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arXiv 0707.4492astro-ph
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恒星质量黑洞自旋的估算

Estimating the Spins of Stellar-Mass Black Holes

Jeffrey E. McClintock, Ramesh Narayan, Rebecca Shafee

摘要:

我们描述了一个程序,我们已经开始估计旋转的恒星质量黑洞的X射线双星。我们用标准薄盘模型拟合了吸积盘辐射的连续X射线谱,并提取了黑洞的无量纲自旋参数a* = a/M作为拟合参数。我们已经获得了三个系统的结果,4U 1543-47(a* = 0.7-0.85),GRO J1655-40(0.65-0.8),和GRS 1915+105(0.98-1),并已接近完成的两个额外的系统的分析。我们预计在未来几年内将旋转估计的样本扩大到大约十几个。

英文摘要:

We describe a program that we have embarked on to estimate the spins of stellar-mass black holes in X-ray binaries. We fit the continuum X-ray spectrum of the radiation from the accretion disk using the standard thin disk model, and extract the dimensionless spin parameter a* = a/M of the black hole as a parameter of the fit. We have obtained results on three systems, 4U 1543-47 (a* = 0.7-0.85), GRO J1655-40 (0.65-0.8), and GRS 1915+105 (0.98-1), and have nearly completed analysis of two additional systems. We anticipate expanding the sample of spin estimates to about a dozen over the next several years.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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