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DOI: 10.1002/2015GL065004
论文题名:
Magnetic reconnection in the near-Mars magnetotail: MAVEN observations
作者: Harada Y.; Halekas J.S.; McFadden J.P.; Mitchell D.L.; Mazelle C.; Connerney J.E.P.; Espley J.; Larson D.E.; Brain D.A.; Andersson L.; DiBraccio G.A.; Collinson G.A.; Livi R.; Hara T.; Ruhunusiri S.; Jakosky B.M.
刊名: Geophysical Research Letters
ISSN: 0094-8464
EISSN: 1944-8195
出版年: 2015
卷: 42, 期:21
起始页码: 8838
结束页码: 8845
语种: 英语
英文关键词: counterstreaming ions ; Hall magnetic fields ; heavy ions ; magnetic reconnection ; Mars ; MAVEN
Scopus关键词: Distribution functions ; Heavy ions ; Magnetic fields ; Hall magnetic field ; Kinetic simulation ; Magnetic field topology ; Magnetic reconnections ; Mars ; MAVEN ; Trapped electrons ; Volatile evolution ; Magnetism ; countercurrent ; current ring ; electromagnetic field ; electron ; magnetotail ; Mars ; Martian atmosphere ; observational method ; outflow ; topology ; velocity profile
英文摘要: We report Mars Atmosphere and Volatile EvolutioN (MAVEN) observations of electrons, ions, and magnetic fields which provide comprehensive demonstration of magnetic reconnection signatures in the Martian magnetotail. In the near-Mars tail current sheet at XMSO∼-1.3RM, trapped electrons with two-sided loss cones were observed, indicating the closed magnetic field topology. In the closed field region, MAVEN observed Hall magnetic field signatures and Marsward bulk flows of H+, O+, and O2+ ions, which suggest the presence of X lines tailward from the spacecraft. Velocity distribution functions of the reconnection outflow ions exhibit counterstreaming beams separated along the current sheet normal, and their bulk velocities in the outflow direction inversely depend on ion mass. These characteristics are in qualitative agreement with previous multispecies kinetic simulations. The near-Mars magnetotail provides a unique environment for studying multi-ion reconnection. © 2015. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955182051&doi=10.1002%2f2015GL065004&partnerID=40&md5=ddbd4ef78fe61698c5aaebd4417e4d82
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8080
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Space Sciences Laboratory, University of California, Berkeley, CA, United States

Recommended Citation:
Harada Y.,Halekas J.S.,McFadden J.P.,et al. Magnetic reconnection in the near-Mars magnetotail: MAVEN observations[J]. Geophysical Research Letters,2015-01-01,42(21).
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