THE SPIN OF THE BLACK HOLE IN THE X-RAY BINARY NOVA MUSCAE 1991

	THE SPIN OF THE BLACK HOLE IN THE X-RAY BINARY NOVA MUSCAE 1991
	Chen, Zihan1,2 ; Gou, Lijun1,2 ; McClintock, Jeffrey E.3; Steiner, James F.3; Wu, Jianfeng 3; Xu, Weiwei1,2 ; Orosz, Jerome A.4; Xiang, Yanmei 1,5
刊名	ASTROPHYSICAL JOURNAL
	2016-07-01
卷号	825 期号:1
关键词	X-rays: binaries
英文摘要	The bright soft X-ray transient Nova Muscae 1991 was intensively observed during its entire eight-month outburst using the Large Area Counter on board the Ginga satellite. Recently, we obtained accurate estimates of the mass of the black hole primary, the orbital inclination angle of the system, and the distance. Using these crucial input data and Ginga X-ray spectra, we have measured the spin of the black hole using the continuum-fitting method. For four X-ray spectra of extraordinary quality we have determined the dimensionless spin parameter of the black hole to be a(*) = 0.63(-0.19)(+0.16) (1 sigma confidence level), a result that we confirm using 11 additional spectra of lower quality. Our spin estimate challenges two published results: it is somewhat higher than the value predicted by a proposed relationship between jet power and spin; and we find that the spin of the black hole is decidedly prograde, not retrograde as has been claimed.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	CONTINUUM-FITTING METHOD ; ACCRETION DISK MODELS ; CYGNUS X-1 ; SPECTRAL EVOLUTION ; PLUNGING REGION ; INNER-DISK ; JET POWER ; LMC X-3 ; MASS ; EXTREME
收录类别	SCI
语种	英语
WOS记录号	WOS:000381930000045
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/6883]
专题	国家天文台_星系宇宙学研究部
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100012, Peoples R China 3.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA 4.San Diego State Univ, Dept Astron, 5500 Campanile Dr, San Diego, CA 92182 USA 5.Yunnan Univ, Key Lab Astroparticle Phys Yunnan Prov, Dept Astron, Kunming 650091, Peoples R China
推荐引用方式 GB/T 7714	Chen, Zihan,Gou, Lijun,McClintock, Jeffrey E.,et al. THE SPIN OF THE BLACK HOLE IN THE X-RAY BINARY NOVA MUSCAE 1991[J]. ASTROPHYSICAL JOURNAL,2016,825(1).
APA	Chen, Zihan.,Gou, Lijun.,McClintock, Jeffrey E..,Steiner, James F..,Wu, Jianfeng.,...&Xiang, Yanmei.(2016).THE SPIN OF THE BLACK HOLE IN THE X-RAY BINARY NOVA MUSCAE 1991.ASTROPHYSICAL JOURNAL,825(1).
MLA	Chen, Zihan,et al."THE SPIN OF THE BLACK HOLE IN THE X-RAY BINARY NOVA MUSCAE 1991".ASTROPHYSICAL JOURNAL 825.1(2016).