论文标题

直接观察复杂的冠状网络驱动高度结构化慢性太阳风

Direct observations of a complex coronal web driving highly structured slow solar wind

论文作者

Chitta, L. P., Seaton, D. B., Downs, C., DeForest, C. E., Higginson, A. K.

论文摘要

太阳风是由带电颗粒的连续流从太阳逃入地球层的连续流,并分为快速和缓慢的组件,从冠状孔的内部出现了快风。在黄道平面附近,低纬度冠状孔的快风与高度结构化的慢性太阳风相连,源区域和驱动因素的理解不足。在这里,我们报告了极端的耗分型观测值,这些观察结果揭示了磁化等离子体结构的空间复杂的网络,该网络持续相互作用和重新连接中间的电晕。冠状白光图像显示了这些冠状网络结构上慢风流的同时出现。借助高级全球MHD冠状模型,我们证明了观察到的冠状网是磁性分离网络(S-WEB)的直接烙印。通过揭示S-WEB的高度动态部分,我们的观察结果打开了一个重要的中绕过程的窗口,这些过程似乎在驱动结构化的慢太阳风中起着关键作用。

The solar wind consists of continuous streams of charged particles that escape into the heliosphere from the Sun, and is split into fast and slow components, with the fast wind emerging from the interiors of coronal holes. Near the ecliptic plane, the fast wind from low-latitude coronal holes is interspersed with a highly structured slow solar wind, the source regions and drivers of which are poorly understood. Here we report extreme-ultraviolet observations that reveal a spatially complex web of magnetized plasma structures that persistently interact and reconnect in the middle corona. Coronagraphic white-light images show concurrent emergence of slow wind streams over these coronal web structures. With advanced global MHD coronal models, we demonstrate that the observed coronal web is a direct imprint of the magnetic separatrix web (S-web). By revealing a highly dynamic portion of the S-web, our observations open a window into important middle-coronal processes that appear to play a key role in driving the structured slow solar wind.

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