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THE RAPID FORMATION OF A FILAMENT CAUSED BY MAGNETIC RECONNECTION BETWEEN TWO SETS OF DARK THREADLIKE STRUCTURES
Yang B(杨波)1,2; Jiang YC(姜云春)1; Yang JY(杨家艳)1; Yu SP(余顺平)1,2; Xu Z(徐喆)1,2
Source PublicationASTROPHYSICAL JOURNAL
2016
Volume816Issue:1
DOI10.3847/0004-637X/816/1/41
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun: activity Sun: atmosphere Sun: filaments, prominences Sun: magnetic fields
Abstract

Taking advantage of the high spatiotemporal resolution observations from the Atmospheric Imaging Assembly (AIA) and the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory, we present rare observations of the rapid formation of a filament caused by magnetic reconnection between two sets of dark threadlike structures. The two sets of dark threadlike structures belong to distinct flux systems with their adjacent ends anchored in an opposite-polarity magnetic field region, where the calculated photospheric velocity field shows that converging flows dominate there. Due to the converging flows, opposite-polarity magnetic flux converged and then canceled, leading to the formation of extreme ultraviolet (EUV) brightening that spread in opposite directions along the spine of the dark threadlike structures. Meanwhile, very weak remote brightening in the other terminals of the dark threadlike structures, as well as EUV loops, which rooted in the opposite-polarity magnetic field region, appeared. In addition, all of the AIA Fe line observations reveal that a flux rope was formed and underwent a rolling motion during the fadeaway of the EUV brightening. Soon after, as the EUV brightening disappeared, a filament that is very likely composed of two sets of intertwined dark threadlike structures was formed. Via differential emission measure (EM) analysis, it is found that both the EM and temperature of the plasma around the flux-canceling site increased during the brightening, implying that there, magnetic reconnection may occur to heat the plasma. These observations provide evidence that the filament is formed by magnetic reconnection associated with flux convergence and cancellation, and the magnetic structure of the filament is most likely 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] ; Yunnan Province Natural Science Foundation (NSF)[2013FB085]
Funding OrganizationNatural Science Foundation of China[11473065,11273056,11333007,11403098] ; Yunnan Province Natural Science Foundation (NSF)[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
Archive Date2016-12-14
WOS IDWOS:000368225100041
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCORONAL MASS EJECTIONS ; ACTIVE-REGION FILAMENT ; FLUX-ROPE ; HELICAL FLUX ; QUIESCENT PROMINENCES ; PHOTOSPHERIC FLOWS ; SOLAR PROMINENCES ; QUIET SUN ; ERUPTION ; EMERGENCE
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9403
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. THE RAPID FORMATION OF A FILAMENT CAUSED BY MAGNETIC RECONNECTION BETWEEN TWO SETS OF DARK THREADLIKE STRUCTURES[J]. ASTROPHYSICAL JOURNAL,2016,816(1).
APA Yang B,Jiang YC,Yang JY,Yu SP,&Xu Z.(2016).THE RAPID FORMATION OF A FILAMENT CAUSED BY MAGNETIC RECONNECTION BETWEEN TWO SETS OF DARK THREADLIKE STRUCTURES.ASTROPHYSICAL JOURNAL,816(1).
MLA Yang B,et al."THE RAPID FORMATION OF A FILAMENT CAUSED BY MAGNETIC RECONNECTION BETWEEN TWO SETS OF DARK THREADLIKE STRUCTURES".ASTROPHYSICAL JOURNAL 816.1(2016).
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