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Photospheric magnetic field changes associated with the activations of a quiescent filament
Jiang YC(姜云春)1,2; Wang, JX1; Jiang, Y
Source PublicationASTRONOMY & ASTROPHYSICS
2000-04
Volume356Issue:3Pages:1055-1066
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun : Prominences Sun : Filaments Sun : Activity Sun : Magnetic Fields
AbstractThe disturbances of a quiescent filament and associated evolution of photospheric magnetic field were examined. The whole filament was broken into three sections by two filament breaks. In different sections, three distinct disturbances took place: two major ones with similar characteristics and a transient one. The presence of filament twist and the highly sheared filament magnetic field were clearly revealed by the velocity patterns during the two major disturbances. In photospheric magnetograms, both filament breaks located between opposite polarity magnetic elements with obvious changes of magnetic flux. The two opposite polarity knots at one break showed increasing flux but no interaction. At the other break, however, the two opposite polarity elements not only increased in flux but also collided with each other, and so led to a relatively steep field gradient across the axis of the filament; it was evident that flux cancellation and resultant reduction of field gradient occurred here. In addition, several ephemeral regions and small cancelling magnetic features (CMFs) appeared in the filament channel in the course of filament disturbances. The cause of the filament disturbances was interpreted as slow magnetic reconnection resulting from the flux emergence and cancellation, and the possible formation process of filament twist is discussed.
Language英语
Subject AreaAstronomy & Astrophysics
SubtypeArticle
ISSN0004-6361
URL查看原文
Archive Date2000-12-31
WOS IDWOS:000087446700033
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordTWISTED FLUX-TUBE ; SOLAR PROMINENCES ; ACTIVE REGION ; H-ALPHA ; PATTERNS ; CORONA ; MODEL
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6033
Collection太阳物理研究组
Corresponding AuthorJiang, Y
Affiliation1.Beijing Astronomical Observatory, National Astronomical Observatories, Chinese Academy of Science, Beijing 100012, P.R. China
2.Yunnan Astronomical Observatory, Chinese Academy of Science, Kunming 650011, P.R. China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Jiang YC,Wang, JX,Jiang, Y. Photospheric magnetic field changes associated with the activations of a quiescent filament[J]. ASTRONOMY & ASTROPHYSICS,2000,356(3):1055-1066.
APA Jiang YC,Wang, JX,&Jiang, Y.(2000).Photospheric magnetic field changes associated with the activations of a quiescent filament.ASTRONOMY & ASTROPHYSICS,356(3),1055-1066.
MLA Jiang YC,et al."Photospheric magnetic field changes associated with the activations of a quiescent filament".ASTRONOMY & ASTROPHYSICS 356.3(2000):1055-1066.
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