Modeling Scattering Polarization for Probing Solar Magnetism
Modeling Scattering Polarization for Probing Solar Magnetism
复制标题
模拟散射偏振以探测太阳磁力
DOI：
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发表时间：
2011
期刊：
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通讯作者：
J. T. Bueno
中科院分区：
文献类型：
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作者：
J. T. Bueno
本文考虑了由原子组成的天体物理等离子体产生的光偏振的建模问题，这些原子的激发态受入射辐射场的各向异性的显著影响。特别是，它强调了安静太阳大气的三维模型中的辐射传输模拟如何帮助我们探索其热和磁结构，从接近平衡的光球到高度非平衡的上层色球。本文最后对两个过渡区线散射过程产生的线极化信号的幅值和磁灵敏度进行了预测，这将鼓励我们开发用于探空火箭和空间望远镜的紫外偏振仪，以打开天体物理学的新诊断窗口。
This paper considers the problem of modeling the light polarization that emerges from an astrophysical plasma composed of atoms whose excitation state is significantly influenced by the anisotropy of the incident radiation field. In particular, it highlights how radiative transfer simulations in three-dimensional models of the quiet solar atmosphere may help us to probe its thermal and magnetic structure, from the near equilibrium photosphere to the highly non-equilibrium upper chromosphere. The paper finishes with predictions concerning the amplitudes and magnetic sensitivities of the linear polarization signals produced by scattering processes in two transition region lines, which should encourage us to develop UV polarimeters for sounding rockets and space telescopes with the aim of opening up a new diagnostic window in astrophysics.