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The fine spectral structure of Cygnus X-1
Li C(李晨); Li TB(李惕碚); Song LM(宋黎明); Feng YX(冯育新); Chen, L; Li, TP; Song, LM; Feng, YX
刊名CHINESE ASTRONOMY AND ASTROPHYSICS
2000
卷号24期号:3页码:#REF!
关键词Cyg X-1 X-ray LSSM power spectral density
学科分类Astronomy & Astrophysics
DOI10.1016/S0275-1062(00)00057-6
通讯作者Chen, L (reprint author), Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China.
文章类型Article
英文摘要The power spectral density (PSD) of Cyg X-l is divided into two parts by using the linear state space model (LSSM). One part is the PSD of LSSM, the other is the residual power spectral density (RPSD) defined by the whole PSD minus the model PSD. We focus our attention on analyzing the RPSD. The results show that RPSD has different characteristics in 3 different states-the low/hard, transition and high/soft states. There is a broad peak structure both in the high/soft and low/hard states, with average central frequencies similar to 8Hz and similar to 5 HZ respectively The RPSD in the low/hard state may peak at similar to 0.07 HE. While during the Transition State, the RPSD has a double-peak structure, with the central frequencies in the regions of 0.5-4Hz and 5-11Hz respectively and these are quite close to the QPO central frequencies we have previously obtained. This fact implies that the QPO and the auto-regression that is needed in LSSM belong to different physical processes. Comparing to PSD, the RPSD is more sensitive to variations, such as the QPO, the broken frequencies and so on, The reason for the variable peak in the RPSD is discussed.
类目[WOS]Astronomy & Astrophysics
收录类别SCI
WOS记录号WOS:000088821200006
引用统计
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/311005/227489
专题院士_期刊论文
推荐引用方式
GB/T 7714
Li C,Li TB,Song LM,et al. The fine spectral structure of Cygnus X-1[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,2000,24(3):#REF!.
APA 李晨.,李惕碚.,宋黎明.,冯育新.,Chen, L.,...&Feng, YX.(2000).The fine spectral structure of Cygnus X-1.CHINESE ASTRONOMY AND ASTROPHYSICS,24(3),#REF!.
MLA 李晨,et al."The fine spectral structure of Cygnus X-1".CHINESE ASTRONOMY AND ASTROPHYSICS 24.3(2000):#REF!.
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