Numerical experiments on dynamic evolution of a CME-flare current sheet

doi:10.1093/mnras/stab2954

	Numerical experiments on dynamic evolution of a CME-flare current sheet
	Xie XY(谢小妍)1,6,7; Mei ZX(梅志星)7; Shen, Chengcai 1; Cai, Qiangwei 5; Ye J(叶景)7; Reeves, Katharine K 1; Roussev, Ilia I 2,4; Lin J(林隽)3,6,7
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2021-11-09
卷号	509 期号:1 页码:406-420
关键词	Sun: Flares MHD Magnetic reconnection Sun:coronal mass ejections (CMEs) Instabilities Plasmas
ISSN号	0035-8711
DOI	10.1093/mnras/stab2954
产权排序	第1完成单位
文献子类	Article
英文摘要	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.
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	GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
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]
WOS关键词	CORONAL MASS EJECTIONS ; MAGNETIC RECONNECTION ; PERIODIC OSCILLATIONS ; TRANSPORT SCHEME ; SOLAR-FLARE ; FLUX ROPE ; MODEL ; FEATURES ; ERUPTION ; SHOCK
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000767876100003
资助机构	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]
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/24750]
专题	云南天文台_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.Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA; 2.Division of Atmospheric and Geospace Sciences, National Science Foundation, 2415 Eisenhower Avenue, Alexandria, VA 22314, USA; 3.Center for Astronomical Mega-Science, Chinese Academy of Sciences, 20A Datun Road, Beijing 100012, China 4.Centre for Mathematical Plasma Astrophysics, Department of Mathematics, KU Leuven, Celestijnenlaan 200B, B-3001 Leuven, Belgium; 5.Institute of Space Physics, Luoyang Normal University, Luoyang, Henan 471934, China; 6.University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China; 7.Yunnan Observatories, Chinese Academy of Sciences, PO Box 110, Kunming, Yunnan 650216, China;
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.