Formation of a Solar Filament by Magnetic Reconnection, Associated Chromospheric Evaporation, and Subsequent Coronal Condensation
Formation of a Solar Filament by Magnetic Reconnection, Associated Chromospheric Evaporation, and Subsequent Coronal Condensation
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通过磁重联、相关色球层蒸发和随后的日冕凝聚形成太阳细丝
DOI：
10.3847/2041-8213/ac31b6
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发表时间：
2021-10
期刊：
影响因子：
--
通讯作者：
Xu Z
中科院分区：
文献类型：
--
作者：
Yang B;Yang JY;Bi Y;Hong JC;Xu Z
We present the first observation of a solar filament formed by magnetic reconnection, associated chromospheric evaporation, and subsequent coronal condensation. Driven by shearing motion during flux emergence, a sequential tether-cutting reconnection process occurred and resulted in an M1.3 confined flare accompanied by the formation of a sigmoid structure. It is found that the flare had conjugate compact footpoint brightenings, which correspond to the footpoints of the sigmoid. Furthermore, observational evidence of explosive evaporation is well diagnosed at the conjugate footpoint brightenings in the impulsive phase of the flare. After the flare, continuous cool condensations formed at about the middle section of the sigmoid and then moved in opposite directions along the sigmoid, eventually leading to the formation of the filament. These observations suggest that magnetic reconnection can not only form the magnetic field structure of the filament but also heat the chromospheric footpoints during their formation and drive chromospheric evaporation. As a result, the heated chromospheric plasma may be evaporated into the magnetic field structure of the filament, where the accumulated hot plasma might suffer from thermal instability or nonequilibrium, causing catastrophic cooling and coronal condensation to form the cool, dense material of the filament. This observation lends strong support to the evaporation–condensation model and highlights the crucial role of magnetic reconnection in forming both the magnetic field structure and the cool, dense material of the filaments.
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DOI：
10.3847/2041-8213/abfbe0
发表时间：
2021-04
期刊：
The Astrophysical Journal Letters
影响因子：
--
作者：
C. Huang;J. Guo;Y. Ni;A. Xu;P. Chen
通讯作者：
C. Huang;J. Guo;Y. Ni;A. Xu;P. Chen
远程足点的加热作为太阳大气中环流喷射流的制动
DOI：
10.3847/1538-4357/ab96bd
发表时间：
2020
期刊：
The Astrophysical Journal
影响因子：
--
作者：
Zhenghua Huang;Qingmin Zhang;Lidong Xia;Bo Li;Zhao Wu;Hui Fu
通讯作者：
Hui Fu
太阳日冕环之间的磁重联引起的日冕凝聚
影响因子：
7.9
作者：
Leping Li;Jun Zhang;Hardi Peter;Lakshmi Pradeep Chitta;Jiangtao Su;Chun Xia;Hongqiang Song;Yijun Hou
通讯作者：
Yijun Hou
影响因子：
2.8
作者：
W. Pesnell;B. Thompson;P. Chamberlin
通讯作者：
W. Pesnell;B. Thompson;P. Chamberlin
DOI：
10.3847/1538-4357/ab0c9e
发表时间：
2019-03
期刊：
The Astrophysical Journal
影响因子：
--
作者：
Bo Yang;Huadong Chen
通讯作者：
Bo Yang;Huadong Chen