X-ray Properties of Magnetic Flares Orbiting Above the Accretion Disk in Active Galactic Nuclei

ISBN: 92-9092-915-4International audienceWe present radiative transfermodeling of the X-ray emission frommagnetic compact flares in Active Galactic Nuclei (AGN). In this model the hard X-ray primary radiation coming directly from the flare source illuminates the accretion disk, which is supposed to stay in hydrostatic equilibrium. A Compton reflection/reprocessed component coming from the disk surface is computed for several flare locations and for different emission directions. This modeling takes into account the variations of the incident radiation across the hot-spot underneath the flare source. Time-dependent spectra and light curves for orbiting flares at various distances from the black hole are computed using a full general relativity ray-tracing technique. The computations are carried out for black holes of different masses and accretion rates. Rms-variability spectra for large flare distributions across the disk are also computed and compared to observed X-ray data of the Seyfert-1 galaxy MCG-6-30-15