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titleDiscovery of non-thermal X-ray emission from radio lobes of Cygnus A
Author(jpn)矢治, 裕一; 田代, 信; 磯部, 直樹; 紀, 基樹; 永井, 洋; 小山, 翔子; 楠瀬, 正昭
Author(eng)Yaji, Yuichi; Tashiro, Makoto; Isobe, Naoki; Kino, Motoki; Asada, K; Nagai, Hiroshi; Koyama, Shoko; Kusunose, Masaaki
Author Affiliation(jpn)埼玉大学大学院理工学研究科; 埼玉大学大学院理工学研究科; 京都大学理学研究科宇宙物理学教室; 国立天文台; 国立天文台; 国立天文台; 関西学院大学理工学部物理学科
Author Affiliation(eng)Department of Physics, Saitama University; Department of Physics, Saitama University; Department of Astronomy, Kyoto University; National Astronomical Observatory of Japan; Academia Sinica Institute of Astronomy and Astrophysics; National Astronomical Observatory of Japan; National Astronomical Observatory of Japan; Department of Physics, School of Science and Technology, Kwansei Gakuin University
Issue Date2010-02-26
Japan Aerospace Exploration Agency (JAXA)
Publication title宇宙航空研究開発機構特別資料:
JAXA Special Publication: The Energetic Cosmos; from Suzaku to ASTRO-H
Start page34
End page35
Publication date2010-02-26
AbstractUsing deep Chandra ACIS observation data for Cygnus A, we report the detection of non-thermal X-rays from its radio lobes surrounded by a rich intra-cluster medium (ICM). The non-thermal X-ray is considered to be produced via an inverse Compton (IC) process. The spectral energy distribution strongly suggest that the seed photon source of the IC X-rays includes both cosmic microwave background radiation and synchrotron radiation from the lobes. The derived parameters indicate significant energy density of electrons dominance in the Cygnus A lobes under the rich ICM environment.
DescriptionMeeting Information: The 3rd Suzaku international Conference "Energetic Cosmos : from Suzaku to ASTRO-H" (June 29-July 2, 2009. Grand Park Otaru Hotel), Otaru, Hokkaido Japan
Meeting sponsors: The University of Tokyo, The Institute of Physical and Chemical Research, The Japan Society for the Promotion of Science
Keywordsgalaxies: individual (Cygnus A) - magnetic fields - radiation mechanisms: non-thermal - radio continuum: galaxies - X-ray: galaxies
Document TypeConference Paper
JAXA Category特別資料
Report NoJAXA-SP-09-008E

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