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Numerical study of the reconnection process between magnetic cloud and heliospheric current sheet
Zhang, Man; Zhou, Yu Fen; Feng, Xue Shang; Lie, Bo; Xiong, Ming
作者部门空间科学部
发表期刊ASTRONOMY & ASTROPHYSICS
2018
卷号619页码:A82
DOI10.1051/0004-6361/201832951
ISSN1432-0746
语种英语
关键词Sun: Coronal Mass Ejections (Cmes) Sun: Heliosphere
摘要

In this paper, we have used a three-dimensional numerical magnetohydrodynamics model to study the reconnection process between magnetic cloud and heliospheric current sheet. Within a steady-state heliospheric model that gives a reasonable large-scale structure of the solar wind near solar minimum, we injected a spherical plasmoid to mimic a magnetic cloud. When the magnetic cloud moves to the heliospheric current sheet, the dynamic process causes the current sheet to become gradually thinner and the magnetic reconnection begin. The numerical simulation can reproduce the basic characteristics of the magnetic reconnection, such as the correlated/anticorrelated signatures in V and B passing a reconnection exhaust. Depending on the initial magnetic helicity of the cloud, magnetic reconnection occurs at points along the boundary of the two systems where antiparallel field lines are forced together. We find the magnetic filed and velocity in the MC have a effect on the reconnection rate, and the magnitude of velocity can also effect the beginning time of reconnection. These results are helpful in understanding and identifying the dynamic process occurring between the magnetic cloud and the heliospheric current sheet.

收录类别SCI ; EI
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文献类型期刊论文
条目标识符http://ir.nssc.ac.cn/handle/122/6564
专题空间科学部
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Zhang, Man,Zhou, Yu Fen,Feng, Xue Shang,et al. Numerical study of the reconnection process between magnetic cloud and heliospheric current sheet[J]. ASTRONOMY & ASTROPHYSICS,2018,619:A82.
APA Zhang, Man,Zhou, Yu Fen,Feng, Xue Shang,Lie, Bo,&Xiong, Ming.(2018).Numerical study of the reconnection process between magnetic cloud and heliospheric current sheet.ASTRONOMY & ASTROPHYSICS,619,A82.
MLA Zhang, Man,et al."Numerical study of the reconnection process between magnetic cloud and heliospheric current sheet".ASTRONOMY & ASTROPHYSICS 619(2018):A82.
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