Study of gas dynamics of the intra-cluster medium with high spectral energy resolution
| Project/Area Number |
17K05393
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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 | Saitama University |
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Principal Investigator |
SATO Kosuke 埼玉大学, 理工学研究科, 准教授 (50453840)
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| Project Period (FY) |
2017-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 銀河団 / X線マイクロカロリメータ / X線天文学 / マイクロカロリメータ / 将来衛星計画 / X線カロリメータ / カロリメータ / 極低温検出器 |
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| Outline of Final Research Achievements |
Clusters of galaxies which consist of several thousands of galaxies, are the largest virtualized system in the Universe and filled with the intra-cluster medium of a few times 10^7 K plasma. The clusters are good probe for investigating the evolution of the Universe because the baryon fraction reflects that of the Universe. We found that the baryon fraction of clusters are consistent with that of the Universe with the X-ray, optical, and radio observations. On the other hand, we also developed X-ray micro-calorimeters on board future satellite, which realize high spectral energy resolution to observe the diffuse sources such as clusters.
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| Academic Significance and Societal Importance of the Research Achievements |
銀河団は、現在の宇宙の進化モデルである冷たいダークマターシナリオによると、衝突合体を宇宙年齢をかけて成長してきた天体である。我々は、銀河団のダークマター、通常物質であるバリオンの組成比をX線、可視光、電波観測を組み合わせて統合的にデータ解析を行なった。多波長による銀河団成長の検討は世界でも報告例は少なく、非常に重要な研究と言える。同時に、将来衛星搭載を目的としたX線マイクロカロリメータの開発を行なった。将来衛星は多ピクセル化とその読み出し技術の開発が鍵となるが、我々は世界に先駆けて高周波帯を用いた読み出し技術の開発を行なって、基礎技術の開発に成功した。
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Report
(5 results)
Research Products
(63 results)
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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] Super DIOS: future x-ray spectroscopic mission to search for dark baryons2018
Author(s)
Ohashi, T.; Ishisaki, Y.; Ezoe, Y.; Yamada, S.; Hayakawa, R.; Nunomura, K.; Sato, K.; Tawara, Y.; Mitsuishi, I.; Ohtsuka, K.; Mitsuda, K.; Yamasaki, N. Y.; Kikuchi, T.; Hayashi, T.; Muramatsu, H.; Nakashima, Y.; Ota, N.; Osato, K.; Ichinohe, Y.; Eckart, M. E.; Bandler, S. R.; Kelley, R. L.; Kilbourne, C. A.
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Journal Title
Proceedings of the SPIE
Volume: 10699
Pages: 79-79
DOI
Related Report
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[Journal Article] In-flight calibration of Hitomi Soft X-ray Spectrometer. (3) Effective area2018
Author(s)
Tsujimoto Masahiro、Okajima Takashi、Eckart Megan E、Hayashi Takayuki、Hoshino Akio、Iizuka Ryo、Kelley Richard L、Kilbourne Caroline A、Leutenegger Maurice A、Maeda Yoshitomo、Mori Hideyuki、Porter Frederick S、Sato Kosuke、Sato Toshiki、Serlemitsos Peter J、Szymkowiak Andrew、Yaqoob Tahir
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Journal Title
Publications of the Astronomical Society of Japan
Volume: 70
Issue: 2
Pages: 20-20
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Presentation] X 線分光撮像衛星 XRISM 搭載 Resolve の開発の現状 IV2019
Author(s)
Y. Ishisaki, R.L. Kelley, H. Akamatsu, H. Awaki, T.G. Bialas, G.V. Brown, M.P. Chiao, E. Costantini, J.-W. den Herder, M.J. Dipirro, M.E. Eckart, Y. Ezoe, C. Ferrigno, R. Fujimoto, A. Furuzawa, S.M. Graham, M. Grim, T. Hayashi, T. Horiuchi,以下 K. Sato,を含む34名
Organizer
日本天文学会2019秋季年会
Related Report
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[Presentation] Measurements of resonant scattering in the Perseus cluster core with Hitomi SXS2017
Author(s)
K. Sato, M. Furukawa, K. Matsushita, I. Zhuravleva, A. Ogorzalek, S. Allen, F. Paerels, M. Ohno, Y. Fukazawa, and Hitomi collaborations
Organizer
European Space Agency,Xray Universe 2017
Related Report
Int'l Joint Research
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