Magnetic Reconnection between Loops Accelerated By a Nearby Filament Eruption | |
Li, Leping2,3; Peter, Hardi1; Chitta, Lakshmi Pradeep1; Song, Hongqiang5; Ji KF(季凯帆)4; Xiang YY(向永源)4 | |
刊名 | ASTROPHYSICAL JOURNAL |
2021-02-01 | |
卷号 | 908期号:2页码:13 |
关键词 | Solar magnetic reconnection Plasma physics Solar corona Solar ultraviolet emission Solar magnetic fields |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/abd47e |
产权排序 | 第5完成单位 |
文献子类 | Article |
英文摘要 | Magnetic reconnection modulated by nonlocal disturbances in the solar atmosphere has been investigated theoretically, but rarely observed. In this study, employing H alpha and extreme ultraviolet (EUV) images and line-of-sight magnetograms, we report the acceleration of reconnection by an adjacent filament eruption. In H alpha images, four groups of chromospheric fibrils are observed to form a saddle-like structure. Among them, two groups of fibrils converge and reconnect. Two newly reconnected fibrils then form and retract away from the reconnection region. In EUV images, similar structures and evolution of coronal loops are identified. The current sheet forms repeatedly at the interface of reconnecting loops, with a width and length of 1-2 and 5.3-7.2 Mm and a reconnection rate of 0.18-0.3. It appears in the EUV low-temperature channels, with an average differential emission measure (DEM) weighed temperature and EM of 2 MK and 2.5 x 10(27) cm(-5). Plasmoids appear in the current sheet and propagate along it, and then further along the reconnection loops. The filament, located to the southeast of the reconnection region, erupts and pushes away the loops covering the reconnection region. Thereafter, the current sheet has a width and length of 2 and 3.5 Mm and a reconnection rate of 0.57. It becomes much brighter and appears in the EUV high-temperature channels, with an average DEM-weighed temperature and EM of 5.5 MK and 1.7 x 10(28) cm(-5). In the current sheet, more hotter plasmoids form. More thermal and kinetic energy is hence converted. These results suggest that the reconnection is significantly accelerated by the propagating disturbance caused by the nearby filament eruption. |
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 | Strategic Priority Research Program of Chinese Academy of Sciences[XDB 41000000] ; National Natural Science Foundations of China[12073042] ; National Natural Science Foundations of China[11790304] ; National Natural Science Foundations of China[11873059] ; National Natural Science Foundations of China[11773039] ; Key Research Program of Frontier Sciences[ZDBS-LY-SLH013] ; Chinese Academy of Sciences[QYZDJ-SSW-SLH050] ; National Natural Science Foundation of China[U2031109] |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000624499600001 |
资助机构 | Strategic Priority Research Program of Chinese Academy of Sciences[XDB 41000000] ; National Natural Science Foundations of China[12073042, 11790304, 11873059, 11773039] ; Key Research Program of Frontier Sciences[ZDBS-LY-SLH013] ; Chinese Academy of Sciences[QYZDJ-SSW-SLH050] ; National Natural Science Foundation of China[U2031109] |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/24191] |
专题 | 云南天文台_抚仙湖太阳观测站 |
通讯作者 | Li, Leping |
作者单位 | 1.Max Planck Institute for Solar System Research, D-37077 Göttingen, Germany 2.University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China 3.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China 4.Yunnan Observatories, Chinese Academy of Sciences, 650216 Kunming, People's Republic of China 5.Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, and Institute of Space Sciences, Shandong University, Weihai, Shandong 264209, People's Republic of China |
推荐引用方式 GB/T 7714 | Li, Leping,Peter, Hardi,Chitta, Lakshmi Pradeep,et al. Magnetic Reconnection between Loops Accelerated By a Nearby Filament Eruption[J]. ASTROPHYSICAL JOURNAL,2021,908(2):13. |
APA | Li, Leping,Peter, Hardi,Chitta, Lakshmi Pradeep,Song, Hongqiang,Ji KF,&Xiang YY.(2021).Magnetic Reconnection between Loops Accelerated By a Nearby Filament Eruption.ASTROPHYSICAL JOURNAL,908(2),13. |
MLA | Li, Leping,et al."Magnetic Reconnection between Loops Accelerated By a Nearby Filament Eruption".ASTROPHYSICAL JOURNAL 908.2(2021):13. |
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