Estimating the Spins of Stellar-Mass Black Holes by Fitting Their Continuum Spectra

摘要：

We have used the Novikov-Thome thin disk model to fit the continuum X-ray spectra of three transient black hole X-ray binaries in the thermal state. From the fits we estimate the dimensionless spin parameters of the black holes to be: 4U 1543-47, a<,*>a/M = 0.7- 0.85; GRO J1655-40, a<,*>=0.65-0.8; GRS 1915+105, a<, *>=0.98-1. We plan to expand the sample of spin estimates to about a dozen over the next several years. Some unresolved theoretical issues are briefly discussed.

关键词： accretion disk black hole spin X-ray binary

作者: Ramesh Narayan Jeffrey E. McClintock Rebecca Shafee

作者单位: Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138, USA

会议类型: 国际会议

会议名称: 紧凑型物体的天体物理学国际会议(International Conference on Astrophysics of Compact Objects)

会议地点: 安徽黄山

会议语种:英文

页码: 265-272

在线出版日期: 2007-07-01（万方平台首次上网日期，不代表论文的发表时间）