NAOC Open IR
A Study of the Light Curve of the X-ray Binary Cyg X-1 as a Black Hole Candidate
Dong Aijun; Wang Jiancheng; Xue Li
2007
Source PublicationChinese Astronomy and Astrophysics
ISSN0275-1062
Volume31Issue:1Pages:21
AbstractUsing the public material of the Rosse X-ray Timing Explorer (RXTE) satellite from January 1996 to May 2005, the periodicity of the light curve of the X-ray binary Cyg X-1 as a black hole candidate is studied and some interesting periods ( T = 1.0 ± 0.2 d and T = 18.0 ± 3.0 d) are found. In the hard state, both the periods T = 1.0 ± 0.2 d and T = 18.0 ± 3.0 d simultaneously appear in the light curve, while in the soft state only the period T = 1.0 ± 0.2 d exists. For analyzing the same material, a new method (i.e., the “derivative” method) is introduced and, in order to check the validity of this method, two traditional methods (the fast Fourier transform and period folding method) are also applied. Identical results are obtained. Besides, the orbital period of Cyg X-1 is also probed. It is discovered that the orbital period T = 5.6 d appears not only in the hard state, but also in the soft state, while it is more obvious in the former.
Language英语
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/42095
Collection中国科学院国家天文台
Affiliation中国科学院国家天文台
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Dong Aijun,Wang Jiancheng,Xue Li. A Study of the Light Curve of the X-ray Binary Cyg X-1 as a Black Hole Candidate[J]. Chinese Astronomy and Astrophysics,2007,31(1):21.
APA Dong Aijun,Wang Jiancheng,&Xue Li.(2007).A Study of the Light Curve of the X-ray Binary Cyg X-1 as a Black Hole Candidate.Chinese Astronomy and Astrophysics,31(1),21.
MLA Dong Aijun,et al."A Study of the Light Curve of the X-ray Binary Cyg X-1 as a Black Hole Candidate".Chinese Astronomy and Astrophysics 31.1(2007):21.
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