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 | |
刊名 | ASTROPHYSICAL JOURNAL |
2018-07-10 | |
卷号 | 861期号:2页码:8 |
关键词 | Sun: activity Sun: atmosphere Sun: magnetic fields |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/aac37f |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | 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. |
学科主题 | 天文学 ; 太阳与太阳系 ; 太阳物理学 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
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 |
WOS关键词 | CORONAL MASS EJECTIONS ; SOLAR-FLARE ; CURRENT SHEET ; PLASMOID EJECTIONS ; ACTIVE-REGION ; QUIET SUN ; FIELD ; LOOP ; ERUPTION ; SITES |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000438684300015 |
资助机构 | 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 |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/21534] |
专题 | 云南天文台_抚仙湖太阳观测站 |
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 |
推荐引用方式 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. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论