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OBSERVATIONS OF THE GROWTH OF AN ACTIVE REGION FILAMENT
Yang B(杨波)1,2; Jiang YC(姜云春)1; Yang JY(杨家燕)1; Bi Y(毕以)1,2; Li HD(李海东)1,2; Yang, Bo(Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650216, Peoples R China)
发表期刊ASTROPHYSICAL JOURNAL
2016-10-10
卷号830期号:1
DOI10.3847/0004-637X/830/1/16
产权排序第1完成单位
收录类别SCI
关键词Sun: Activity Sun: Magnetic Fields Sun: Photosphere Sun: Filaments Prominences
摘要We present observations of the growth of an active region filament caused by magnetic interactions among the filament and its adjacent superpenumbral filament (SF) and dark thread-like structures (T). Multistep reconnections are identified during the whole growing process. Magnetic flux convergence and cancellation occurring at the positive footpoint region of the filament is the first step reconnection, which resulted in the filament bifurcating into two sets of intertwined threads. One set anchored in situ, while the other set moved toward and interacted with the SF and part of T. This indicates the second step reconnection, which gave rise to the disappearance of the SF and the formation of a long thread-like structure that connects the far ends of the filament and T. The long thread-like structure further interacted with the T and then separated into two parts, representing the third step reconnection. Finally, another similar long thread-like structure, which intertwined with the fixed filament threads, appeared. H alpha observations show that this twisted structure is a longer sinistral filament. Based on the observed photospheric vector magnetograms, we performed a non-linear force-free field extrapolation to reconstruct the magnetic fields above the photosphere and found that the coronal magnetic field lines associated with the filament consists of two twisted flux ropes winding around each other. These results suggest that magnetic interactions among filaments and their adjacent SFs and T could lead to the growth of the filaments, and the filament is probably supported in a flux rope.
项目资助者Natural Science Foundation of China(11473065, 11273056, 11333007, 11403098, 11503082, 11503081) ; Yunnan Province Natural Science Foundation(2013FB085)
语种英语
学科领域天文学
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000400461800010
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CORONAL MASS EJECTIONS ; FLUX-ROPE ; MAGNETIC-FIELDS ; SOLAR PROMINENCES ; PARTIAL ERUPTION ; HELICAL FLUX ; PHOTOSPHERIC FLOWS ; QUIESCENT FILAMENT ; SLOW RISE ; QUIET SUN
引用统计
被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/10771
专题太阳物理研究组
通讯作者Yang, Bo(Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650216, Peoples R China)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
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GB/T 7714
Yang B,Jiang YC,Yang JY,et al. OBSERVATIONS OF THE GROWTH OF AN ACTIVE REGION FILAMENT[J]. ASTROPHYSICAL JOURNAL,2016,830(1).
APA Yang B,Jiang YC,Yang JY,Bi Y,Li HD,&Yang, Bo.(2016).OBSERVATIONS OF THE GROWTH OF AN ACTIVE REGION FILAMENT.ASTROPHYSICAL JOURNAL,830(1).
MLA Yang B,et al."OBSERVATIONS OF THE GROWTH OF AN ACTIVE REGION FILAMENT".ASTROPHYSICAL JOURNAL 830.1(2016).
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