Radiation intensity and polarization from accretion disks with progressive increasing height

Abstract

This article considers the optically thick accretion disks with the progressive increasing height. The surface is assumed to be the conical form. The radiation with considered wavelength emerges from a ring on the cone and is described by the Milne problem for the intensity and polarization. The inclination angles of the rings are taken 15 and 30 grad. The inclination angles between the line of sight and the normal to the central accretion disk plane are taken 30, 45, and 60 grad for every value of the ring inclination. For the continuum radiation, the polarization of the emerging light is less than that in the case of the plane accretion disk. The polarization position angles of radiation emerging from the right and left parts of the ring are opposite to one another. They are determined by the geometry of the problem. The position angle of the observed continuum radiation is parallel to the central plane of the accretion disk. Our theory gives the new explanation of that the position angles in “red” and “blue” wings of a spectral line are opposite to one another. This behavior exists in many Seyfert galaxies.

Intensity and Polarization of Radiation Emerging from Rotating Accretion Disc with Increasing Height

“…The detailed tables of J(µ) and p(µ) in % (with ∆µ = 0.005) are given in Silant'ev et al [8]. They describe the Milne problem in optically thick electron atmosphere (see Chandrasekhar [3]).…”