Influence of cosmic-rays on their host galaxies and clusters of galaxies

2013 Fiscal Year Final Research Report

• Project/Area Number: 23540308
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Osaka University
• Principal Investigator: FUJITA Yutaka 大阪大学, 理学(系)研究科(研究院), 准教授 (10332165)
• Project Period (FY): 2011 – 2013
• Keywords: 宇宙線 / 銀河 / 銀河団

Research Abstract

Cosmic-rays affect the evolution of galaxies and clusters of galaxies. I studied the acceleration and diffusion of cosmic-rays in galaxies and clusters as well as their influence on the surrounding environment in a unified framework. The main results of this study are given as follows. (1) In galaxies, most cosmic-rays are accelerated at supernova remnants. During their diffusion into interstellar space, they excite plasma waves, which interact cosmic-rays and delay their diffusion. (2) In clusters, cosmic-rays are accelerated at the central AGNs. They propagate in intracluster gas along with plasma waves and widely heat the gas.

Research Products

• [Journal Article] The Environment around the Young Massive Star Cluster RSGC 1 and HESS J1837-069 (2014)
  • Author(s): Y. Fujita, H. Nakanishi, E. Muller, N. Kobayashi, M. Saito, C. Yasui, H. Kikuchi, & K. Yoshinaga
  • Journal Title: Publications of the Astronomical Society of Japan Volume: Volume 66, Issue 1 Pages: 5
  • DOI: 10.1093/pasj/pst020
  • Peer Reviewed
• [Journal Article] Discovery of an Outstanding Disk in the cD Galaxy of the Hydra A Cluster (2013)
  • Author(s): Y. Fujita, N. Okabe, K. Sato, T. Tamura, S. Matsushita, H. Hirashita, M. Nakamura, K. Matsushita, K. Nakazawa, & M. Takizawa
  • Journal Title: Publications of the Astronomical Society of Japan Volume: Volume 65, Issue 6 Pages: 5
  • DOI: 10.1093/pasj/65.6.L15
  • Peer Reviewed
• [Journal Article] Multi-Wavelength Studies of Spectacular Ram Pressure Stripping of a Galaxy. II. Star Formation in the Tail (2013)
  • Author(s): M. Yagi, L. Gu, Y. Fujita, K. Nakazawa, T. Akahori, T. Hattori, M. Yoshida, & K. Makishima
  • Journal Title: The Astrophysical Journal Volume: Volume 778, Issue 2 Pages: 17
  • DOI: 10.1088/0004-637X/778/2/91
  • Peer Reviewed
• [Journal Article] Multi-Wavelength Studies of Spectacular Ram Pressure Stripping of a Galaxy. I. Discovery of an X-ray Absorption Feature (2013)
  • Author(s): L. Gu, M. Yagi, K. Nakazawa, M. Yoshida, Y. Fujita, T. Hattori, T. Akahori, & K. Makishima
  • Journal Title: The Astrophysical Journal Letters Volume: Volume 777, Issue 2 Pages: 5
  • DOI: 10.1088/2041-8205/777/2/L36
  • Peer Reviewed
• [Journal Article] The Fermi Bubbles as a Scaled-up Version of Supernova Remnants (2013)
  • Author(s): Y. Fujita, Y. Ohira, & Y. Yamazaki
  • Journal Title: The Astrophysical Journal Letters Volume: Volume 775, Issue 1 Pages: 5
  • DOI: 10.1088/2041-8205/775/1/L20
  • Peer Reviewed
• [Journal Article] Stability Analysis for Cosmic-Ray Heating of Cool Cores in Galaxy Clusters (2013)
  • Author(s): Y. Fujita, S. Kimura, & Y. Ohira
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: Volume 432, Issue 2 Pages: 1434-1443
  • DOI: 10.1093/mnras/stt563
  • Peer Reviewed
• [Journal Article] Entropy at the Outskirts of Galaxy Clusters as Implications for Cosmological Cosmic-Ray Acceleration (2013)
  • Author(s): Y. Fujita, Y. Ohira, & Y. Yamazaki
  • Journal Title: The Astrophysical Journal Letters Volume: Volume 767, Issue 1 Pages: 4
  • DOI: 10.1088/2041-8205/767/1/L4
  • Peer Reviewed
• [Journal Article] Suzaku observations of Abell 1835 outskirts : Deviation from hydrostatic equilibrium (2013)
  • Author(s): K. Ichikawa, K. Matsushita, N. Okabe, K. Sato, Y.-Y. Zhang, A. Finoguenov, Y. Fujita, Y. Fukazawa, M. Kawaharada, K. Nakazawa, T. Ohashi, N. Ota, M. Takizawa, T. Tamura, & K. Umetsu
  • Journal Title: The Astrophysical Journal Volume: Volume 766, Issue 2 Pages: 19
  • DOI: 10.1088/0004-637X/766/2/90
  • Peer Reviewed
• [Journal Article] Radio Mini-Halo Emission from Cosmic Rays in Galaxy Clusters and Heating of the Cool Cores (2012)
  • Author(s): Y. Fujita, & Y. Ohira
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: Volume 428, Issue 1 Pages: 599
  • DOI: 10.1093/mnras/sts050
  • Peer Reviewed
• [Journal Article] Suzaku observations of the Hydra A cluster out to the virial radius (2012)
  • Author(s): T. Sato, T. Sasaki, K. Matsushita, E. Sakuma, K. Sato, Y. Fujita, N. Okabe, Y. Fukazawa, K. Ichikawa, M. Kawaharada, K. Nakazawa, T. Ohashi, N. Ota, M. Takizawa, & T. Tamura
  • Journal Title: Publications of the Astronomical Society of Japan Volume: Volume 64, Issue 5 Pages: 1
  • DOI: 10.1093/pasj/64.5.95
  • Peer Reviewed
• [Journal Article] Dissipative phenomena in extended-bodies interactions I : Methods Dwarf galaxies of the Local Group and their synthetic CMDs (2012)
  • Author(s): S. Pasetto, G. Bertelli, E.K. Grebel, C. Chiosi, & Y. Fujita
  • Journal Title: Astronomy & Astrophysics Volume: Volume 542 Pages: 15
  • DOI: 10.1051/0004-6361/201117612
  • Peer Reviewed
• [Journal Article] Non-thermal Emissions from Cool Cores Heated by Cosmic-Rays in Galaxy Clusters (2012)
  • Author(s): Y. Fujita, & Y. Ohira
  • Journal Title: The Astrophysical Journal Volume: Volume 746, Issue 1 Pages: 7
  • DOI: 10.1088/0004-637X/746/1/53
  • Peer Reviewed
• [Journal Article] Star Formation in the Cometary Tails Associated with Cluster Galaxies (2011)
  • Author(s): T. Yamagami, & Y. Fujita
  • Journal Title: Publications of the Astronomical Society of Japan Volume: Volume 63, Issue 6 Pages: 1165-1169
  • URL: http://pasj.asj.or.jp/v63/n6/630611/630611-frame.htm
  • Peer Reviewed
• [Journal Article] Stable Heating of Cluster Cooling Flows by Cosmic-Ray Streaming (2011)
  • Author(s): Y. Fujita, & Y. Ohira
  • Journal Title: The Astrophysical Journal Volume: Volume 738, Issue 2 Pages: 7
  • DOI: 10.1088/0004-637X/738/2/182
  • Peer Reviewed
• [Journal Article] Alfvén wave amplification and self-containment of cosmic rays escaping from a supernova remnant (2011)
  • Author(s): Y. Fujita, F. Takahara, Y. Ohira, & K. Iwasaki
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: Volume 415, Issue 4 Pages: 3434-3438
  • DOI: 10.1111/j.1365-2966.2011.18980.x
  • Peer Reviewed
• [Presentation] 電波銀河Hydra Aで見つかった巨大ガス円盤 (2014)
  • Author(s): 藤田裕, 岡部信広, 佐藤浩介, 松下恭子, 田村隆幸, 松下聡樹, 平下博之, 中村雅徳, 中澤知洋, 滝沢元和
  • Organizer: 日本天文学会2014年春季年会
  • Place of Presentation: 国際基督教大学
  • Year and Date: 20140319-22
• [Presentation] ガンマ線散開星団RSGC 1 が置かれている環境 (2014)
  • Author(s): 藤田裕, 菊地洋輝, 吉永圭吾, 中西裕之, Erik Muller, 齋藤正雄, 小林尚人, 安井千香子
  • Organizer: 日本天文学会2014年春季年会
  • Place of Presentation: 国際基督教大学
  • Year and Date: 20140319-22
• [Presentation] The Fermi Bubbles as a Scaled-up Version of Supernova Remnants (2014)
  • Author(s): 藤田裕, 大平豊, 山崎了
  • Organizer: 日本天文学会2014年春季年会
  • Place of Presentation: 国際基督教大学
  • Year and Date: 20140319-22
• [Presentation] Search of dust lanes in massive elliptical galaxies (2014)
  • Author(s): Y. Fujita
  • Organizer: Quasar science with HSC : Toward the first results
  • Place of Presentation: ASIAA, Taiwan
  • Year and Date: 20140114-16
• [Presentation] The Fermi Bubbles as a Scaled-up Version of Supernova Remnants (2013)
  • Author(s): 藤田裕
  • Organizer: 理論懇シンポジウム
  • Place of Presentation: 東京大学
  • Year and Date: 20131225-27
• [Presentation] The Fermi Bubbles as a Scaled-up Version of Supernova Remnants (2013)
  • Author(s): 藤田裕
  • Organizer: 高エネルギー宇宙物理学研究会
  • Place of Presentation: パレス松州(宮城県)
  • Year and Date: 20131117-19
• [Presentation] The Fermi Bubbles as a Scaled-up Version of Supernova Remnants (2013)
  • Author(s): Y. Fujita
  • Organizer: X-raying the Gamma-Ray Universe
  • Place of Presentation: Hakone, Japan
  • Year and Date: 20131104-06
• [Presentation] Heating of Galaxy Clusters by Cosmic-Rays (2013)
  • Author(s): Y. Fujita
  • Organizer: From black holes to cosmic rays
  • Place of Presentation: Les Houches, France
  • Year and Date: 20131014-18
• [Presentation] 銀河団中心銀河での AGN の大規模活動 (2013)
  • Author(s): 藤田裕
  • Organizer: 研究会「ALMA で探るブラックホール高エネルギー現象」
  • Place of Presentation: 国立天文台
  • Year and Date: 20130925-26
• [Presentation] 銀河団の電波観測から探る銀河団の宇宙線加熱 (2013)
  • Author(s): 藤田裕
  • Organizer: 日本SKA サイエンス会議「宇宙磁場」
  • Place of Presentation: 国立天文台水沢VLBI 観測所
  • Year and Date: 20130913-14
• [Presentation] 宇宙線加速が銀河団のエントロピー分布に与える影響 (2013)
  • Author(s): 藤田裕, 大平豊, 山崎了
  • Organizer: 日本天文学会2013年秋季年会
  • Place of Presentation: 東北大学
  • Year and Date: 20130910-12
• [Presentation] The Fermi Bubbles as a Scaled-up Version of Supernova Remnants and Predictions in the TeV Band (2013)
  • Author(s): 藤田裕
  • Organizer: 高エネルギーガンマ線でみる極限宇宙2013
  • Place of Presentation: 東京大学宇宙線研究所
  • Year and Date: 20130903-04
• [Presentation] 銀河団コアの宇宙線加熱の安定性 (2013)
  • Author(s): 藤田裕, 木村創大, 大平豊
  • Organizer: 日本天文学会2013年春季年会
  • Place of Presentation: 埼玉大学
  • Year and Date: 20130320-23
• [Presentation] 銀河団コアの非熱的現象 (2013)
  • Author(s): 藤田裕
  • Organizer: 研究会「銀河団の物理」
  • Place of Presentation: 東京理科大学
  • Year and Date: 2013-12-28
• [Presentation] Generation of Magnetic Fields in the Universe through the Weibel instability (2012)
  • Author(s): Y. Fujita
  • Organizer: Axion Cosmophysics
  • Place of Presentation: KEK, Tsukuba
  • Year and Date: 20121106-09
• [Presentation] 宇宙線による銀河団の加熱 (2012)
  • Author(s): 藤田裕
  • Organizer: 高エネルギー宇宙物理学研究会
  • Place of Presentation: 首都大学東京
  • Year and Date: 20121004-06
• [Presentation] 銀河団コアを加熱する宇宙線からの電波放射 (2012)
  • Author(s): 藤田裕, 大平豊
  • Organizer: 日本天文学会2012年秋季年会
  • Place of Presentation: 大分大学
  • Year and Date: 20120919-21
• [Presentation] Stable Heating of Cluster Cool Cores by Cosmic-Ray Streaming (2012)
  • Author(s): Y. Fujita
  • Organizer: IAU General Assembly
  • Place of Presentation: Beijing, China
  • Year and Date: 20120820-24
• [Presentation] Heating of cluster cooling cores by cosmic-ray streaming (2012)
  • Author(s): Y. Fujita
  • Organizer: BLACK HOLE FEEDBACK 2012
  • Place of Presentation: Dartmouth College, USA
  • Year and Date: 20120730-0830
• [Presentation] 銀河団コアからの電波放射 (2012)
  • Author(s): 藤田裕
  • Organizer: 日本SKAサイエンス会議「宇宙磁場」2012
  • Place of Presentation: 福岡県志賀島
  • Year and Date: 20120625-26
• [Presentation] 宇宙線で加熱された銀河団コアからの放射 (2012)
  • Author(s): 藤田裕, 大平豊
  • Organizer: 日本天文学会2012年春季年会
  • Place of Presentation: 龍谷大学
  • Year and Date: 20120319-22
• [Presentation] 銀河団の宇宙線からの放射 (2011)
  • Author(s): 藤田裕
  • Organizer: 銀河団研究会
  • Place of Presentation: 箱根強羅静雲荘
  • Year and Date: 20111218-19
• [Presentation] 銀河団の宇宙線による加熱 (2011)
  • Author(s): 藤田裕
  • Organizer: 高エネルギー宇宙物理研究会
  • Place of Presentation: 大阪大学
  • Year and Date: 20111215-17
• [Presentation] Escape of Cosmic Rays from Supernova Remnants (2011)
  • Author(s): Y. Fujita
  • Organizer: High Energy Astroparticle Physics 2011
  • Place of Presentation: KEK, Tsukuba
  • Year and Date: 20111113-15
• [Presentation] 銀河団の非熱的輻射とCTA (2011)
  • Author(s): 藤田裕
  • Organizer: マルチメッセンジャー宇宙物理学とCTA
  • Place of Presentation: 東京大学宇宙線研究所
  • Year and Date: 20110929-1001
• [Presentation] 銀河の尾の中での星形成 (2011)
  • Author(s): 山上高宏, 藤田裕
  • Organizer: 日本天文学会2011年秋季年会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 20110919-22
• [Presentation] Cosmic-Ray Streaming による銀河団コアの加熱 (2011)
  • Author(s): 藤田裕, 大平豊
  • Organizer: 日本天文学会2011年秋季年会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 20110919-22
• [Presentation] 銀河団コアの宇宙線による加熱 (2011)
  • Author(s): 藤田裕
  • Organizer: 第11回高宇連研究会
  • Place of Presentation: 早稲田大学
  • Year and Date: 20110809-11
• [Presentation] Alfven Wave Amplification and Self-Containment of Cosmic-Rays Escaping from a Supernova Remnant (2011)
  • Author(s): Y. Fujita
  • Organizer: Cosmic rays and their interstellar medium environment
  • Place of Presentation: Montpellier, France
  • Year and Date: 20110626-0701
• [Remarks]
  • URL: http://vega.ess.sci.osaka-u.ac.jp/~fujita/index.html