论文标题
从循环促销系统中观察到汤姆森散射
Observations of Thomson scattering from a loop-prominence system
论文作者
论文摘要
我们描述了在X8.2耀斑溶液2017-09-10之后对低电晕中白光结构的观察，如太阳能动力学天文台的热溶和磁成像仪（HMI）在完整的Stokes参数中所观察到的。这些数据显示了明亮的回路和上方的扩散发射区域。我们将回路解释为经典环路促销系统的白光对应物，在热X射线环和冠状雨之间中间。循环外部的弥漫发射是线性极化的，并且在汤姆森在冷却和重组之前从热等离子体中散射的自然解释。 HMI的偏振数据使我们能够将散射与HMI伪符号测量的贡献区分开，并直接估计极化源中的冠状质量。对于16：19〜ut的快照，我们估计质量为$ 8 \ times 10^{14} $ 〜g。我们进一步得出结论，该来源的体积填充因子几乎是统一性的。
We describe observations of the white-light structures in the low corona following the X8.2 flare SOL2017-09-10, as observed in full Stokes parameters by the Helioseismic and Magnetic Imager (HMI) of the Solar Dynamics Observatory. These data show both bright loops and a diffuse emission region above them. We interpret the loops as the white-light counterpart of a classical loop-prominence system, intermediate between the hot X-ray loops and coronal rain. The diffuse emission external to the loops is linearly polarized and has a natural interpretation in terms of Thomson scattering from the hot plasma seen prior to its cooling and recombination. The polarimetric data from HMI enable us to distinguish this contribution of scattering from the HMI pseudo-continuum measurement, and to make a direct estimation of the coronal mass in the polarized source. For a snapshot at 16:19~UT, we estimate a mass $8 \times 10^{14}$~g. We further conclude that the volumetric filling factor of this source is near unity.
