The anisotropic illumination model for the Opt.-UV to X-ray emission of Seyfert I galaxies

We develop a self-consistent model of Seyfert galaxies continuum emission f rom Opt.-UV to X ray. A high energy source, at rest at a given height above an accretion disk, is assumed to contain a non-thermal plasma scattering b y Inverse Compton (IC) process the soft photons emitted as thermal radiatio n by the disk. The disk itself radiates only by reprocessing of the high en ergy radiation. This hot source is supposed to be the terminal shock of an aborted jet coming from the disk. Such a geometry is highly anisotropic whi ch has a strong influence on IC process. We present here the main results o f this model. We also include a reflected component computed by Monte-Carlo simulations. Due to the anisotropy of the illumination, this component app ears to be much more important than in standard isotropic illumination mode ls, which leads to different conclusions for the inclination angles. We thu s present our first comparisons to observations by fitting NGC4151, IC4329a , MCG+8-11-11 and NGC 5548. We finally show our preliminary results of the detailed study of the shock giving birth to the hot source, taking into acc ount First and Second order Fermi processes and radiative losses. Such mode l can provide the spectral index and thp high energy cut-off observed in Se yfert galaxies.