Modeling of polarization properties of the emergent X-ray radiation of the accretion disks around Stellar Mass Black Holes

Results of computations of emergent polarized radiation of accretion disks around stellar mass Kerr black holes are presented. Local (at given radius) structures of the discs were computed applying the method used to stellar atmosphere modeling. The method was modified for taking into account changing the gravity and the energy generation rate over the vertical coordinate. Possible magnetic field in accretion disks was ignored and only source of polarization is electron scattering. Presence of true plasma opacity leads to deviation from pure electron scattering atmosphere case. A polarization degree increases if the contribution of the true opacity is comparable with the electron scattering opacity, or decreases if the true opacity dominates. As a result the polarization degree of the emergent radiation depends both, on the photon energy and on the local accretion disk parameters.