论文标题
扭曲的黑洞积聚磁盘的铁线轮廓
The Iron Line Profile from Warped Black Hole Accretion Disks
论文作者
论文摘要
黑洞积聚磁盘的荧光铁线的轮廓是对黑洞特性（例如自旋和倾斜度）的强大诊断。然而，最先进的方法考虑了一个积聚盘，其角动量与黑洞的动量保持一致。这是一个非常约束的假设，不太可能适用于许多甚至大多数天体物理系统。在这里，我们使用基于Xillver代码的反射发射模型对扭曲积聚磁盘的反射光谱进行了第一次模拟。我们介绍了翘曲和倾斜角对线轮廓的径向位置的影响，并强调结果高度依赖于观察者相对于倾斜角的方位角位置。我们使用标准的Relxill lamppost模型将这些曲线拟合在XSPEC中，以量化忽略磁盘扭曲对推断的黑洞旋转和倾斜的效果。我们表明，与两个组件relxill的拟合可用于得出更准确的自旋和倾斜度估计值。
The profile of the fluorescent iron line from black hole accretion disks is a powerful diagnostic of black hole properties, such as spin and inclination. The state-of-the-art, however, considers an accretion disk whose angular momentum is aligned with that of the black hole; this is a very constraining assumption which is unlikely to apply to many or even most astrophysical systems. Here, we present the first simulation of the reflection spectrum from warped accretion disks using a realistic model of the reflected emission based on the xillver code. We present the effects that the radial location of the warp and the tilt angle have on the line profile, and highlight that the results are highly dependent on the azimuth position of the observer relative to the tilt angle. We fit these profiles in XSpec with the standard relxill lamppost model to quantify the effect that neglecting the disk warps has on the inferred black hole spins and inclinations. We show that fits with two-component relxill can be used to derive more accurate spin and inclination estimates.
