DOI: 10.1029/2018JA025604
Scopus记录号: 2-s2.0-85052370206
论文题名: Characterizing Ion Flows Across a Magnetotail Dipolarization Jet
作者: Arnold H. ; Swisdak M. ; Drake J.F.
刊名: Journal of Geophysical Research: Space Physics
ISSN: 21699380
出版年: 2018
卷: 123, 期: 8 起始页码: 6326
结束页码: 6334
语种: 英语
英文关键词: dipolarization jet
; Hall field
; ion outflows
; magnetic reconnection
; magnetotail
英文摘要: The structure of dipolarization jets with finite width in the dawn-dusk direction relevant to magnetic reconnection in the Earth's magnetotail is explored with particle-in-cell simulations. We carry out Riemann simulations of the evolution of the jet in the dawn-dusk, north-south plane to investigate the dependence of the jet structure on the jet width in the dawn-dusk direction. We find that the magnetic field and Earth-directed ion flow structure depend on the dawn-dusk width. A reversal in the usual Hall magnetic field near the center of the current sheet on the duskside of larger jets is observed. For small widths, the maximum velocity of the earthward flow is significantly reduced below the theoretical limit of the upstream Alfvén speed. However, the ion flow speed approaches this limit once the width exceeds the ion Larmor radius based on the normal magnetic field, Bz. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113449
Appears in Collections: 气候减缓与适应
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作者单位: IREAP, University of Maryland, College Park, MD, United States
Recommended Citation:
Arnold H.,Swisdak M.,Drake J.F.. Characterizing Ion Flows Across a Magnetotail Dipolarization Jet[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(8)