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Estimating the Black Hole Spin for the X-Ray Binary MAXI J1820+070
Zhao, Xueshan; Gou, Lijun; Dong, Yanting; Tuo, Youli; Liao, Zhenxuan; Li, Yufeng; Jia, Nan; Feng, Ye; Steiner, James F.
2021
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume916Pages:108
AbstractMAXI J1820+070 is a newly discovered black hole X-ray binary, whose dynamical parameters, namely the black hole mass, the inclination angle, and the source distance, have recently been estimated. Insight-HXMT have observed its entire outburst from 2018 March 14. In this work, we attempted to estimate the spin parameter a*, using the continuum-fitting method and applying a fully relativistic thin disk model to the soft-state spectra obtained by Insight-HXMT. It is well known that a* is strongly dependent on three dynamical parameters in this method, and we have examined two sets of parameters. Adopting our preferred parameters: M = , i = 63° ± 3°, and D = 2.96 ± 0.33 kpc, we found a slowly spinning black hole of a* = 0.14 ± 0.09 (1ҩ, which gives a prograde spin parameter as the majority of other systems show. It is also possible for the black hole to have a retrograde spin (less than 0) if different dynamical parameters are taken.
DOI10.3847/1538-4357/ac07a9
WOS IDWOS:000681055900001
ADS Bibcode2021ApJ...916..108Z
ADS URLhttps://ui.adsabs.harvard.edu/abs/2021ApJ...916..108Z
Citation statistics
Cited Times:11 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/289806
Collection粒子天体物理中心
硬X射线调制望远镜卫星
Recommended Citation
GB/T 7714
Zhao, Xueshan,Gou, Lijun,Dong, Yanting,et al. Estimating the Black Hole Spin for the X-Ray Binary MAXI J1820+070[J]. The Astrophysical Journal,2021,916:108.
APA Zhao, Xueshan.,Gou, Lijun.,Dong, Yanting.,Tuo, Youli.,Liao, Zhenxuan.,...&Steiner, James F..(2021).Estimating the Black Hole Spin for the X-Ray Binary MAXI J1820+070.The Astrophysical Journal,916,108.
MLA Zhao, Xueshan,et al."Estimating the Black Hole Spin for the X-Ray Binary MAXI J1820+070".The Astrophysical Journal 916(2021):108.
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