論文

査読有り
2015年6月

Suzaku observation of X-ray variability in soft state LMCX-1

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
  • Shu Koyama
  • ,
  • Shin'ya Yamada
  • ,
  • Aya Kubota
  • ,
  • Makoto S. Tashiro
  • ,
  • Yukikatsu Terada
  • ,
  • Kazuo Makishima

67
3
開始ページ
46
終了ページ
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1093/pasj/psv017
出版者・発行元
OXFORD UNIV PRESS

This paper reports the results of Suzaku observation of the spectral variation of the black hole binary LMCX-1 in the soft state. The observation was carried out in 2009 from July 21 to 24. the obtained net count rate was similar to 30 counts s(-1) in the 0.5-50 keV band with similar to 10% peak-to-peak flux variation. The time-averaged X-ray spectrum cannot be described by a multi-color disk and single Compton component with its reflection, but requires additional Comptonized emissions. This double Compton component model allows a slightly larger inner radius of the multi-color disk, implying a lower spin parameter. Significant spectral evolution was observed above 8 keV along with a flux decrease on a timescale of similar to 10(4)-10(5) s. By spectral fitting, we show that this behavior is well explained by changes in the hard Comptonized emission component in contrast to the maintained disk and soft Comptonized emission.

リンク情報
DOI
https://doi.org/10.1093/pasj/psv017
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000356182500017&DestApp=WOS_CPL
URL
https://ui.adsabs.harvard.edu/#abs/2015PASJ...67...46K
ID情報
  • DOI : 10.1093/pasj/psv017
  • ISSN : 0004-6264
  • eISSN : 2053-051X
  • Web of Science ID : WOS:000356182500017

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