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题名: Observing the release of twist by magnetic reconnection in a solar filament eruption
作者: Xue, Zhike1, 2; Yan, Xiaoli1; Cheng, Xin3; Yang, Liheng1, 2; Su YingNa(宿英娜)4; Kliem, Bernhard1, 5; Zhang, Jun2; Liu, Zhong1; Bi, Yi1; Xiang, Yongyuan1; Yang, Kai3; Zhao, Li1
刊名: NATURE COMMUNICATIONS
出版日期: 2016-06-01
卷号: 7
DOI: 10.1038/ncomms11837
文章类型: Article
英文摘要: Magnetic reconnection is a fundamental process of topology change and energy release, taking place in plasmas on the Sun, in space, in astrophysical objects and in the laboratory. However, observational evidence has been relatively rare and typically only partial. Here we present evidence of fast reconnection in a solar filament eruption using high-resolution H-alpha images from the New Vacuum Solar Telescope, supplemented by extreme ultraviolet observations. The reconnection is seen to occur between a set of ambient chromospheric fibrils and the filament itself. This allows for the relaxation of magnetic tension in the filament by an untwisting motion, demonstrating a flux rope structure. The topology change and untwisting are also found through nonlinear force-free field modelling of the active region in combination with magnetohydrodynamic simulation. These results demonstrate a new role for reconnection in solar eruptions: the release of magnetic twist.
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
关键词[WOS]: X-RAY TELESCOPE ; DYNAMICS-OBSERVATORY SDO ; CORONAL MASS EJECTIONS ; 2010 APRIL 8 ; ACTIVE REGIONS ; CURRENT SHEET ; FLUX ROPE ; FLARE ; LOOP ; MODEL
收录类别: SCI
项目资助者: National Science Foundation of China(11503080 ; Key Laboratory of Solar Activity of Chinese Academy of Sciences (CAS)(KLSA201412 ; Yunnan Science Foundation of China(2013FB086) ; CAS 'Light of West China' Program ; Youth Innovation Promotion Association CAS(2011056) ; national basic research program of China (973 program)(2011CB811400) ; CAS(2012T1J0017) ; DFG ; One Hundred Talent Program of Chinese Academy of Sciences ; 11373066 ; KLSA201407) ; 11573012 ; 11373065 ; 11303016 ; 11533008 ; 11473071)
语种: 英语
WOS记录号: WOS:000378812000001
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16248
Appears in Collections:太阳活动的多波段观测研究团组_期刊论文

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作者单位: 1.Chinese Acad Sci, Yunnan Observ, Kunming 650216, Yunnan, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Key Lab Solar Act, Beijing 100012, Peoples R China
3.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China
4.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Sci, Nanjing 210008, Jiangsu, Peoples R China
5.Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany
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