Hard X-ray lags of Cygnus X-1 on short timescales

doi:10.1007/s11433-010-0002-8

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	Hard X-ray lags of Cygnus X-1 on short timescales
	Jin, J; Lu Y(卢宇); Qu JL(屈进禄); Li TB(李惕碚); Lu, Y; Qu, JL; Li, TP
	2010
发表期刊	SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
卷号	53 期号:1 页码:#REF!
通讯作者	Jin, J (reprint author), Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China.
文章类型	Article
摘要	Calculating the time lags over different timescales using the cross-correlation technique may lead to a biased estimate of small timescales. Given a timescale for lightcurve binning, we propose to subtract the local average instead of the global average during the cross-correlation, in order to filter variations on timescales larger than the bin size. The new method allows us to make an unbiased estimate of the time lags using RXTE/PCA data on timescales as small as similar to 5 ms, where the Fourier technique becomes invalid. We calculate the time lag spectra of Cygnus X-1 at different spectral states with the new method, and find that the source appears to have similar X-ray lags on small timescales independent of its spectral states.
关键词	spectral lags Cygnus X-1 data analysis
学科领域	Physics
DOI	10.1007/s11433-010-0002-8
收录类别	SCI
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000280291800035
引用统计
文献类型	期刊论文
条目标识符	http://ir.ihep.ac.cn/handle/311005/226512
专题	院士粒子天体物理中心
推荐引用方式 GB/T 7714	Jin, J,Lu Y,Qu JL,et al. Hard X-ray lags of Cygnus X-1 on short timescales[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2010,53(1):#REF!.
APA	Jin, J.,卢宇.,屈进禄.,李惕碚.,Lu, Y.,...&Li, TP.(2010).Hard X-ray lags of Cygnus X-1 on short timescales.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,53(1),#REF!.
MLA	Jin, J,et al."Hard X-ray lags of Cygnus X-1 on short timescales".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 53.1(2010):#REF!.

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