Dynamics of hot X-ray emitting gas and feedback from galaxies with ASTRO-H
| Project/Area Number |
16K05300
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
Matsushita Kyoko 東京理科大学, 理学部第一部物理学科, 教授 (50366423)
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| Project Period (FY) |
2016-04-01 – 2020-03-31
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| Project Status |
Completed (Fiscal Year 2019)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Keywords | 銀河 / 銀河団 / フィードバック / 化学進化 / X線天文学 / 構造形成 / 銀河団ガス |
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| Outline of Final Research Achievements |
We analyze data of the Perseus cluster observed with the Hitomi X-ray satellite. The Perseus cluster is the brightest cluster in the sky, and a suitable target to study feedback from galaxies in the Perseus cluster. We studied the velocity structure, temperature, and metal abundance of the hot gas in the central region of the Perseus cluster of galaxies.
Suzaku has a low background and can detect low surface brightness emission of hot gas in the outer part of the clusters of galaxies. We measured the temperature, density, and Fe abundance of the intracluster medium up to the virial radius of the clusters and groups of galaxies. We studied the entropy, pressure, and density fluctuations in the cluster gas. We discuss the initial mass function of stars in cluster galaxies by determining the total mass of heavy elements.
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| Academic Significance and Societal Importance of the Research Achievements |
銀河団は宇宙最大の自己重力系であり、暗黒物質の重力で銀河や数千万度の高温ガスを閉じ込めており、バリオンの実験室とも言われる。銀河団銀河は我々の天の川銀河とは異なり楕円銀河が多く、我々の太陽近傍とは異なった進化を辿ってきたように見える。恒星の集団である銀河は我々の天の川銀河のような渦巻銀河と楕円体の楕円銀河が主である。銀河団を観測することにより、２種の銀河における進化の違いを調べることができる。
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Report
(5 results)
Research Products
(45 results)
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[Journal Article] Element Stratification in the Middle-Aged Type Ia Supernova Remnant G344.7-0.12020
Author(s)
Fukushima, K., Yamaguchi, H., Slane, P.O., Park, S., Katsuda, S., Sano, H., Lopez, L.A., Plucinsky, P.P., Kobayashi, S.B., and Matsushita,F
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Journal Title
Accepted for publication in Astrophysical Journal
Volume: 未定
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] An X-ray spectroscopic search for dark matter and unidentified line signatures in the Perseus cluster with Hitomi2019
Author(s)
Tamura, Takayuki; Fabian, Andrew C.; Gandhi, Poshak; Gu, Liyi; Kamada, Ayuki; Kitayama, Tetsu; Loewenstein, Michael; Maeda, Yoshitomo; Matsushita, Kyoko; McCammon, Dan; Mitsuda, Kazuhisa; Nakashima, Shinya; Porter, Scott; Pinto, Ciro; Sato, Kosuke; Tombesi, Francesco; Yamasaki, Noriko Y.
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Journal Title
Publications of the Astronomical Society of Japan
Volume: -
Issue: 3
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Unveiling the Galaxy Cluster - Cosmic Web Connection with X-ray observations in the Next Decade2019
Author(s)
Walker, Stephen; Nagai, Daisuke; Simionescu, A.; Markevitch, M.; Akamatsu, H.; Arnaud, M.; Avestruz, C.; Bautz, M.; Biffi, V.; Borgani, S.; Bulbul, E.; Churazov, E.; Dolag, K.; Eckert, D.; Ettori, S.; Fujita, Y.; Gaspari, M.; Ghirardini, V.; Kraft, R.; Lau, E. T. Mantz, A.; Matsushita, K.;
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Journal Title
Astro2020: Decadal Survey on Astronomy and Astrophysics, science white papers,no. 218; Bulletin of the American Astronomical Society,
Volume: 51
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] 「ひとみ(ASTRO-H)」SXSによるペルセウス座銀河団中心部の共鳴散乱 II2017
Author(s)
佐藤浩介, 古川愛生, 佐々木亨, 松下恭子 (東京理科大), F. Paerels(Colombia), I. Zhuravleva(Stanford), 山口弘悦 (NASA/GSFC), 中島真也 (ISAS/JAXA), 深沢泰司, 大野雅功 (広島大), 「ひとみ」コラボ レーション
Organizer
日本天文学会2017年春季年会
Place of Presentation
九州大学
Related Report
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[Presentation] X線天文衛星「ひとみ」によるペルセウス座銀河団の温度構造解析2017
Author(s)
中島真也(ISAS/JAXA), 松下恭子, 佐藤浩介 (東京理科大), 山口弘悦 (NASA/GSFC, メリーランド 大) Aurora Simionescu, 田村隆幸 (ISAS/JAXA), Marshall W. Bautz (MIT)
Organizer
日本天文学会2017年春季年会
Place of Presentation
九州大学
Related Report
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[Presentation] 「すざく」で観測した近傍銀河団・銀河群のエントロピー分布2017
Author(s)
佐々木亨, 松下恭子, 佐藤浩介, 横田佳奈, 栗山翼, 菅野祐 (東京理科大学), 赤松弘規 (SRON), 藤田裕 (大阪大学), 中澤知洋 (東京大学), 岡部信広 (広島大学), 大橋隆哉 (首都大学東京), 太田直美 (奈良女 子大学), 田村隆幸 (ISAS/JAXA), 滝沢元和 (山形大学)
Organizer
日本天文学会2017年春季年会
Place of Presentation
九州大学
Related Report
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