YNAO OpenIR  > 抚仙湖太阳观测和研究基地
Observational Evidence of Magnetic Reconnection Associated with Magnetic Flux Cancellation
Yang B(杨波)1,2,3; Yang JY(杨家艳)1,2; Bi Y(毕以)1,2; Hong JC(洪俊超)1,2; Li HD(李海东)1,2; Xu Z(徐喆)1,2,4; Chen HC(陈何超)1,2,4
发表期刊ASTROPHYSICAL JOURNAL
2018-07-10
卷号861期号:2页码:8
DOI10.3847/1538-4357/aac37f
产权排序第1完成单位
收录类别SCI
关键词Sun: activity Sun: atmosphere Sun: magnetic fields
摘要

Using high spatial and temporal data from the Solar Dynamics Observatory (SDO) and the Interface Region Imaging Spectrograph (IRIS), several observational signatures of magnetic reconnection in the course of magnetic flux cancellation are presented, including two loop-loop interaction processes, multiple plasma blob ejections, and a sheet-like structure that appeared above the flux cancellation sites with a Y-shaped and an inverted Y-shaped end. The IRIS. 1400 A observations show that the plasma blobs were ejected from the tip of the Y-shaped ends of the sheet-like structure. Obvious photospheric magnetic flux cancellation occurred after the first loop-loop interaction and continued until the end of the observation. Complemented by the nonlinear force-free field extrapolation, we found that two sets of magnetic field lines, which revealed an X-shaped configuration, aligned well with the interacted coronal loops. Moreover, a magnetic null point was found to be situated at about 0.9 Mm height, which was right above the flux cancellation sites and located between the two sets of magnetic field lines. These results suggest that the flux cancellation might be a result of the submergence of magnetic field lines following a magnetic reconnection that occurs in the lower atmosphere of the Sun, and the ejected plasma blobs should be plasmoids created in the sheet-like structure due to the tearing-mode instability. This observation reveals a detailed magnetic field structure and a dynamic process above the flux cancellation sites and will help us to understand magnetic reconnection in the lower atmosphere of the Sun.

资助项目Natural Science Foundation of China[11703084] ; Natural Science Foundation of China[11633008] ; Natural Science Foundation of China[11333007] ; Natural Science Foundation of China[11503081] ; Natural Science Foundation of China[11503082] ; CAS "Light of West China" Program ; Open Research Program of the Key Laboratory of Solar Activity of Chinese Academy of Sciences[KLSA201809] ; CAS[QYZDJ-SSW-SLH012] ; Project of the Group for Innovation of Yunnan Province
项目资助者Natural Science Foundation of China[11703084, 11633008, 11333007, 11503081, 11503082] ; CAS "Light of West China" Program ; Open Research Program of the Key Laboratory of Solar Activity of Chinese Academy of Sciences[KLSA201809] ; CAS[QYZDJ-SSW-SLH012] ; Project of the Group for Innovation of Yunnan Province
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:000438684300015
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CORONAL MASS EJECTIONS ; SOLAR-FLARE ; CURRENT SHEET ; PLASMOID EJECTIONS ; ACTIVE-REGION ; QUIET SUN ; FIELD ; LOOP ; ERUPTION ; SITES
引用统计
被引频次:8[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/114a53/21535
专题抚仙湖太阳观测和研究基地
通讯作者Yang B(杨波)
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
3.Key Laboratory of Solar Activity, National Astronomical Observatories of Chinese Academy of Science, Beijing 100012, People's Republic of China
4.University of Chinese Academy of Sciences, 19A Yuquan Road, Shijingshan District, Beijing 100049, 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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GB/T 7714
Yang B,Yang JY,Bi Y,et al. Observational Evidence of Magnetic Reconnection Associated with Magnetic Flux Cancellation[J]. ASTROPHYSICAL JOURNAL,2018,861(2):8.
APA Yang B.,Yang JY.,Bi Y.,Hong JC.,Li HD.,...&Chen HC.(2018).Observational Evidence of Magnetic Reconnection Associated with Magnetic Flux Cancellation.ASTROPHYSICAL JOURNAL,861(2),8.
MLA Yang B,et al."Observational Evidence of Magnetic Reconnection Associated with Magnetic Flux Cancellation".ASTROPHYSICAL JOURNAL 861.2(2018):8.
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