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Observations of Magnetic Reconnection with Large Separatrix Angles and Separatrix Jets above the Solar Surface
Xue ZK(薛志科)1,2,3; Yan XL(闫晓理)1,3; Yang LH(杨丽恒)1,2,3; Chen, J.2; Wang JC(王金成)1,3; Liu Z(刘忠)1,3,4; Lee, K. H.5; Lee, L. C.5,6
发表期刊ASTROPHYSICAL JOURNAL
2021-07
卷号915期号:1
DOI10.3847/1538-4357/abfb71
产权排序第1完成单位
收录类别SCI
摘要

We analyze six cases of magnetic reconnection with large separatrix angles and separatrix jets observed on the solar disk. The separatrix angle is defined as the angle between the two separatrices on the two sides of the outflow region. The plasma jets are observed immediately downstream of the separatrices. The morphological characteristics and magnetic field configurations of all magnetic reconnections are displayed. At the same time, we calculate several physical parameters of each case, which include the inflow velocity (from 2.3 to 24 km s(-1)), the outflow velocity (from 1.9 to 43 km s(-1)), the separatrix jet velocity (from 13 to 82 km s(-1)), the width (from 0.42 x 10(3) to 1.2 x 10(3) km) and length (from 1.4 x 10(3) to 4.3 x 10(3) km) of the current sheet, and the separatrix angle theta (sep) (from 72 degrees to 128 degrees). We find that the outflow velocity, the separatrix jet velocity, and the width and length of the current sheet are positively related to the inflow velocity, but the separatrix angle does not depend on the inflow velocity and it is related to the initial magnetic field configuration before magnetic reconnection. Meanwhile, the velocities of the outflow and the separatrix jet decrease with increasing vertical bar theta(sep)-90 degrees vertical bar, indicating that when the separatrix angle is close to 90 degrees, the jet and the outflow reach their maximum velocities. These observations are compared with the results of the theoretical model and the numerical simulation.

资助项目National Key R&D Program of China[2019YFA0405000] ; National Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC)[11873087] ; National Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC)[11803085] ; National Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC)[11803086] ; National Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC)[11633008] ; National Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC)[U1831210] ; Yunnan Science Foundation of China[2018FB007] ; Yunnan Science Foundation of China[2018FA001] ; Youth Innovation Promotion Association, CAS[2019061] ; Youth Innovation Promotion Association, CAS[2011056] ; CAS Key Laboratory of Solar Activity, National Astronomical Observatories[KLSA202104] ; CAS Key Laboratory of Solar Activity, National Astronomical Observatories[KLSA202101] ; CAS Light of West China Program ; Project of the Group for Innovation of Yunnan Province ; Ministry of Science and Technology in TaiwanMinistry of Science and Technology, Taiwan[MOST 109-2111-M-002-001] ; Science and Technology Development Fund (FDCT) of Macau[0035/2018/AFJ]
项目资助者National Key R&D Program of China[2019YFA0405000] ; National Science Foundation of China (NSFC)National Natural Science Foundation of China (NSFC)[11873087, 11803085, 11803086, 11633008, U1831210] ; Yunnan Science Foundation of China[2018FB007, 2018FA001] ; Youth Innovation Promotion Association, CAS[2019061, 2011056] ; CAS Key Laboratory of Solar Activity, National Astronomical Observatories[KLSA202104, KLSA202101] ; CAS Light of West China Program ; Project of the Group for Innovation of Yunnan Province ; Ministry of Science and Technology in TaiwanMinistry of Science and Technology, Taiwan[MOST 109-2111-M-002-001] ; Science and Technology Development Fund (FDCT) of Macau[0035/2018/AFJ]
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:000667937200001
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CURRENT SHEET ; FIELD RECONNECTION ; MODEL ; LINE ; FILAMENT ; CONNECTION ; INFLOW ; FLARES
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被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
版本出版稿
条目标识符http://ir.ynao.ac.cn/handle/114a53/24457
专题抚仙湖太阳观测和研究基地
通讯作者Lee, L. C.
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, People's Republic of China;
2.CAS Key Laboratory of Solar Activity, National Astronomical Observatories, Beijing, People's Republic of China;
3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, Beijing, People's Republic of China;
4.University of Chinese Academy of Sciences, Beijing, People's Republic of China;
5.Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan;
6.Space Science Institute, Macau University of Science and Technology, Macau, People's Republic of China; louclee@earth.sinica.edu.tw
第一作者单位中国科学院云南天文台
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Xue ZK,Yan XL,Yang LH,et al. Observations of Magnetic Reconnection with Large Separatrix Angles and Separatrix Jets above the Solar Surface[J]. ASTROPHYSICAL JOURNAL,2021,915(1).
APA Xue ZK.,Yan XL.,Yang LH.,Chen, J..,Wang JC.,...&Lee, L. C..(2021).Observations of Magnetic Reconnection with Large Separatrix Angles and Separatrix Jets above the Solar Surface.ASTROPHYSICAL JOURNAL,915(1).
MLA Xue ZK,et al."Observations of Magnetic Reconnection with Large Separatrix Angles and Separatrix Jets above the Solar Surface".ASTROPHYSICAL JOURNAL 915.1(2021).
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