论文标题
银河黑洞候选GRS的宽带X射线光谱和自旋估计1758-258
Broadband X-ray Spectroscopy and Estimation of Spin of the Galactic Black Hole Candidate GRS 1758-258
论文作者
论文摘要
我们介绍了持续的银河黑洞X射线二进制二进制GRS 1758-258的宽带（0.5-78 keV）X射线光谱研究的结果。与吸收的幂律模型拟合显示频谱中的Fe线和反射驼峰。我们使用相对论反射模型的不同口味进行光谱分析。所有模型均表示GRS 1758-258中黑洞的自旋> 0.92。在观察过程中，来源处于低硬状态，电晕的热电子温度估计为kt $ _e $ 〜140 keV。假设在观察期间，黑洞的降低为约1.5％，假设黑洞质量为10 $ m _ {\ odot} $，距离为8 kpc。
We present the results of a broadband (0.5-78 keV) X-ray spectral study of the persistent Galactic black hole X-ray binary GRS 1758-258 observed simultaneously by Swift and NuSTAR. Fitting with an absorbed power-law model revealed a broad Fe line and reflection hump in the spectrum. We used different flavours of the relativistic reflection model for the spectral analysis. All models indicate the spin of the black hole in GRS 1758-258 is >0.92. The source was in the low hard state during the observation, with the hot electron temperature of the corona estimated to be kT$_e$ ~ 140 keV. The black hole is found to be accreting at ~1.5 % of the Eddington limit during the observation, assuming the black hole mass of 10 $M_{\odot}$ and distance of 8 kpc.
