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The Formation of a Small-Scale Filament After Flux Emergence on the Quiet Sun
Chen HC(陈何超)1,2,3; Yang JY(杨家艳)1,2; Yang B(杨波)1,2; Ji KF(季凯帆)1,2; Bi Y(毕以)1,2,3; Chen HC(陈何超), Email: chc@ynao.ac.cn
发表期刊SOLAR PHYSICS
2018-06-01
卷号293期号:6
DOI10.1007/s11207-018-1311-8
产权排序第1完成单位
收录类别SCI
关键词Prominences Magnetic Fields Velocity Fields Helicity Formation And Evolution Photosphere Photosphere Magnetic
摘要We present observations of the formation process of a small-scale filament on the quiet Sun during 5 - 6 February 2016 and investigate its formation cause. Initially, a small dipole emerged, and its associated arch filament system was found to reconnect with overlying coronal fields accompanied by numerous extreme ultraviolet bright points. When the bright points faded, many elongated dark threads formed and bridged the positive magnetic element of the dipole and the external negative network fields. Interestingly, an anticlockwise photospheric rotational motion (PRM) set in within the positive endpoint region of the newborn dark threads following the flux emergence and lasted for more than 10 hours. Under the drive of the PRM, these dispersive dark threads gradually aligned along the north-south direction and finally coalesced into an inverse S-shaped filament. Consistent with the dextral chirality of the filament, magnetic helicity calculations show that an amount of negative helicity was persistently injected from the rotational positive magnetic element and accumulated during the formation of the filament. These observations suggest that twisted emerging fields may lead to the formation of the filament via reconnection with pre-existing fields and release of its inner magnetic twist. The persistent PRM might trace a covert twist relaxation from below the photosphere to the low corona.
项目资助者Natural Science Foundation of China(11703084, 11633008, 11333007, 11573012, 11503081) ; CAS program "Light of West China" ; CAS program(QYZDJ-SSW-SLH012) ; Project of the Group for Innovation of Yunnan Province
语种英语
学科领域天文学
文章类型Article
ISSN0038-0938
URL查看原文
WOS记录号WOS:000435901200002
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]MAGNETIC INDUCTION EQUATION ; PROMINENCE FORMATION ; SOLAR PROMINENCES ; HELICITY ; SUNSPOT ; ROPE ; ERUPTION ; FIELDS ; FLARE ; TUBE
引用统计
被引频次:1[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/114a53/12408
专题抚仙湖太阳观测站
通讯作者Chen HC(陈何超), Email: chc@ynao.ac.cn
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
3.University of Chinese Academy of Sciences, 19A Yuquan Road, Shijingshan District, Beijing, 100049, China
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GB/T 7714
Chen HC,Yang JY,Yang B,et al. The Formation of a Small-Scale Filament After Flux Emergence on the Quiet Sun[J]. SOLAR PHYSICS,2018,293(6).
APA Chen HC,Yang JY,Yang B,Ji KF,Bi Y,&Chen HC.(2018).The Formation of a Small-Scale Filament After Flux Emergence on the Quiet Sun.SOLAR PHYSICS,293(6).
MLA Chen HC,et al."The Formation of a Small-Scale Filament After Flux Emergence on the Quiet Sun".SOLAR PHYSICS 293.6(2018).
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