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Two Intermittent Eruptions of a Minifilament Triggered by a Two-step Magnetic Reconnection Within a Fan-spine Configuration

文献类型：期刊论文

作者Yang LP(杨丽平)4,5; Xue ZK(薛志科)3,5; Wang JC(王金成)3,5; Yang LH(杨丽恒)3,5; Li, Qiaoling1,2; Zhou YA(周羿安)3,5; Peng Y(彭洋)4,5; Zhang XS(张鑫生)4,5
刊名ASTROPHYSICAL JOURNAL
出版日期2024-11-01
卷号976期号:1
ISSN号0004-637X
DOI10.3847/1538-4357/ad84f9
产权排序第1完成单位
文献子类Article
英文摘要Although numerous works have concentrated on minifilament eruption in complex configurations, the detailed triggering mechanism is still an open question. Using the observational data from the New Vacuum Solar Telescope and Solar Dynamics Observatory, we studied a two-step magnetic reconnection process that triggered a minifilament that erupted intermittently within a fan-spine structure in the active region NOAA 13272. The first-step reconnection occurred between a set of low-lying small-scale magnetic loops and their nearby inner spine, resulting in the appearance of a brightening at the reconnection site and the reconfiguration of the inner spine. As the reconfigured inner spine approached the outer spine, reconnection occurred between them at the null point and led to the minifilament erupting partially. Subsequently, this two-step reconnection scenario occurred again and triggered the minifilament to erupt completely. The null point reconnection was supported by the changes in the topological structure of the inner spine and the outer spine, circular ribbon flares, remote brightenings, and the brightening of the outer spine. The null point reconnection related to the second eruption was also confirmed by some plasmoids expelled from the reconnection site. Further, the results of the magnetic field extrapolation reveal the existence of a fan-spine structure involving a three-dimensional null point. We suggest that the two-step reconnection triggers the two eruptions, in which the null point reconnection plays a direct role, but the dynamical evolution of the inner spine and the outer spine driven by the first-step reconnection might be a precursor of the subsequent null point reconnection.
学科主题天文学 ; 太阳与太阳系
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词CIRCULAR-RIBBON FLARES ; QUASI-SEPARATRIX LAYERS ; SOLAR CORONAL JETS ; X-RAY JETS ; FILAMENT ERUPTIONS ; FLUX ROPE ; BLOWOUT JET ; NULL POINTS ; H-ALPHA ; REGION
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0560000]; National Science Foundation of China (NSFC)[12325303]; National Science Foundation of China (NSFC)[12203097]; National Science Foundation of China (NSFC)[12433010]; Yunnan Science Foundation of China[202201AT070194]; Yunnan Science Foundation of China[202101AT070032]; Yunnan Science Foundation of China[202301AT070347]; Key Research and Development Project of Yunnan Province[202003AD150019]; CAS Light of West China Program; Yunnan Key Laboratory of Solar Physics and Space Science[202205AG070009]; Yunnan Provincial Science and Technology Department[202305AH340002]; Yunnan Science Foundation for Distinguished Young Scholars[202001AV070004]; Yunnan Fundamental Research Projects[202301AT070349]; Yunnan Revitalization Talent Support Program[202305AS350029]; Yunnan Revitalization Talent Support Program[202305AT350005]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001358780700001
出版者IOP Publishing Ltd
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0560000] ; National Science Foundation of China (NSFC)[12325303, 12203097, 12433010] ; Yunnan Science Foundation of China[202201AT070194, 202101AT070032, 202301AT070347] ; Key Research and Development Project of Yunnan Province[202003AD150019] ; CAS Light of West China Program ; Yunnan Key Laboratory of Solar Physics and Space Science[202205AG070009] ; Yunnan Provincial Science and Technology Department[202305AH340002] ; Yunnan Science Foundation for Distinguished Young Scholars[202001AV070004] ; Yunnan Fundamental Research Projects[202301AT070349] ; Yunnan Revitalization Talent Support Program[202305AS350029, 202305AT350005]
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/27793]  
专题云南天文台_抚仙湖太阳观测站
作者单位1.Department of Astronomy, Key Laboratory of Astroparticle Physics of Yunnan Province, Yunnan University, Kunming 650091, People's Republic of China
2.Department of Physics, Yunnan University, Kunming 650091, People's Republic of China;
3.Yunnan Key Laboratory of Solar Physics and Space Science, Kunming 650216, People's Republic of China;
4.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China;
5.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People's Republic of China; zkxue@ynao.ac.cn;
推荐引用方式
GB/T 7714		 Yang LP,Xue ZK,Wang JC,et al. Two Intermittent Eruptions of a Minifilament Triggered by a Two-step Magnetic Reconnection Within a Fan-spine Configuration[J]. ASTROPHYSICAL JOURNAL,2024,976(1).
APA 杨丽平.,薛志科.,王金成.,杨丽恒.,Li, Qiaoling.,...&张鑫生.(2024).Two Intermittent Eruptions of a Minifilament Triggered by a Two-step Magnetic Reconnection Within a Fan-spine Configuration.ASTROPHYSICAL JOURNAL,976(1).
MLA 杨丽平,et al."Two Intermittent Eruptions of a Minifilament Triggered by a Two-step Magnetic Reconnection Within a Fan-spine Configuration".ASTROPHYSICAL JOURNAL 976.1(2024).

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来源：云南天文台

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