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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
Source PublicationASTROPHYSICAL JOURNAL
2016-10-10
Volume830Issue:1
DOI10.3847/0004-637X/830/1/16
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun: activity Sun: filaments, prominences Sun: magnetic fields Sun: photosphere
Abstract

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.

Funding ProjectNatural Science Foundation of China[11473065] ; Natural Science Foundation of China[11273056] ; Natural Science Foundation of China[11333007] ; Natural Science Foundation of China[11403098] ; Natural Science Foundation of China[11503082] ; Natural Science Foundation of China[11503081] ; Yunnan Province Natural Science Foundation[2013FB085]
Funding OrganizationNatural Science Foundation of China[11473065, 11273056, 11333007, 11403098, 11503082, 11503081] ; Yunnan Province Natural Science Foundation[2013FB085]
Language英语
Subject Area天文学 ; 太阳与太阳系 ; 太阳物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000400461800010
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCORONAL MASS EJECTIONS ; FLUX-ROPE ; MAGNETIC-FIELDS ; SOLAR PROMINENCES ; PARTIAL ERUPTION ; HELICAL FLUX ; PHOTOSPHERIC FLOWS ; QUIESCENT FILAMENT ; SLOW RISE ; QUIET SUN
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/10771
Collection太阳物理研究组
Corresponding AuthorYang B(杨波)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming 650216, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
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.(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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