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X-ray spectral variability in the initial rise of XTE J1550-564
Wu, YX; Liu, CZ; Li TB(李惕碚); Li, TP
刊名ASTROPHYSICAL JOURNAL
2007
卷号660期号:2页码:1386-1392
关键词accretion, accretion disks black hole physics stars : individual (XTE J1550-564) X-rays : stars
学科分类Astronomy & Astrophysics
DOI10.1086/513304
通讯作者Tsing Hua Univ, Dept Engn Phys, Beijing 100084, Peoples R China ; Tsing Hua Univ, Ctr Astrophys, Beijing 100084, Peoples R China ; Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Particle Astrophys Lab, Beijing 100049, Peoples R China
文章类型Article
英文摘要X-ray variability of the microquasar XTE J1550 - 564 is studied with time-domain techniques using data from an RXTE PCA observation on 1998 September 8. The 2-60 keV average shot profile is obtained by superposing shots with 1 ms time binning after aligning their peaks. The spectral behavior during the averaged shot exhibits prominent differences from that previously observed in Cyg X-1. The 13-60 keV/ 2-13 keV and 16-60 keV/ 13-16 keV hardness ratios during a shot are lower and higher, respectively, than those for steady emission. The correlation coefficients between intensity and 13-60 keV/ 2-13 keV and 16-60 keV/ 13-16 keV hardness ratios are also negative and positive, respectively. These results indicate that the physical processes at work in the low state of XTE J1550 - 564 may be different from those in Cyg X-1.
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
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语种英语
WOS记录号WOS:000246571300042
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被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239332
专题院士_期刊论文
作者单位中国科学院高能物理研究所
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Wu, YX,Liu, CZ,Li TB,et al. X-ray spectral variability in the initial rise of XTE J1550-564[J]. ASTROPHYSICAL JOURNAL,2007,660(2):1386-1392.
APA Wu, YX,Liu, CZ,李惕碚,&Li, TP.(2007).X-ray spectral variability in the initial rise of XTE J1550-564.ASTROPHYSICAL JOURNAL,660(2),1386-1392.
MLA Wu, YX,et al."X-ray spectral variability in the initial rise of XTE J1550-564".ASTROPHYSICAL JOURNAL 660.2(2007):1386-1392.
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