Radiative Transfer in Solar Prominences
Radiative Transfer in Solar Prominences
复制标题
日珥的辐射传输
DOI：
10.1007/978-3-319-10416-4_5
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
P. Heinzel
中科院分区：
文献类型：
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作者：
P. Heinzel
关于日珥物理条件的关键信息只能通过分析日珥光谱或高分辨率单色图像来获得。太阳辐射是低密度结构，因此，非平衡（NLTE）光谱工具必须使用。我们描述的NLTE辐射传输理论的基础知识，适用于典型的突出条件，并证明为什么NLTE的方法是必要的。从最简单的一维平板模型开始，我们逐渐转向更复杂的问题，其中包括二维传输，部分重新分配的重要性，在形成谐振线和细节的多级问题，包括最先进的最新的数值方法构建NLTE模型。我们还提到了日珥模型的一些最新成就（例如磁倾角、辐射平衡模型、振荡），尽管这些结果的详细描述是其他章节的主题。
Critical information about prominence physical conditions can be obtained only by analyzing prominence spectra or high-resolution monochromatic images. Solar prominences are low-density structures and, therefore, the non-equilibrium (NLTE) spectroscopy tools have to be used. We describe the basics of the NLTE radiative-transfer theory applied to typical prominence conditions and demonstrate why the NLTE approach is necessary. Starting from the simplest 1D slab models, we gradually move to more complex problems which include 2D transfer, importance of partial redistribution in the formation of resonance lines and details of multilevel problems including the most up-to-date numerical methods for constructing NLTE models. We also mention some recent achievements in prominence modeling (e.g. magnetic dips, radiative equilibrium models, oscillations), although detailed description of such results is the subject of other chapters.