复旦大学Cosimo Bambi教授报告

报告人：复旦大学 Cosimo Bambi 教授

报告题目：Transfer function of thin accretion disks

时间：2016年3月25日星期五下午2点30分

地点：物理馆323室

报告摘要：
The X-ray reflection component of a thin accretion disk around a black hole can be conveniently calculated with the approach of the transfer function.  The advantage of this method is that the problem is split in two blocks:  one is the calculation of the transfer function, which takes into account all the relativistic effects (Doppler boosting, gravitational redshift, light bending) and only depends on the background metric, and the other part is the calculation of the spectrum at the emission point, which is only determined by the microphysics and requires to solve radiative transfer equations.  In this talk, I will discuss the calculations of the transfer function.  In the Kerr metric, one has to solve some elliptic integrals.  In the more general case, one has to solve the geodesic equations and then use some interpolation techniques.