助教 (50402764)
• Project Period (FY): 2007 – 2009
• Keywords: GeVガンマ線 / 超新星残骸 / フェルミ(GLAST) / 宇宙線

Research Abstract

We observed the supernova remnant W28 with the Large Area Telescope (LAT) on board the Fermi Gamma-ray Space Telescope and found GeV gamma-ray emission from the molecular clouds around W28. The gamma-ray data are well modeled with emission due to interactions between cosmic rays accelerated in the SNR and dense molecular gas, which provides new constraints on understanding particle acceleration and release in the dense medium.

Research Products

• [Journal Article] Fermi Large Area Telescope Observations of the Supernova Remnant W28 (G6. 4-0. 1) (2010)
  • Author(s): Abdo, A.A., et al. for the Fermi-LAT Collaboration (Corresponding authors: H. Katagiri, H. Tajima, T. Tanaka, Y. Uchiyama)
  • Journal Title: Accepted for publication in the Astrophysical Journal (掲載決定)
  • Peer Reviewed
• [Journal Article] Gamma-ray spectrum of RX J1713. 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 Volume495 Pages: 9-13
  • 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 Hironori, Uchiyama Hideki, Sawada Makoto, Tsuru Takeshi G., Koyama Katsuji, Katagiri Hideaki, Yamazaki Ryo, Bamba Aya, Kohri Kazunori, Mori Koji, Uchiyama Yasunobu
  • Journal Title: Publ. Astron. Soc. Japan 60 No.SP1 Pages: S163-S172
  • Peer Reviewed
• [Journal Article] Measuring the Broad-Band X-Ray Spectrum from 400eV to 40keV in the Southwest Part of the Supernova Remnant RXJ1713. 7-3946 (2008)
  • Author(s): Takahashi Tadayuki, Tanaka Takaaki, Uchiyama Yasunobu, Hiraga Junko S., Nakazawa Kazuhiro, Watanabe Shin, Bamba Aya, Hughes John P., Katagiri Hideaki, Kataoka Jun, Kokubun Motohide, Koyama Katsuji, Mori Koji, Petre Robert, Takahashi Hiromitsu, Tsuboi Yoko
  • Journal Title: Publ. Astron. Soc. Japan 60 No.SP1 Pages: S131-S140
  • Peer Reviewed
• [Journal Article] GLAST simulation study of an extended TeV-emitting supernova remnant for the origin of cosmic-ray nuclei (2007)
  • Author(s): H. Katagiri, H. Yoshida, T. Mizuno, H. Takahashi, Y. Fukazawa, T. Ohsugi
  • Journal Title: Proceedings Volume921 Pages: 397-398
• [Presentation] FERMIチーム口頭発表「フェルミ・ガンマ線宇宙望遠鏡による超新星残骸W28の観測およびガンマ線放射機構の考察」 (2010)
  • Author(s): 片桐秀明、田島宏康、山崎了, 他
  • Organizer: 日本天文学会
  • Place of Presentation: 広島大学
  • Year and Date: 2010-03-25
• [Presentation] フェルミ・ガンマ線宇宙望遠鏡による、拡散γ線放射の観測 (2009)
  • Author(s): 片桐秀明、水野恒史, 他FERMIチーム
  • Organizer: 日本天文学会
  • Place of Presentation: 大阪府立大学(口頭発表)
  • Year and Date: 20090300
• [Presentation] FERMIチーム口頭発表「フェルミ・ガンマ線宇宙望遠鏡による超新星残骸W28の観測」 (2009)
  • Author(s): 片桐秀明、田島宏康、山崎了, 他
  • Organizer: 日本天文学会
  • Place of Presentation: 山口大学
  • Year and Date: 2009-09-15
• [Presentation] FERMIチーム口頭発表「フェルミ・ガンマ線宇宙望遠鏡による超新星残骸W28の観測」 (2009)
  • Author(s): 片桐秀明、田島宏康、山崎了, 他
  • Organizer: 日本物理学会
  • Place of Presentation: 甲南大学
  • Year and Date: 2009-09-11
• [Presentation] ガンマ線天文衛星GLASTの現状と期待される成果 (2007)
  • Author(s): 片桐秀明, 他GLASTチーム
  • Organizer: 日本物理学会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-24
• [Remarks]
  • URL: http://www-heaf.hepl.hiroshima-u.ac.jp/glast/100324press/100324pressW28.html