2010 Fiscal Year Final Research Report
Study of Interactions between Galaxies and Intra-Cluster Plasmas
Project/Area Number |
18104004
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Research Category |
Grant-in-Aid for Scientific Research (S)
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Allocation Type | Single-year Grants |
Research Field |
Astronomy
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Research Institution | The University of Tokyo |
Principal Investigator |
MAKISHIMA Kazuo The University of Tokyo, 大学院・理学系研究科, 教授 (20126163)
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Co-Investigator(Kenkyū-buntansha) |
NAKAZAWA Kazuhiro 東京大学, 大学院・理学系研究科, 講師 (50342621)
HIRAGA Junko 東京大学, 大学院・理学系研究科, 助教 (00446527)
INADA Naohisa 東京大学, 大学院・理学系研究科, 特任研究員 (20462658)
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Co-Investigator(Renkei-kenkyūsha) |
KOKUBUN Motohide 独立行政法人宇宙航空研究開発機構, 宇宙科学研究所, 准教授 (50334248)
KAWAHARADA Madoka 独立行政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 (50462677)
KODAMA Tadayuki 大学共同利用機関法人自然科学研究機構, 国立天文台, 准教授 (80343101)
MATSUSHITA Kyoko 東京理科大学, 理学部, 教授 (50366423)
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Project Period (FY) |
2006 – 2010
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Keywords | X線天文学 / 銀河団 / プラズマ物理学 / 「すざく」衛星 / 光学観測 / 粒子加速 / 雷雲ガンマ線 |
Research Abstract |
The present research aimed at demonstrating our conjecture, that galaxies in a galaxy cluster must be interacting strongly with the hot plasma filling the cluster volume, and hence are falling to the center. Through X-ray observations using Suzaku and other means, we successfully revealed the presence of a large-scale ordered magnetic structure in the center of some clusters, and obtained evidence of plasma heating process therein. Incorporating optical data, we also obtained evidence that galaxies have actually been falling to the center of the cluster over the cosmological time scale.
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Research Products
(66 results)
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[Journal Article] Metallicity of the Fossil Group NGC 1550 Observed with Suzaku2010
Author(s)
Sato, K., Kawaharada, M., Nakazawa, K., Matsushita, K.,Ishisaki, Y., Yamasaki, N.Y., Ohashi, T.
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Journal Title
Publ.Astr. Soc.Japan 62
Pages: 1445-1454
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[Journal Article] Suzaku Constraints on Soft and Hard Excess Emissions from Abell 21992010
Author(s)
Kawaharada, M., Makishima K., Kitaguchi, T., Okuyama, S., Nakazawa, K., Fukazawa, Y.
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Journal Title
Publ.Astr.Soc.Japan 62
Pages: 115-129
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[Journal Article] Suzaku Observation of A1689 : Anisotropic Temperature and Entropy Distributions Associated with the Large-scale Structure2010
Author(s)
Kawaharada, M., M., Matsushita, K., Fukazawa, Y., Hamana, T., Miyazaki, S., Nakazawa, K., Ohashi, T.
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Journal Title
Astrophys.J. 714
Pages: 423-441
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[Journal Article] Constraint of Non-Thermal X-Ray Emission from the On-Going Merger Cluster Abell 3376 with Suzaku2009
Author(s)
Kawano, N., Fukazawa, Y., Nishino, S., Nakazawa, K., Kitaguchi, T.,Makishima K.,Takahashi, T., Kokubun, M.,
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Journal Title
Publ.Astr.Soc.Japan 61
Pages: S377-S386
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[Journal Article] X-ray Diagnostics of Thermal Conditions of the Hot Plasmas in the Centaurus Cluster2009
Author(s)
Takahashi, I., Kawaharada, M., Makishima K., Matsushita, K., Kokubun, M., Nakazawa, K.
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Journal Title
Astrophys.J. 701
Pages: 377-395
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[Journal Article] A Suzaku Search for Nonthermal Emission at Hard X-Ray Energies in the Coma Cluster2009
Author(s)
Wik, D.R., Sarazin, C.L., Finoguenov, A., Matsushita, K., Nakazawa, K., Clarke, T.
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Journal Title
Astrophys.J. 696
Pages: 1700-1711
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[Journal Article] Suzaku Observation of the New Soft Gamma Repeater SGR 0501+4516 in Outburst2009
Author(s)
Enoto, T., Nakagawa, Y. E., Rea, N., Esposito, P., Gotz, D., Hurley, K., Israel, G.L., Kokubun, M., Makishima K.
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Journal Title
Astrophys.J.Lett. 696
Pages: L122-L126
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[Journal Article] A Galaxy Merger Scenario for the NGC 1550 Galaxy from Metal Distributions in the X-Ray Emitting Plasma2009
Author(s)
Kawaharada, M., Makishima K., Kitaguchi, T., Okuyama, S., Nakazawa, K., Matsushita, K., Fukazawa, Y.
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Journal Title
Astrophys.J. 691
Pages: 971-983
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[Journal Article] Observation of an Energetic Radiation Burstfrom Mountain- Top Thunderclouds2009
Author(s)
Tsuchiya, H., Enoto, T., Torii, T., Nakazawa, K., Yuasa, T., Torii, S., Fukuyama, T., Yamaguchi, T., Kato, H., Okano, M., Takita, M., Makishima K.
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Journal Title
Phys.Rev.Lett. 102
Pages: id.255003
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[Journal Article] In-Orbit Timing Calibration of the Hard X-Ray Detector on Board Suzaku2008
Author(s)
Terada, Y., Enoto, T., Kawaharada, M., Kokubun, M., Makishima K., Nakazawa, K., et al.
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Journal Title
Publ.Astr.Soc.Japan 60
Pages: S25-S34
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[Journal Article] Detection of High-Energy Gamma Rays from Winter Thunder clouds2008
Author(s)
Tsuchiya, H., Enoto, T., Yamada, S., Yuasa, T., Kawaharada, M., Kitaguchi, T., Kokubun, M., Kato, H., Okano, M., Nakamura, S., Makishima K.
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Journal Title
Phys.Rev.Lett. 99
Pages: id.165002
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[Journal Article] Suzaku Observations of the Centaurus Cluster : Absence of Bulk Motions in the ICM2007
Author(s)
Ota, N., Fukazawa, Y., Fabian, A.C., Kanemaru, T., Kawaharada, M., Kawano, N., Kelley, R., Kitaguchi, T., Makishima K.
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Journal Title
Publ.Astr.Soc.Japan 59
Pages: S351-S359
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[Journal Article] X-Ray Study of Temperature and Abundance Profiles of the Cluster of Galaxies Abell 1060 with Suzaku2007
Author(s)
Sato, K., Kitaguchi, T., Kawaharada, M., Kokubun, M., Makishima K., Ota, N., Nakazawa, K.
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Journal Title
Publ.Astr.Soc.Japan 59
Pages: 299-317
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[Journal Article] Suzaku Survey for Non-Thermal Hard X-Ray Emission from Clusters of Galaxies2007
Author(s)
Nakazawa, K., Kawano, N., Fukazawa, Y., Egawa, C., Kitaguchi, T., Kawaharada, M., Makishima K., Ota, N., Tokoi, K.
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Journal Title
Prog.Theor.Phys.Suppl. 169
Pages: 45-48
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[Journal Article] A 1-Dimensional γ-ray Position Sensor based on GSO : CeScintillators Coupled to a Si Strip Detector2007
Author(s)
Sato, M., Miyawaki, R., Makishima K., Takashima, T., Tanaka, T., Nakazawa, K., Takahashi, T., Shimura, N., Ishibashi, H.
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Journal Title
Nucl.Inst.Meth.A 579
Pages: 239-242
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[Presentation] 日本海の冬季雷雲に付随したX線およびガンマ線の観測2007
Author(s)
土屋晴文, 榎戸輝揚, 山田真也, 湯浅孝行, 川原田円, 北口貴雄, 国分紀秀, 岡野眞治, 加藤博, 中村聡史, 牧島一夫
Organizer
日本物理学会・秋季大会24aZJ-9
Place of Presentation
北海道大学レビューセッション
Year and Date
20070921-20070924
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