arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2106.04027astro-ph.SR
收藏

2020年12月14日日全食的双泡CME

The Double-Bubble CME of the 2020 December 14 Total Solar Eclipse

Benjamin Boe, Bryan Yamashiro, Miloslav Druckmuller, Shadia Habbal

摘要:

日全食继续为探索日冕的磁拓扑结构和研究诸如日冕物质抛射(CME)等动态事件提供宝贵的平台-与目前任何其他方法相比,日全食在更大的空间连续范围内具有更高的空间分辨率。在这封信中,我们提出了从太阳表面到超过5个太阳半径的“双泡”CME结构的完整范围的观测结果,如在2020年12月14日TSE期间捕获的。它通过日冕的演变是从两个观测点记录下来的,它们的全食时间相隔13分钟。日食观测得到了大量天基观测的补充,包括:SDO/AIA和STEREO-A/EUVI的太阳盘和低日冕的极紫外观测,SOHO/LASCO-C2的白光日冕观测,STEREO-A/WAVES和WIND/WAVES的无线电,以及GOES-16的X射线。我们还描述了磁场与位场源表面模型。这个CME事件本身特别有趣,因为它展示了导致双气泡结构的日珥通道和活动区域之间的相互作用。尽管有过多的天基观测,但只有日食数据能够提供适当的背景来连接这些观测,并对这种独特的CME进行详细研究。

英文摘要:

Total solar eclipses (TSEs) continue to provide an invaluable platform for exploring the magnetic topology of the solar corona and for studying dynamic events such as Coronal Mass Ejections (CMEs) -- with a higher spatial resolution over a larger spatially continuous extent than is possible to achieve with any other method at present. In this Letter, we present observations of the full extent of a `double-bubble' CME structure from the solar surface out to over 5 solar radii, as captured during the 2020 December 14 TSE. Its evolution through the corona was recorded from two observing sites separated by 13 minutes in their times of totality. The eclipse observations are complemented by a plethora of space-based observations including: Extreme Ultraviolet observations of the solar disk and low corona from SDO/AIA and STEREO-A/EUVI, white-light coronagraph observations from SOHO/LASCO-C2, radio from STEREO-A/WAVES and WIND/WAVES, and X-ray from GOES-16. We also characterize the magnetic field with a potential field source surface model. This CME event itself is of particular interest, as it demonstrates interactions between a prominence channel and an active region that led to the double-bubble structure. Despite the plethora of space-based observations, only the eclipse data are able to provide the proper context to connect these observations and yield a detailed study of this unique CME.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑