Transfer of Twists from a Mini-filament to Large-scale Loops by Magnetic Reconnection
Yang,Liheng1,2,3; Yan,Xiaoli1,2,4; Xue,Zhike1,2,4; Li,Ting4; Wang,Jincheng1,2; Li,Qiaoling1,2; Cheng,Xin3,5
Source PublicationThe Astrophysical Journal
AbstractAbstract With high spatial and temporal resolution, Hα data from the New Vacuum Solar Telescope, X-ray images from the X-ray telescope on board Hinode and simultaneous observations from the Solar Dynamics Observatory, we present multiwavelength observations of the interaction between a mini-filament (MF) and its overlying large-scale active-region loops (ARLs) that occurred in AR 12497 on 2016 February 13. The MF was activated by the convergence and cancellation of the magnetic flux under it. Brightenings first appeared at the junction of the MF and its overlying large-scale ARLs. A blowout jet with some plasma blobs was observed to move along the newly formed large-scale ARLs, and caused the oscillations of these loops. The blowout jet exhibited a counterclockwise rotation due to the untwisting motion of the MF, suggesting that the twist is transferred from the MF to the ARLs. The transferred twist was measured to be about 0.34–0.52 turn. During the interaction progress, a group of hot loops formed in the high-temperature wavelength (94 ?). These hot loops connected the west footpoints of the original ARLs and the east footpoints of the MF. The differential emission measure analysis demonstrated that these hot loops contained a high-temperature component (~8 MK). Meanwhile the footpoints of the ARLs were finally shifted to the west footpoint of the MF. These observations suggest that magnetic reconnection takes place between the MF and its overlying large-scale ARLs and results in a confined untwisting blowout jet.
KeywordSolar filaments Solar magnetic flux emergence Solar coronal loops Solar observatories Solar activity Solar magnetic fields Solar corona Solar magnetic reconnection Solar coronal transients Solar active regions Solar atmosphere Solar chromosphere
WOS IDIOP:0004-637X-887-2-ab55d7
PublisherThe American Astronomical Society
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Document Type期刊论文
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China;
2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing, 100012, People's Republic of China
3.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing 210093, People's Republic of China
4.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People's Republic of China
5.School of Astronomy and Space Science, Nanjing University, Nanjing 210093, People's Republic of China
Recommended Citation
GB/T 7714
Yang,Liheng,Yan,Xiaoli,Xue,Zhike,et al. Transfer of Twists from a Mini-filament to Large-scale Loops by Magnetic Reconnection[J]. The Astrophysical Journal,2019,887(2).
APA Yang,Liheng.,Yan,Xiaoli.,Xue,Zhike.,Li,Ting.,Wang,Jincheng.,...&Cheng,Xin.(2019).Transfer of Twists from a Mini-filament to Large-scale Loops by Magnetic Reconnection.The Astrophysical Journal,887(2).
MLA Yang,Liheng,et al."Transfer of Twists from a Mini-filament to Large-scale Loops by Magnetic Reconnection".The Astrophysical Journal 887.2(2019).
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