| アイテムタイプ |
会議発表論文 / Conference Paper(1) |
| 公開日 |
2015-03-26 |
| タイトル |
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タイトル |
Suzaku Detection of the ICM Emission out to the Virial Radius in Abell 1689 |
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言語 |
en |
| 言語 |
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言語 |
eng |
| キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
galaxies: clusters: general - galaxies: clusters: individual (Abell 1689) - intergalacticmedium - X-rays: galaxies: clusters |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_5794 |
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資源タイプ |
conference paper |
| 著者 |
川原田, 円
中澤, 知洋
滝沢, 元和
Kawaharada, Madoka
Okabe, Nobuhiro
Nakazawa, Kazuhiro
Takizawa, Motokazu
Umetsu, Keiich
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| 著者所属 |
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理化学研究所 |
| 著者所属 |
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東京大学理学系研究科物理学専攻 |
| 著者所属 |
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山形大学物理学科 |
| 著者所属（英） |
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en |
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RIKEN (Institute of Physical and Chemical Research) |
| 著者所属（英） |
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en |
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Institute of Astronomy and Astrophysics, Academia Sinica |
| 著者所属（英） |
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en |
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Department of Physics, The University of Tokyo |
| 著者所属（英） |
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en |
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Department of Physics, Yamagata University |
| 著者所属（英） |
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en |
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Institute of Astronomy and Astrophysics, Academia Sinica |
| 出版者 |
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出版者 |
宇宙航空研究開発機構 |
| 出版者（英） |
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出版者 |
Japan Aerospace Exploration Agency (JAXA) |
| 書誌情報 |
宇宙航空研究開発機構特別資料:
en : JAXA Special Publication: The Energetic Cosmos; from Suzaku to ASTRO-H
巻 JAXA-SP-09-008E,
p. 100-101,
発行日 2010-02-26
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| 会議概要（会議名, 開催地, 会期, 主催者等）（英） |
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内容記述タイプ |
Other |
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内容記述 |
The 3rd Suzaku international Conference "Energetic Cosmos : from Suzaku to ASTRO-H" (June 29-July 2, 2009. Grand Park Otaru Hotel), Otaru, Hokkaido Japan |
| 抄録（英） |
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内容記述タイプ |
Other |
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内容記述 |
Using Suzaku, we detected X-ray emission from the intra cluster medium (ICM) in Abell 1689 out to its Virial radius (15.8 min = 2.9 Mpc). The ICM temperature gradually decreases from approximately 9 keV at the center to approximately 2 keV at outskirts. Moreover, we found that the temperature of a northeast region at the Virial radius is higher (approximately 5 keV) than the other azimuth regions at the same distances, and that X-ray surface brightness at the 5 keV region is approximately 2 times higher than that of the other regions. Since the cooling function at 5 keV is approximately 50 % larger than that at 2 keV assuming the metal abundance is 0.1 solar, the difference of ICM densities between the 5 keV and 2 keV regions is not large, at most approximately 20 %. By combining the temperature and ICM density, entropy of the 5 keV region becomes approximately 2 times larger than those of the other azimuth regions. This suggests that some heating process such as cosmological structure formation shock or sub-cluster mergers in the northwest region. The Sloan Digital Sky Survey (SDSS) data, however, shows no significant luminosity excess in i band in this region. Now we are comparing the temperature profile we obtained with that derived from the mass profile of Abell 1689 which has been obtained precisely by strong and weak lensing analyses of Subaru/Suprime-Cam and HST/ACS. By this analysis, the hydrostatic equlibrium around the Virial radius will be tested. |
| 内容記述（英） |
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内容記述タイプ |
Other |
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内容記述 |
Meeting sponsors: The University of Tokyo, The Institute of Physical and Chemical Research, The Japan Society for the Promotion of Science |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
1349-113X |
| 書誌レコードID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA11984031 |
| 資料番号 |
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内容記述タイプ |
Other |
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内容記述 |
資料番号: AA0064574036 |
| レポート番号 |
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内容記述タイプ |
Other |
|
内容記述 |
レポート番号: JAXA-SP-09-008E |
64574036.pdf (169.8 kB)
