吸积盘反射辐射的强度和偏振
Intensity and polarization of radiation reflected from accretion disc
摘要：
我们考虑了吸积盘上的点状源的非偏振辐射的反射，吸积盘是光学厚的和光学薄的。我们研究了反射辐射的偏振对入射辐射孔径角的依赖关系。孔径角由吸积盘的半径和源在吸积盘上方的高度决定。对于光学厚吸积盘，我们表明，如果孔径角小于70梯度，那么波电场振荡的反射辐射是平行于吸积盘平面。当孔径角大于70度时，电场振荡平行于“垂直于吸积盘-视线”的平面。后者也适用于反射从光学薄吸积盘独立的孔径角值。
英文摘要：
We consider the reflection of non-polarized radiation from the point-like sources above the accretion discs both the optically thick and optically thin. We investigate the dependence of the polarization of reflected radiation on the aperture angle of incident radiation. The aperture angle is determined by the radius of accretion disc and the height of the source above the disc. For optically thick accretion discs we show that, if the aperture angle is smaller 70 grad, then the wave electric field oscillations of reflected radiation are parallel to the accretion disc plane. For aperture angle greater than 70 grad the electric field oscillations are parallel to the plane "normal to accretion disc - the line of sight". The latter also holds for reflection from the optically thin accretion disc independent of the aperture angle value.
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