论文标题
建模X射线反射光谱测量中的不确定性II：辐射区域的影响
Modeling uncertainties in X-ray reflection spectroscopy measurements II: Impact of the radiation from the plunging region
论文作者
论文摘要
X射线反射光谱是探测黑洞周围强重力区域的强大工具，但是可用的相对论反射模型具有多种简化，可导致在测量源的性质中进行系统的不确定性（未完全控制）。在纸I中，我们考虑了光学较薄的跌落区域的情况，我们研究了磁盘另一侧产生的辐射的影响或将黑洞或多次圆圈圈出。在本文中，我们讨论了光学较厚的跌落区域的案例，并研究了暴跌气体的反射光谱的影响。我们表明，这种辐射的贡献对于黑洞旋转参数的低值和视角的较大值更为重要，并且随着旋转参数的增加而显着降低，并且倾斜角降低。尽管某些参数的估计值可能会受到衰落气体的反射光谱的影响，如果这些估计不包括在理论模型中，但我们发现这种辐射并不能明显限制我们测试Kerr黑洞假设的能力。
X-ray reflection spectroscopy is a powerful tool to probe the strong gravity region around black holes, but the available relativistic reflection models have a number of simplifications that lead to systematic uncertainties (not fully under control) in the measurement of the properties of a source. In Paper I, we considered the case of an optically thin plunging region and we studied the impact of the radiation produced by the other side of the disk or circling the black hole one or more times. In the present paper, we discuss the case of an optically thick plunging region and we study the impact of the reflection spectrum of the plunging gas. We show that the contribution of such radiation is more important for low values of the black hole spin parameter and large values of the viewing angle, and it decreases significantly as the spin parameter increases and the inclination angle decreases. While the estimate of some parameters may be affected by the reflection spectrum of the plunging gas if this is not included in the theoretical model, we find that such radiation does not appreciably limit our capability of testing the Kerr black hole hypothesis.
