Reverberation mapping in the lamp-post geometry of the compact corona illuminating a black-hole accretion disc in AGN
Abstract
The X-ray reverberation mapping of the inner parts of the accretion disc might be used to distinguish between different geometries of the corona, compact or extended, or to measure the properties of the central super-massive black hole, especially its spin. In this contribution I will summarize the basic properties of the reverberation mapping in the lamp-post geometry of the compact corona where the ionisation of the disc due to its illumination is taken into account. The theoretical lag vs. frequency and energy dependences will be shown for different model parameters such as the height of the corona and mass and spin of the black hole. The influence of these parameters on the measured time lags will be discussed and simulations for the future X-ray observatory Athena shown.
- Publication:
-
The X-ray Universe 2014
- Pub Date:
- July 2014
- Bibcode:
- 2014xru..confE.244D