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The interaction and eruption of two adjacent filaments
Kong DF(孔德芳)1,3; Yan XL(闫晓理)1,2; Xue ZK(薛志科)1,3
Source PublicationASTROPHYSICS AND SPACE SCIENCE
2013-12
Volume348Issue:2Pages:303-313
DOI10.1007/s10509-013-1582-3
Contribution Rank第1完成单位
Indexed BySCI
KeywordSun: filaments, prominences Sun: flares Sun: activity Sun: coronal mass ejections (CMEs)
Abstract

We present a case study of two successive filament eruptions at the southeast limb of the Sun observed by Solar Dynamics Observatory (SDO) on 2012 April 19. At the initial stage of the first filament (F1) eruption, one leg of the F1 moved toward the second filament (F2) and swept the F2. The interaction between two filaments occurred. After the leg of the F1 swept the F2, it returned from northeast to southwest following the F1 expansion. During the F1 eruption, the middle of the F1 exhibited an obvious twisted structure. The rising speed of the F1 was 85.6 km/s. The partial material of the F1 fell back to the surface along the other leg of the F1 after the F1 eruption and the falling speed was 311.6 km/s. A CME was observed by SOHO/LASCO after the F1 eruption. One of the bright flare ribbons and the dimming regions formed after the F1 eruption were found to move toward the F2. The propagation speeds of the flare ribbons were 4.7 km/s and 4.1 km/s and the propagation speeds of the dimmings were 3 km/s and 6.3 km/s. The small active region was emerging in the northern flank of the F2. The ejection and the falling plasma in the small active region produced the disturbance to the right part of the F2. When the F1 erupted, the large-scale overlying coronal loops of the F1 were pushed out toward the southeast of the Sun by its expanding. During the F1 eruption, the large-scale overlying coronal loops of the F2 began to open toward the southeast. Following the opening of the large-scale overlying coronal loops, the F2 became instable and began to erupt. The rising speed of the F2 was 300.1 km/s. A two-ribbon flare and a weak CME were formed after the F2 eruption. These observations evidenced that the interaction of two filaments and the opening of the large-scale overlying coronal loops caused by the F1 eruption are the most important reason that led to the F2 eruption. Our observations also support the standard solar flare model.

Funding ProjectNational Science Foundation of China (NSFC)[10903027] ; Yunnan Science Foundation of China[2009CD120] ; Key Laboratory of Solar Activity of CAS[KLSA201303]
Funding OrganizationNational Science Foundation of China (NSFC)[10903027] ; Yunnan Science Foundation of China[2009CD120] ; Key Laboratory of Solar Activity of CAS[KLSA201303]
Language英语
Subject Area天文学 ; 太阳与太阳系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherSPRINGER
Publication PlaceVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS
ISSN0004-640X
URL查看原文
Archive Date2013-11-07
WOS IDWOS:000326598800001
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordCORONAL MASS EJECTIONS ; UNSTABLE FLUX ROPES ; SOLAR-FLARES ; KINK INSTABILITY ; MAGNETIC INTERACTION ; BREAKOUT MODEL ; EMERGING FLUX ; X-RAY ; LOOP ; RECONNECTION
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/6217
Collection太阳物理研究组
Corresponding AuthorKong DF(孔德芳)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650011, China
2.University of Chinese Academy of Sciences, Zhongguancun, Beijing, 100049, China
3.Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Kong DF,Yan XL,Xue ZK. The interaction and eruption of two adjacent filaments[J]. ASTROPHYSICS AND SPACE SCIENCE,2013,348(2):303-313.
APA Kong DF,Yan XL,&Xue ZK.(2013).The interaction and eruption of two adjacent filaments.ASTROPHYSICS AND SPACE SCIENCE,348(2),303-313.
MLA Kong DF,et al."The interaction and eruption of two adjacent filaments".ASTROPHYSICS AND SPACE SCIENCE 348.2(2013):303-313.
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