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Structures of Hall Fields in Asymmetric Magnetic Reconnection
Dai, Lei
作者部门空间科学部
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2018
卷号123期号:9页码:7332-7341
DOI10.1029/2018JA025251
ISSN2169-9380
语种英语
关键词Hall magnetic fields kinetic Alfven waves magnetic reconnection asymmetric reconnection
摘要Unlike a quadrupolar Hall magnetic field in symmetric magnetic reconnection, a bipolar or quadrupolar Hall magnetic field occurs in asymmetric reconnection as indicated by recent observations from the Magnetospheric Multiscale (MMS) mission. Here we present analytic calculations of the structures of Hall magnetic fields in asymmetric reconnection. The Hall magnetic fields are analyzed in terms of kinetic Alfven wave eigenmodes of the reconnection layer. The bipolar and quadrupolar patterns of Hall magnetic fields correspond to a dominance of the n = 0 and n = 1 kinetic Alfven wave eigenmode, respectively. The asymmetry of Hall fields is linked to the asymmetry of the Alfve speed profile. The Hall magnetic fields are shifted toward and enhanced on the low Alfven speed side of the reconnection layer. The asymmetry in the magnetic field strength of the reconnection layer has a major effect on the structures of Hall magnetic fields.
收录类别SCI
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.nssc.ac.cn/handle/122/6570
专题空间科学部
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Dai, Lei. Structures of Hall Fields in Asymmetric Magnetic Reconnection[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2018,123(9):7332-7341.
APA Dai, Lei.(2018).Structures of Hall Fields in Asymmetric Magnetic Reconnection.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,123(9),7332-7341.
MLA Dai, Lei."Structures of Hall Fields in Asymmetric Magnetic Reconnection".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 123.9(2018):7332-7341.
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