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| 題名: | Sub-MeV band observation of a hard burst from AXP1E1547.0-5408 with the Suzaku Wide-band All-sky Monitor |
| 作者: | 浦田裕次;Yasuda, Tetsuya;Iwakiri, Wataru B.;Tashiro, Makoto S.;Terada, Yukikatsu;Kouzu, Tomomi;Enoto, Teruaki;Nakagawa, Yujin E.;Bamba, Aya;Urata, Yuji;Yamaoka, Kazutaka;Ohno, Masanori;Shibata, Shinpei;Makishima, Kazuo |
| 貢獻者: | 理學院天文研究所 |
| 日期: | 2015-01-01 |
| 上傳時間: | 2026-04-21 14:31:10 (UTC+8) |
| 出版者: | Oxford University Press |
| 摘要: | 摘要： The 2.1-s anomalous X-ray pulsar 1E 1547.0−5408 exhibited an X-ray outburst on 2009 January 22, emitting a large number of short bursts. The wide-band all-sky monitor (WAM) on-board Suzaku detected at least 254 bursts in the 160 keV–6.2 MeV band over the period of January 22 00:57–17:02 UT from the direction of 1E 1547.0−5408. One of these bursts, which occurred at 06:45:13, produced the brightest fluence in the 0.5–6.2 MeV range, with an averaged 0.16–6.2 MeV flux and extrapolated 25 keV–2 MeV fluence of about 1 × 10−5 erg cm−2 s−1 and about 3 × 10−4 erg cm−2, respectively. After pile-up corrections, the time-resolved WAM spectra of this burst were well-fitted in the 0.16–6.2 MeV range by two-component models; specifically, a blackbody plus an optically thin thermal bremsstrahlung or a combination of a blackbody and a power-law component with an exponential cut-off. These results are compared with previous works reporting the persistent emission and weaker short bursts followed by the same outburst.
其他題名： Publ. Astron. Soc. Jpn
出版者： Oxford University Press
出版日期： 2015-06-01
出處： Publications of the Astronomical Society of Japan, 2015-06, Vol.67 (3)
資源來源： Alma/SFX Local Collection
版權： The Author 2015. Published by Oxford University Press on behalf of the Astronomical Society of Japan. All rights reserved. For Permissions, please email: journals.permissionsoup.com 2015
識別號： ISSN: 0004-6264
識別號： ISSN: 2053-051X
識別號： EISSN: 0004-6264
識別號： EISSN: 2053-051X
識別號： DOI: 10.1093/pasj/psv011 |
| 顯示於類別: | [天文研究所] 期刊論文
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