Energy Dependent Time lags of Photons: Simulation meets Observation
Abstract
Time lags of photons originated from the accretion disk provides valuable information on the geometry of the disk. Major components that contributes to the lag variations are Comptonization, disk reflection and photon bending and are articulated in the literature. Using Monte-Carlo technique, we incorporate the aforesaid physical mechanisms considering Two Component Advective Flow (TCAF) geometry. Spectral distribution of photons emitted from TCAF are obtained. Variation of time lag with the size of Compton cloud or CENBOL, accretion rate, energy and inclination angle are reported. Finally, we compare our simulated results from TCAF with the observational results reported in the literature. We show that the the main reason for increasing time lag is the increase in size of the Compton cloud, or CENBOL.
- Publication:
-
42nd COSPAR Scientific Assembly
- Pub Date:
- July 2018
- Bibcode:
- 2018cosp...42E.590C