气候变化领域集成服务门户(CCPortal): Lower-Hybrid-Drift Vortices in the Electron-Scale Magnetic Reconnection Layer

CCPortal

DOI	10.1029/2020GL090726
	Lower-Hybrid-Drift Vortices in the Electron-Scale Magnetic Reconnection Layer
	Ng J.; Chen L.-J.; Le A.; Stanier A.; Wang S.; Bessho N.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:22
英文摘要	Lower-hybrid-drift waves driving vortical flows have recently been discovered in the electron current layer during magnetic reconnection in the terrestrial magnetotail. Yet, spacecraft measurements cannot address how pervasive the waves are. We perform three-dimensional particle-in-cell simulations of guide field reconnection to demonstrate that electron vortices driven by the lower-hybrid-drift instability (LHDI) are excited immediately downstream from the electron jet reversal in 3-D channels of enhanced electron outflow. The resulting fluctuations generate a series of alternating vortices, producing magnetic field perturbations opposing and enhancing the local guide field and causing kinking of the enhanced electron outflow and patches of increased current. Our results demonstrate for the first time that LHDI exists in the electron current layer and enhanced outflow channels, providing a conceptual breakthrough on the LHDI in reconnection. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Electrons; Magnetism; Electron currents; Electron vortex; Lower-hybrid drift instabilities; Magnetic field perturbations; Magnetic reconnections; Outflow channel; Three dimensional particle-in-cell simulations; Vortical flows; Vortex flow; conceptual framework; electromagnetic field; electron; magnetic field; outflow; spacecraft; three-dimensional modeling
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169461
作者单位	Department of Astronomy, University of Maryland, College Park, MD, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Los Alamos National Laboratory, Los Alamos, NM, United States
推荐引用方式 GB/T 7714	Ng J.,Chen L.-J.,Le A.,et al. Lower-Hybrid-Drift Vortices in the Electron-Scale Magnetic Reconnection Layer[J],2020,47(22).
APA	Ng J.,Chen L.-J.,Le A.,Stanier A.,Wang S.,&Bessho N..(2020).Lower-Hybrid-Drift Vortices in the Electron-Scale Magnetic Reconnection Layer.Geophysical Research Letters,47(22).
MLA	Ng J.,et al."Lower-Hybrid-Drift Vortices in the Electron-Scale Magnetic Reconnection Layer".Geophysical Research Letters 47.22(2020).