Influence of cosmic-rays on their host galaxies and clusters of galaxies
| Project/Area Number |
23540308
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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 |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Osaka University |
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Principal Investigator |
FUJITA Yutaka 大阪大学, 理学(系)研究科(研究院), 准教授 (10332165)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2011: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 宇宙線 / 銀河 / 銀河団 / ガンマ線 / 国際研究者交流 / イギリス / 高エネルギー宇宙物理学 |
|---|
| Research Abstract |
Cosmic-rays affect the evolution of galaxies and clusters of galaxies. I studied the acceleration and diffusion of cosmic-rays in galaxies and clusters as well as their influence on the surrounding environment in a unified framework. The main results of this study are given as follows. (1) In galaxies, most cosmic-rays are accelerated at supernova remnants. During their diffusion into interstellar space, they excite plasma waves, which interact cosmic-rays and delay their diffusion. (2) In clusters, cosmic-rays are accelerated at the central AGNs. They propagate in intracluster gas along with plasma waves and widely heat the gas.
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Report
(4 results)
Research Products
(70 results)
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[Journal Article] Discovery of an Outstanding Disk in the cD Galaxy of the Hydra A Cluster2013
Author(s)
Y. Fujita, N. Okabe, K. Sato, T. Tamura, S. Matsushita, H. Hirashita, M. Nakamura, K. Matsushita, K. Nakazawa, & M. Takizawa
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Journal Title
Publications of the Astronomical Society of Japan
Volume: Volume 65, Issue 6
Issue: 6
Pages: 5-5
DOI
Related Report
Peer Reviewed
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[Journal Article] Multi-wavelength Studies of Spectacular Ram-pressure Stripping of a Galaxy. II. Star Formation in the Tail2013
Author(s)
Yagi, M., Gu, L., Fujita, Y., Nakazawa, K., Akahori, T., Hattori, T., Yoshida, M., and Makishima, K.
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Journal Title
The Astrophysical Journal
Volume: 778
Issue: 2
Pages: 91-91
DOI
Related Report
Peer Reviewed
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[Journal Article] Multi-wavelength Studies of Spectacular Ram Pressure Stripping of a Galaxy: Discovery of an X-Ray Absorption Feature2013
Author(s)
Gu, L., Yagi, M., Nakazawa, K., Yoshida, M., Fujita, Y., Hattori, T., Akahori, T., and Makishima, K.
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Journal Title
The Astrophysical Journal Letters
Volume: 777
Issue: 2
Pages: 36-36
DOI
Related Report
Peer Reviewed
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[Journal Article] Suzaku observations of the Hydra A cluster out to the virial radius2012
Author(s)
T. Sato, T. Sasaki, K. Matsushita, E. Sakuma, K. Sato, Y. Fujita, N. Okabe, Y. Fukazawa, K. Ichikawa, M. Kawaharada, K. Nakazawa, T. Ohashi, N. Ota, M. Takizawa, & T. Tamura
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Journal Title
Publications of the Astronomical Society of Japan
Volume: Volume 64, Issue 5
Issue: 5
Pages: 1-1
DOI
NAID
Related Report
Peer Reviewed
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