TIMESCALE-RESOLVED SPECTROSCOPY OF Cyg X-1

	TIMESCALE-RESOLVED SPECTROSCOPY OF Cyg X-1
	Wu, YX; Li TB(李惕碚); Liu H(刘浩); Li, TP; Belloni, TM; Wang, TS; Liu, H
刊名	ASTROPHYSICAL JOURNAL
	2009
卷号	695 期号:2 页码:921-929
关键词	binaries: general methods: data analysis stars: individual (Cyg X-1) X-rays: general
通讯作者	[Wu, Y. X. ; Li, T. P.] Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China ; [Wu, Y. X. ; Li, T. P. ; Wang, T. S.] Tsinghua Univ, Ctr Astrophys, Beijing 100084, Peoples R China ; [Li, T. P. ; Wang, T. S.] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China ; [Li, T. P. ; Liu, H.] Chinese Acad Sci, Inst High Energy Phys, Particle Astrophys Lab, Beijing, Peoples R China ; [Belloni, T. M.] INAF Osservatorio Astrono Brera, I-23807 Merate, Italy
英文摘要	We propose the timescale-resolved spectroscopy (TRS) as a new method to combine the timing and spectral study. The TRS is based on the time domain power spectrum and reflects the variable amplitudes of spectral components on different timescales. We produce the TRS with the RXTE PCA data for Cyg X-1 and study the spectral parameters (the power-law photon index and the equivalent width of the iron fluorescent line) as a function of timescale. The results of TRS and frequency-resolved spectra have been compared, and similarities have been found for the two methods with the identical motivations. We also discover the correspondences between the evolution of photon index with timescale and the evolution of the equivalent width with timescale. The observations can be divided into three types according to the correspondences and different type is connected with different spectral state.
学科主题	Astronomy & Astrophysics
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
原文出处	SCI
语种	英语
WOS记录号	WOS:000265018300014
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/238742]
专题	高能物理研究所_院士高能物理研究所_粒子天体物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Wu, YX,Li TB,Liu H,et al. TIMESCALE-RESOLVED SPECTROSCOPY OF Cyg X-1[J]. ASTROPHYSICAL JOURNAL,2009,695(2):921-929.
APA	Wu, YX.,李惕碚.,刘浩.,Li, TP.,Belloni, TM.,...&Liu, H.(2009).TIMESCALE-RESOLVED SPECTROSCOPY OF Cyg X-1.ASTROPHYSICAL JOURNAL,695(2),921-929.
MLA	Wu, YX,et al."TIMESCALE-RESOLVED SPECTROSCOPY OF Cyg X-1".ASTROPHYSICAL JOURNAL 695.2(2009):921-929.