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Failed eruptions of two intertwining small-scale filaments
Xue ZK(薛志科)1,2,3; Yan XL(闫晓理)1; Zhao L(赵丽)1; Xiang YY(向永源)1; Yang LH(杨丽恒)1; Guo, Yang3
发表期刊PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
2016-02-01
卷号68期号:1
DOI10.1093/pasj/psv113
产权排序第1完成单位
收录类别SCI
关键词Sun: activity Sun: corona Sun: filaments, prominences Sun: magnetic fields
摘要

Using multi-wavelength observations of the New Vacuum Solar Telescope (NVST), the Atmospheric Imaging Assembly (AIA) and Helioseismic and Magnetic Imager (HMI) on board the Solar Dynamics Observatory (SDO), we study the topology and evolutions of two filaments observed in NOAA active region (AR) 12031 on 2014 April 7. Before their eruptions, the two filaments (F1 and F2) were sinistral filaments, and the left part of F1 (LP) was located above F2, the right part of F1 (RP) under F2. They show an overall intertwining structure. LP erupted first and rotated clockwise. The total rotation angle was about 470 degrees (approximate to 2.61 pi). With its rotation, most of the plasma fell back, and thus it was a failed eruption. Meanwhile, when LP erupted to a higher altitude, the overlying magnetic loops were partially pushed from the northeast to the southwest with projected speeds from 36 to 105 km s(-1). Next, F2 began to erupt and, when reaching a certain height, the plasma of F2 started to fall down to their footpoints. Using the potential-field source-surface (PFSS) model, the decay indexes at five positions along the polarity inversion line of AR 12031 were calculated to be from 1.03 to 1.25 with an average value of 1.20 that was lower than the critical value for torus instability. These results imply that the kink instability was the main triggering mechanism for the eruption of F1, and the eruption of F2 was due to the decreasing of overlying magnetic loops caused by the eruption of F1. The eruptions of two filaments were confined by the large-scale overlying magnetic loops.

资助项目National Science Foundation of China (NSFC)[11503080] ; National Science Foundation of China (NSFC)[11573012] ; National Science Foundation of China (NSFC)[11373066] ; National Science Foundation of China (NSFC)[11373065] ; National Science Foundation of China (NSFC)[11473064] ; Key Laboratory of Solar Activity of CAS[KLSA201412] ; Key Laboratory of Solar Activity of CAS[KLSA201407] ; Yunnan Science Foundation of China[2013FB086] ; Talent Project of Western Light of Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS[2011056]
项目资助者National Science Foundation of China (NSFC)(11503080, 11573012, 11373066, 11373065, 11473064) ; Key Laboratory of Solar Activity of CAS(KLSA201412, KLSA201407) ; Yunnan Science Foundation of China(2013FB086) ; Talent Project of Western Light of Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS(2011056)
语种英语
学科领域天文学 ; 太阳与太阳系 ; 太阳物理学
学科门类理学 ; 理学::天文学
文章类型Article
出版者OXFORD UNIV PRESS
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0004-6264
URL查看原文
归档日期2016-12-15
WOS记录号WOS:000374571300010
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CORONAL MASS EJECTIONS ; DYNAMICS-OBSERVATORY SDO ; ACTIVE-REGION FILAMENT ; MAGNETIC-FLUX ROPE ; KINK INSTABILITY ; SOLAR-FLARES ; MINIATURE FILAMENT ; SLOW RISE ; MODEL ; LOOPS
引用统计
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/9609
专题抚仙湖太阳观测站
通讯作者Xue ZK(薛志科)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, Yunnan 650011, China
2.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
3.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing 210093, China
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GB/T 7714
Xue ZK,Yan XL,Zhao L,et al. Failed eruptions of two intertwining small-scale filaments[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2016,68(1).
APA Xue ZK,Yan XL,Zhao L,Xiang YY,Yang LH,&Guo, Yang.(2016).Failed eruptions of two intertwining small-scale filaments.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,68(1).
MLA Xue ZK,et al."Failed eruptions of two intertwining small-scale filaments".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 68.1(2016).
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