JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
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titleUniting Burst and Quiescent Emission Mechanisms of Magnetars
Author(jpn)中川, 友進; 吉田, 篤正; 山岡, 和貴; 柴崎, 徳明; 榎戸, 輝揚; 坂本, 貴紀; 牧島, 一夫
Author(eng)Nakagawa, Yujin E.; Yoshida, Atsumasa; Hurley, Kevin; Yamaoka, Kazutaka; Shibazaki, Noriaki; Enoto, Teruaki; Sakamoto, Takanori; Makishima, Kazuo; HETE-2 Team; Suzaku SGR/AXP ToO Team
Author Affiliation(jpn)理化学研究所; 青山学院大学; 青山学院大学; 立教大学; 東京大学; 東京大学
Author Affiliation(eng)Institute of Physical and Chemical Research (RIKEN); Aoyama Gakuin University; University of California at Berkeley; Aoyama Gakuin University; Rikkyo University; University of Tokyo; NASA Goddard Space Flight Center; University of Tokyo; HETE-2 Team; Suzaku SGR/AXP ToO Team
Issue Date2010-02-26
Japan Aerospace Exploration Agency (JAXA)
Publication title宇宙航空研究開発機構特別資料:
JAXA Special Publication: The Energetic Cosmos; from Suzaku to ASTRO-H
Start page220
End page221
Publication date2010-02-26
AbstractSpectral studies of both quiescent emission (approximately 10(exp -11) erg cm(exp -2) s(exp -1) in 2-10 keV) and bursts (approximately 10(exp -6) erg cm(exp -2) s(exp -1) in 2-100 keV) are presented for 11 magnetar candidates using HETE-2, Suzaku, XMMNewton, Chandra and Swift data. Spectra of the quiescent emission and the bursts for most magnetar candidates are reproduced by a photoelectrically absorbed two blackbody function (2BB). There is a strong linear correlation between lower and higher temperatures of 2BB, irrespective of objects and/or emission types (i.e., the quiescent emission and the bursts). In addition, a hard X-ray tail is discovered in a summed spectrum of the small bursts from SGR0501+4516 detected by Suzaku, which is discovered only in the quiescent emission spectra so far. These results could suggest a possible evidence of common emission mechanisms between the quiescent emission and the bursts of magnetar candidates. The quiescent emission could consist of numerous micro-bursts. If this is the case, total released energy of small fluence (< 10(exp -8) erg cm(exp -2) in 2-100 keV) bursts of a cumulative number-intensity distribution can be comparable to a released energy of the quiescent emission. It has arised that the total released energy can easily maintain the quiescent emission energy.
DescriptionMeeting Information: The 3rd Suzaku international Conference "Energetic Cosmos : from Suzaku to ASTRO-H" (June 29-July 2, 2009. Grand Park Otaru Hotel), Otaru, Hokkaido Japan
Meeting sponsors: The University of Tokyo, The Institute of Physical and Chemical Research, The Japan Society for the Promotion of Science
Keywordsstars: neutron
Document TypeConference Paper
JAXA Category特別資料
Report NoJAXA-SP-09-008E

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