Multiwavelength Observation of a Failed Eruption from a Helical Kink-unstable Prominence
Xu,Haiqing1; Su,Jiangtao1,2; Chen,Jie1; Ruan,Guiping3; Awasthi,Arun Kumar4; Zhang,Hongqi1; Zhang,Mei1,2; Ji,Kaifan5; Zhang,Yuzong1; Liu,Jiajia6
Source PublicationThe Astrophysical Journal
AbstractAbstract Multiwavelength observations of a prominence eruption provide an opportunity to uncover the physical mechanism of the triggering and the evolution process of the eruption. In this paper, we investigate a prominence that erupted on 2012 October 14, recorded in Hα, EUV, and X-ray wavelengths. The process of the eruption gives evidence for the existence of a helical magnetic structure showing the twist converting to writhe. The estimated twist is (three turns), exceeding the threshold of the kink instability. The rising plasma reached a high speed of 228 km s?1, followed by a sudden rapid acceleration of 2715 m s?2, and was synchronous with a solar flare. Co-spatial cusp-shaped structures were observed in both 131 and 94 ? images from the Atmospheric Imaging Assembly, signifying the location of the magnetic reconnection. The erupted flux rope finally underwent a deceleration with a maximum value of 391 m s?2, which is larger than the freefall acceleration on the Sun (273 m s?2), suggesting that the eruption finally failed, possibly due to an inward magnetic tension force.
KeywordSolar activity Solar flares Solar filaments Solar prominences Solar magnetic reconnection
WOS IDIOP:0004-637X-901-2-abb01d
PublisherThe American Astronomical Society
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Document Type期刊论文
Corresponding AuthorXu,Haiqing
Affiliation1.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China
2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, People’s Republic of China
3.Institute of Space Sciences and School of Space Science and Physics, Shandong University, Weihai 264209, People’s Republic of China
4.CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Sciences, University of Science and Technology of China, Hefei 230026, People’s Republic of China
5.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650216, People’s Republic of China
6.Astrophysics Research Centre, School of Mathematics & Physics, Queen’s University Belfast, Belfast BT7 1NN, UK
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
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GB/T 7714
Xu,Haiqing,Su,Jiangtao,Chen,Jie,et al. Multiwavelength Observation of a Failed Eruption from a Helical Kink-unstable Prominence[J]. The Astrophysical Journal,2020,901(2).
APA Xu,Haiqing.,Su,Jiangtao.,Chen,Jie.,Ruan,Guiping.,Awasthi,Arun Kumar.,...&Liu,Jiajia.(2020).Multiwavelength Observation of a Failed Eruption from a Helical Kink-unstable Prominence.The Astrophysical Journal,901(2).
MLA Xu,Haiqing,et al."Multiwavelength Observation of a Failed Eruption from a Helical Kink-unstable Prominence".The Astrophysical Journal 901.2(2020).
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