| Item type |
会議発表論文 / Conference Paper(1) |
| 公開日 |
2015-03-26 |
| タイトル |
|
|
タイトル |
Suzaku Studies of the Extremely Hard Emission Components of Magnetars |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
individual (SGR 0501+4516; 1E 1547.0-5408; 4U 0142+61) - X-rays: stars |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_5794 |
|
資源タイプ |
conference paper |
| 著者 |
榎戸, 輝揚
中川, 友進
中澤, 知洋
牧島, 一夫
Enoto, Teruaki
Rea, N.
Nakagawa, Yujin E.
Nakazawa, Kazuhiro
Sakamoto, T.
Makishima, Kazuo
Suzaku Magnetar team
|
| 著者所属 |
|
|
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東京大学理学系研究科物理学専攻 |
| 著者所属 |
|
|
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理化学研究所 |
| 著者所属 |
|
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東京大学理学系研究科物理学専攻 |
| 著者所属 |
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東京大学理学系研究科物理学専攻 |
| 著者所属（英） |
|
|
|
en |
|
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Department of Physics, University of Tokyo |
| 著者所属（英） |
|
|
|
en |
|
|
Institut de Ciencies de l'Espai (ICE-CSIC, IEEC) |
| 著者所属（英） |
|
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|
en |
|
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Cosmic Radiation Laboratory, Institute of Physical and Chemical Research (RIKEN) |
| 著者所属（英） |
|
|
|
en |
|
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Department of Physics, University of Tokyo |
| 著者所属（英） |
|
|
|
en |
|
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NASA Goddard Space Flight Center |
| 著者所属（英） |
|
|
|
en |
|
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Department of Physics, University of Tokyo |
| 著者所属（英） |
|
|
|
en |
|
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Suzaku Magnetar team |
| 出版者 |
|
|
出版者 |
宇宙航空研究開発機構 |
| 出版者（英） |
|
|
出版者 |
Japan Aerospace Exploration Agency (JAXA) |
| 書誌情報 |
宇宙航空研究開発機構特別資料:
en : JAXA Special Publication: The Energetic Cosmos; from Suzaku to ASTRO-H
巻 JAXA-SP-09-008E,
p. 186-189,
発行日 2010-02-26
|
| 会議概要（会議名, 開催地, 会期, 主催者等）（英） |
|
|
内容記述タイプ |
Other |
|
内容記述 |
The 3rd Suzaku international Conference "Energetic Cosmos : from Suzaku to ASTRO-H" (June 29-July 2, 2009. Grand Park Otaru Hotel), Otaru, Hokkaido Japan |
| 抄録（英） |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Recently, extremely hard X-ray tails have been observed in several magnetars, with photon indexes above 10 keV of gamma approximately1. The emission mechanism of this new enigmatic component has not yet been conclusively unveiled. Last two years, Suzaku has performed two target-of-opportunity (ToO) observations: the first one pointing on the newly discovered magnetar SGR 0501+4516, and the second one on the radio transient magnetar 1E 1547.0-5408, both soon after a large X-ray outburst. Suzaku successfully detected extremely hard power-law components with gamma = 0.79 and 1.54 for SGR 0501+4516 and 1E 1547.0-5408, respectively, as well as their soft X-ray thermal and non-thermal emissions. We found that the hard X-ray fluxes are comparable to or larger than the soft X-rays, and the wide-band spectrum of SGR 0501+4516 looked more like AXPs, while 1E 1547.0-5408 has a spectrum more similar to SGRs. Furthermore, combining these results with published ones, we found that the ratio of hard over soft X-ray flux of magnetars, seems to negatively (or positively) correlate with their characteristic ages (or magnetic fields). This gives a further hint for unifying SGRs and AXPs into one scheme, directly connected to decay of the magnetic activity in the evolution of magnetars. Now a magnetar key project is in progress, where 10 magnetars have already been observed to emit hard X-rays. |
| 内容記述（英） |
|
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内容記述タイプ |
Other |
|
内容記述 |
Meeting sponsors: The University of Tokyo, The Institute of Physical and Chemical Research, The Japan Society for the Promotion of Science |
| ISSN |
|
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収録物識別子タイプ |
ISSN |
|
収録物識別子 |
1349-113X |
| 書誌レコードID |
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収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11984031 |
| 資料番号 |
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内容記述タイプ |
Other |
|
内容記述 |
資料番号: AA0064574066 |
| レポート番号 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
レポート番号: JAXA-SP-09-008E |
64574066.pdf (558.2 kB)
