arXiv 2001.062012020-01-17astro-ph.SR

球对称运动介质中共振线偏振的参数研究

Resonance Line Polarization in Spherically Symmetric Moving Media: a Parametric Study

A. Megha, M. Sampoorna, K. N. Nagendra, L. S. Anusha, K. Sankarasubramanian

备注：: 10 pages, 6 figures, Proceedings of the 9th Solar Polarization Workshop SPW9, A workshop held in Gottingen, Germany, from August 26 to August 30, 2019
发表信息：: Proceedings of the 9th Solar Polarization Workshop SPW9, Published open access by MPS 2020
DOI：: 10.17617/2.3186650

摘要：

本文研究了球对称膨胀大气中形成的共振线偏振问题。对于有关的偏振传输方程的解决方案，我们使用的同动框架制定，并应用加速λ迭代（ALI）方法。我们限制自己的非相对论性制度的速度，其中主要是多普勒频移效应是显着的。在我们的研究中，我们考虑了二能级原子上的散射，包括部分频率重分布（PFR）的影响。我们提出了不同的大气和原子参数的线性偏振配置文件的依赖关系。

英文摘要：

In the present paper we consider the problem of resonance line polarization formed in the spherically symmetric expanding atmospheres. For the solution of the concerned polarized transfer equation we use the comoving frame formulation, and apply the Accelerated Lambda Iteration (ALI) method. We restrict ourselves to the non-relativistic regime of velocities wherein mainly Doppler shift effects are significant. For our studies, we consider the scattering on a two-level atom, including the effects of partial frequency redistribution (PFR). We present the dependence of linearly polarized profiles on different atmospheric and atomic parameters.

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