We consider the radiation emission in continuum and spectral lines from rotating accretion disc with the progressive increasing height. It is known that for the plane accretion disc with homogeneous atmosphere the wave electric field $\mathbf{E}$ is perpendicular to the plane between line of sight $\mathbf{n}$ and the normal to the disc $\mathbf{N}$. For the expanding accretion disc the wave electric field from every inclined cone-like part with given azimuthal angle $\phi$ has direction perpendicular to the plane between $\mathbf{n}$ and local normal ${\mathbf{N}}^{\prime }$ to the inclined surface. This behaviour is the consequence of homogeneity of inclined atmosphere and has purely geometrical origin. The geometrical consideration shows that the position angles of polarized radiation in the right and left parts relative to plane (nN) of the inclined accretion disc have opposite values. Therefore, for inclined accretion disc the integral continuum radiation has the usual polarization angle perpendicular to the plane $\left(\mathbf{nN}\right)$, but smaller degree of polarization and less alongated along the normal $\mathbf{N}$ than that for the plane accretion disc. For spectral line, due to the Doppler effect, the polarization (position) angles have opposite signs for the red and blue wings. Such behaviour is frequently observed in H$\alpha$-radiation.

中文翻译：

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高度增加的旋转吸积盘产生的辐射强度和偏振

我们考虑旋转吸积盘在连续谱线和谱线中的辐射发射，其高度逐渐增大。众所周知，对于具有均匀大气的平面吸积盘，波电场$\mathbf{Ë}$ 垂直于视线之间的平面 $\mathbf{ñ}$ 和光盘的法线 $\mathbf{ñ}$。对于膨胀的吸积盘，来自每个倾斜锥形部分的，具有给定方位角的波电场$\phi$ 方向垂直于 $\mathbf{ñ}$ 和当地正常 ${\mathbf{ñ}}^{\prime }$到倾斜的表面。此行为是倾斜大气的均质性的结果，并且纯粹是几何原点。几何上的考虑表明，相对于倾斜吸积盘的平面（nN），左右部分中偏振辐射的位置角具有相反的值。因此，对于倾斜的吸积盘，整体连续辐射具有垂直于平面的通常偏振角$（\mathbf{nN}）$，但极化程度较小，沿着法线的极化较少 $\mathbf{ñ}$比平面吸盘高。对于谱线，由于多普勒效应，红色和蓝色机翼的偏振（位置）角具有相反的符号。在H中经常观察到这种行为$\alpha$-辐射。