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arXiv 0910.2885astro-ph.SR
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太阳光球临边附近的分光偏振诊断

Spectropolarimetric Diagnostics at the Solar Photosphere near the Limb

L. Yelles Chaouche, S. K. Solanki, L. Rouppe van der Voort, M. van Noort

摘要:

在目前的工作中,我们调查的形成斯托克斯配置文件和光谱偏振诊断的活动区plage附近的肢体。我们使用3-D辐射MHD模拟与单极场的平均强度为400 G,这主要集中在通量管中的字段达到典型的千高斯值。我们通过辐射转移计算生成合成的斯托克斯光谱,然后我们降低模拟的斯托克斯信号来解释观测条件。以这种方式处理的合成数据进行了比较,发现大致再现分光偏振高分辨率观测Mu=0.39获得的SOUP仪器与瑞典1米太阳望远镜在2006年初。

英文摘要:

In the present work, we investigate the formation of Stokes profiles and spectro-polarimetric diagnostics in an active region plage near the limb. We use 3-D radiation-MHD simulations with unipolar fields of an average strength of 400 G, which is largely concentrated in flux tubes in which the field reaches typical kilo-Gauss values. We generate synthetic Stokes spectra by radiative transfer calculations, then we degrade the simulated Stokes signal to account for observational conditions. The synthetic data treated in this manner are compared with and found to roughly reproduce spectro-polarimetric high-resolution observations at Mu=0.39 obtained by the SOUP instrument with the Swedish 1-m Solar Telescope at the beginning of 2006.

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