| Numerical experiments on dynamic evolution of a CME-flare current sheet | |
Xie XY(谢小妍)1,2,3 ; Mei ZX(梅志星)1; Shen, Chengcai2; Cai, Qiangwei4; Ye J(叶景)1; Reeves, Katharine K2; Roussev, Ilia I5,6; Lin J(林隽)1,3,7
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| 发表期刊 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 2021-11-09 | |
| 卷号 | 509期号:1页码:406-420 |
| DOI | 10.1093/mnras/stab2954 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI ; EI |
| 关键词 | Sun: Flares MHD Magnetic reconnection Sun:coronal mass ejections (CMEs) Instabilities Plasmas |
| 摘要 | In this paper, we performed magnetohydrodynamics numerical experiments to look into the dynamic behaviour of the current sheet (CS) between the coronal mass ejection (CME) and the associated solar flare, especially the CS oscillation and plasmoid motions in coronal conditions. During the evolution, the disrupting magnetic configuration becomes asymmetric first in the buffer region at the bottom of the CME bubble. The Rayleigh-Taylor instability in the buffer region and the deflected motion of the plasma driven by the termination shock at the bottom of the CME bubble cause the buffer region to oscillate around the y-axis. The local oscillation propagates downwards through the CS, prompting an overall CS oscillation. As the buffer region grows, the oscillation period becomes longer, increasing from about 30 s to about 16 min. Meanwhile, there is another separated oscillation with a period between 0.25 and 1.5 min in the cusp region of the flare generated by velocity shearing. The tearing mode instability yields formations of plasmoids inside the CS. The motions of all the plasmoids observed in the experiment accelerate, which implies that the large-scale CME/flare CS itself in the true eruptive event is filled with the diffusion region according the the standard theory of magnetic reconnection. |
| 资助项目 | Strategic Priority Research Programme of Chinese Academy of Sciences[XDA17040507] ; Strategic Priority Research Programme of Chinese Academy of Sciences[QYZDJ-SSWSLH012] ; Natural Science Fundation of ChinaNational Natural Science Foundation of China (NSFC)[11933009] ; Natural Science Fundation of ChinaNational Natural Science Foundation of China (NSFC)[11973083] ; Natural Science Fundation of ChinaNational Natural Science Foundation of China (NSFC)[12073073] ; Natural Science Fundation of ChinaNational Natural Science Foundation of China (NSFC)[U2031141] ; Yunling Scholar Project of the Yunnan Province ; Yunnan Province Scientist Workshop of Solar Physics ; Applied Basic Research of Yunnan Province[2019FB005] ; China Scholarship CouncilChina Scholarship Council[201904910573] ; NSFNational Science Foundation (NSF)[AGS-AGS1723313] ; NSFNational Science Foundation (NSF)[AST-1735525] ; Natural Science Foundation of Henan Province[212300410210] ; NASANational Aeronautics & Space Administration (NASA)[80NSSC18K0732] |
| 项目资助者 | Strategic Priority Research Programme of Chinese Academy of Sciences[XDA17040507, QYZDJ-SSWSLH012] ; Natural Science Fundation of ChinaNational Natural Science Foundation of China (NSFC)[11933009, 11973083, 12073073, U2031141] ; Yunling Scholar Project of the Yunnan Province ; Yunnan Province Scientist Workshop of Solar Physics ; Applied Basic Research of Yunnan Province[2019FB005] ; China Scholarship CouncilChina Scholarship Council[201904910573] ; NSFNational Science Foundation (NSF)[AGS-AGS1723313, AST-1735525] ; Natural Science Foundation of Henan Province[212300410210] ; NASANational Aeronautics & Space Administration (NASA)[80NSSC18K0732] |
| 语种 | 英语 |
| 学科领域 | 天文学 ; 太阳与太阳系 ; 太阳物理学 |
| 文章类型 | Article |
| 出版者 | OXFORD UNIV PRESS |
| 出版地 | GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND |
| ISSN | 0035-8711 |
| URL | 查看原文 |
| WOS记录号 | WOS:000767876100003 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | CORONAL MASS EJECTIONS ; MAGNETIC RECONNECTION ; PERIODIC OSCILLATIONS ; TRANSPORT SCHEME ; SOLAR-FLARE ; FLUX ROPE ; MODEL ; FEATURES ; ERUPTION ; SHOCK |
| EI入藏号 | 20215111353676 |
| EI主题词 | Magnetohydrodynamics |
| EI分类号 | 615.3 Magnetohydrodynamics (MHD) Power Generation - 631.1 Fluid Flow, General - 701.2 Magnetism: Basic Concepts and Phenomena - 932.3 Plasma Physics |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/24750 |
| 专题 | 太阳物理研究组 |
| 通讯作者 | Mei ZX(梅志星); Shen, Chengcai; Ye J(叶景); Lin J(林隽) |
| 作者单位 | 1.Yunnan Observatories, Chinese Academy of Sciences, PO Box 110, Kunming, Yunnan 650216, China; 2.Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA; 3.University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China; 4.Institute of Space Physics, Luoyang Normal University, Luoyang, Henan 471934, China; 5.Centre for Mathematical Plasma Astrophysics, Department of Mathematics, KU Leuven, Celestijnenlaan 200B, B-3001 Leuven, Belgium; 6.Division of Atmospheric and Geospace Sciences, National Science Foundation, 2415 Eisenhower Avenue, Alexandria, VA 22314, USA; 7.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Beijing 100012, 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 |
| 推荐引用方式 GB/T 7714 | Xie XY,Mei ZX,Shen, Chengcai,et al. Numerical experiments on dynamic evolution of a CME-flare current sheet[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,509(1):406-420. |
| APA | Xie XY.,Mei ZX.,Shen, Chengcai.,Cai, Qiangwei.,Ye J.,...&Lin J.(2021).Numerical experiments on dynamic evolution of a CME-flare current sheet.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,509(1),406-420. |
| MLA | Xie XY,et al."Numerical experiments on dynamic evolution of a CME-flare current sheet".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 509.1(2021):406-420. |
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| Numerical experiment（22319KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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