| Project/Area Number |
15K17610
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Astronomy
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| Research Institution | Japan Aerospace EXploration Agency |
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Principal Investigator |
UEDA Shutaro 国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 宇宙航空プロジェクト研究員 (40748258)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 銀河団 / X線天文学 / X線天文衛星ひとみ / 多波長観測 / 銀河団ガス / 銀河団の観測的研究 |
|---|
| Outline of Final Research Achievements |
This research focused on merging galaxy clusters to understand the evolution of large-scale structure through multi-wavelength observations done by X-ray, optical, and radio. In this research, we found a 100-kpc-scale gas motion in the well-known dynamically relaxed galaxy clusters. This indicates that the mass growth continuously takes plane even though galaxy cluster seems to be relaxed. We furthermore succeeded in measuring a velocity field of the intracluster medium in the entire core of the X-ray brightest cluster, the Perseus cluster, using Hitomi X-ray Observatory for the first time. In addition, we analyzed the data taken by Chandra, Atacama Large Millimeter/submillimeter Array (ALMA), and Hubble Space Telescope for the well-known merging clusters and revealed the thermodynamical properties of intracluster medium and geometry of mergers.
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