arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1007.4937astro-ph.HEastro-ph.CO
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负自旋黑洞的宽发射线

Broad emission lines for negatively spinning black holes

T. Dauser, J. Wilms, C. S. Reynolds, L. W. Brenneman

摘要:

本文提出了一个计算旋转黑洞周围吸积盘发射谱线轮廓的扩展方案。该方案包括具有相对于黑洞的角动量平行和反平行的角动量的盘,因为两种配置都被假设为稳定的(King等人,2005年)。我们讨论了线的形状,这样的光盘,并提出了一个代码的模拟观测数据与此计划的X射线数据分析程序。基于格林函数的方法,可以很容易地考虑到一个任意的半径依赖的光盘发射率和任意的临边暗化法律,而预先计算的数据量显着减少相对于其他可用的模型。

英文摘要:

We present an extended scheme for the calculation of the profiles of emission lines from accretion discs around rotating black holes. The scheme includes discs with angular momenta which are parallel and antiparallel with respect to the black hole's angular momentum, as both configurations are assumed to be stable (King et al., 2005). We discuss line shapes for such discs and present a code for modelling observational data with this scheme in X-ray data analysis programs. Based on a Green's function approach, an arbitrary radius dependence of the disc emissivity and arbitrary limb darkening laws can be easily taken into account, while the amount of precomputed data is significantly reduced with respect to other available models.

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