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A Fan Spine Jet: Nonradial Filament Eruption and the Plasmoid Formation
Li HD(李海东)1,2; Yang JY(杨家艳)1,2
发表期刊ASTROPHYSICAL JOURNAL
2019-02-10
卷号872期号:1页码:9
DOI10.3847/1538-4357/aafb3a
产权排序第1完成单位
收录类别SCI
关键词Sun: activity Sun: corona Sun: filaments, prominences
摘要

Using the data from SDO and NVST, we studied a circular filament eruption in association with the formation of jet under a nonaxisymmetric fan spine configuration. A nonradial motion of the filament toward a null point and the formation of a jet were presented in detail. This event contained a small circular filament, which was located above the polarity inversion line. The nonlinear force-free field extrapolation shows the presence of a nonaxisymmetric fan spine structure above the filament. Thus, the filament was confined by this magnetic field structure. Since the confining magnetic pressure decreases much faster toward the null point than anywhere else, the filament displayed a shift motion toward the null point that resulted in a collision, and a reconnection signature of bidirectional flows was observed. Due to the external magnetic reconnection, the topology of the filament field was reconfigured, accompanying by the scattered filament material spreading along nearby coronal loops, which resulted in a blowout jet. Particularly, some ejected plasma blobs were also observed in the vicinity of the interfaces between the filament and neighboring coronal loops. These blobs originating from the dissipation region may be plasmoids in association with tearing mode instability. We suggested that in pre jet phase the nonaxisymmetric fan spine configuration can act on the erupting filament, laterally deflecting and channeling its motion toward the null point, which may facilitate the jet formation by magnetic reconnection.

资助项目Natural Science Foundation of China[11703084] ; Natural Science Foundation of China[11633008] ; Natural Science Foundation of China[11503081] ; CAS program
项目资助者Natural Science Foundation of China[11703084, 11633008, 11503081] ; CAS program
语种英语
学科领域天文学 ; 太阳与太阳系 ; 太阳物理学
学科门类理学 ; 理学::天文学
文章类型Article
出版者IOP PUBLISHING LTD
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS记录号WOS:000458631300005
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CORONAL MASS EJECTION ; X-RAY JETS ; MAGNETIC RECONNECTION ; SOLAR FILAMENT ; REGION ; FLARE ; MODEL ; SITE ; EUV
引用统计
被引频次:13[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/114a53/19364
专题抚仙湖太阳观测和研究基地
通讯作者Li HD(李海东)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, People's Republic of China
2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, People's Republic of China
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
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Li HD,Yang JY. A Fan Spine Jet: Nonradial Filament Eruption and the Plasmoid Formation[J]. ASTROPHYSICAL JOURNAL,2019,872(1):9.
APA Li HD,&Yang JY.(2019).A Fan Spine Jet: Nonradial Filament Eruption and the Plasmoid Formation.ASTROPHYSICAL JOURNAL,872(1),9.
MLA Li HD,et al."A Fan Spine Jet: Nonradial Filament Eruption and the Plasmoid Formation".ASTROPHYSICAL JOURNAL 872.1(2019):9.
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