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Rotating Magnetic Structures Associated with a Quasi-circular Ribbon Flare
Li HD(李海东)1,2; Jiang YC(姜云春)1; Yang JY(杨家艳)1; Yang B(杨波)1,2; Xu Z(徐喆)1,2; Hong JC(洪俊超)1; Bi Y(毕以)1,2; Li, Haidong(Chinese Acad Sci, Yunnan Observ, 396 Yangfangwang, Kunming 650216, Peoples R China)
发表期刊ASTROPHYSICAL JOURNAL
2017-02-20
卷号836期号:2
DOI10.3847/1538-4357/aa5eac
产权排序第1完成单位
收录类别SCI
关键词Sun: Activity Sun: Corona Sun: Filaments Sun: Flares Sun: Magnetic Fields Supporting Material: Animations
摘要We present the detection of a small eruption and the associated quasi-circular ribbon flare during the emergence of a bipole occurring on 2015 February 3. Under a fan dome, a sigmoid was rooted in a single magnetic bipole, which was encircled by negative polarity. The nonlinear force-free field extrapolation shows the presence of twisted field lines, which can represent a sigmoid structure. The rotation of the magnetic bipole may cause the twisting of magnetic field lines. An initial brightening appeared at one of the footpoints of the sigmoid, where the positive polarity slides toward a nearby negative polarity field region. The sigmoid displayed an ascending motion and then interacted intensively with the spine-like field. This type of null point reconnection in corona led to a violent blowout jet, and a quasi-circular flare ribbon was also produced. The magnetic emergence and rotational motion are the main contributors to the energy buildup for the flare, while the cancellation and collision might act as a trigger.
项目资助者Natural Science Foundation of China(11333007, 11403098, 11473065, 11573012, 11503081, 11503082, 11633008) ; CAS "Light of West China"and "QYZDJ-SSWSLH012" Programs
语种英语
学科领域天文学
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000401169200003
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]SOLAR ACTIVE-REGION ; SLIP-RUNNING RECONNECTION ; RAPID SUNSPOT ROTATION ; SEPARATRIX LAYERS ; X-RAY ; MULTIWAVELENGTH OBSERVATIONS ; RESOLUTION OBSERVATIONS ; CORONAL JETS ; FLUX ROPES ; FIELD
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/10063
专题太阳物理研究组
通讯作者Li, Haidong(Chinese Acad Sci, Yunnan Observ, 396 Yangfangwang, Kunming 650216, Peoples R China)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, China
2.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, China
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GB/T 7714
Li HD,Jiang YC,Yang JY,et al. Rotating Magnetic Structures Associated with a Quasi-circular Ribbon Flare[J]. ASTROPHYSICAL JOURNAL,2017,836(2).
APA Li HD.,Jiang YC.,Yang JY.,Yang B.,Xu Z.,...&Li, Haidong.(2017).Rotating Magnetic Structures Associated with a Quasi-circular Ribbon Flare.ASTROPHYSICAL JOURNAL,836(2).
MLA Li HD,et al."Rotating Magnetic Structures Associated with a Quasi-circular Ribbon Flare".ASTROPHYSICAL JOURNAL 836.2(2017).
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