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The Dynamics of AR 12700 in Its Early Emerging Phase. II. Fan-shaped Activities Relevant to Arch Filament Systems
Zhong, Sihui1,2; Hou, Yijun1,2; Li, Leping1,2; Zhang, Jun1,2; Xiang YY(向永源)3
发表期刊ASTROPHYSICAL JOURNAL
2019-09-10
卷号882期号:2页码:9
DOI10.3847/1538-4357/ab345c
产权排序第3完成单位
收录类别SCI
关键词Sun: activity Sun: atmosphere Sun: chromosphere Sun: evolution Sun: magnetic fields
摘要

wThe emergence of active regions (ARs) closely relates to the solar dynamo and dynamical atmospheric phenomena. With high-resolution and long-lasting observations from the New Vacuum Solar Telescope, we report a new dynamic activity phenomenon named "fan-shaped activity (FSA)" in the emerging phase of NOAA AR 12700. The FSAs are clearly observed at Ha wavelengths and are closely related to the dynamics of the adjacent arch filament system (AFS), including thread deformation and material downward motions. On 2018 February 26, the two most representative FSAs appeared around 05:21 UT and 06:03 UT, respectively, and they first ascended and then decayed within around 10 minutes. At the ascending phase, accompanied by the uplifting of an adjacent AFS, each FSA launches up at one end of the AFS and extends for up to similar to 11 Mm. At the decaying phase, the FSA gradually vanishes, and material downflows toward the other end of the AFS are detected. After checking the evolution of the magnetic fields of AR 12700, we find that each FSA is located between the end of an AFS and an adjacent magnetic patch with the same polarity and launches at the onset of the collision and compression between these two magnetic patches. We propose that the collision lifts up the AFS, and then the initially compact AFS laterally expands, resulting in the formation of FSA. A cartoon model is proposed to depict the activities.

资助项目National Natural Science Foundations of China[11533008] ; National Natural Science Foundations of China[11790304] ; National Natural Science Foundations of China[11903050] ; National Natural Science Foundations of China[11773039] ; National Natural Science Foundations of China[11673035] ; National Natural Science Foundations of China[11673034] ; National Natural Science Foundations of China[11873059] ; National Natural Science Foundations of China[11790300] ; Key Programs of the Chinese Academy of Sciences[QYZDJ-SSW-SLH050]
项目资助者National Natural Science Foundations of China[11533008, 11790304, 11903050, 11773039, 11673035, 11673034] ; National Natural Science Foundations of China[11873059, 11790300] ; Key Programs of the Chinese Academy of Sciences[QYZDJ-SSW-SLH050]
语种英语
学科领域天文学 ; 太阳与太阳系
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:000485673200007
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]H-ALPHA SURGES ; X-RAY JETS ; SUNSPOT LIGHT BRIDGE ; MAJOR SOLAR EVENT ; MAGNETIC RECONNECTION ; FLUX EMERGENCE ; TELESCOPE ; HINODE ; ORIGIN ; FIELD
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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/114a53/20974
专题抚仙湖太阳观测和研究基地
通讯作者Zhong, Sihui
作者单位1.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
2.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
3.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, People's Republic of China
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Zhong, Sihui,Hou, Yijun,Li, Leping,et al. The Dynamics of AR 12700 in Its Early Emerging Phase. II. Fan-shaped Activities Relevant to Arch Filament Systems[J]. ASTROPHYSICAL JOURNAL,2019,882(2):9.
APA Zhong, Sihui,Hou, Yijun,Li, Leping,Zhang, Jun,&Xiang YY.(2019).The Dynamics of AR 12700 in Its Early Emerging Phase. II. Fan-shaped Activities Relevant to Arch Filament Systems.ASTROPHYSICAL JOURNAL,882(2),9.
MLA Zhong, Sihui,et al."The Dynamics of AR 12700 in Its Early Emerging Phase. II. Fan-shaped Activities Relevant to Arch Filament Systems".ASTROPHYSICAL JOURNAL 882.2(2019):9.
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