气候变化领域集成服务门户(CCPortal): Observations of Electron-Only Magnetic Reconnection Associated With Macroscopic Magnetic Flux Ropes

CCPortal

DOI	10.1029/2020GL089659
	Observations of Electron-Only Magnetic Reconnection Associated With Macroscopic Magnetic Flux Ropes
	Man H.Y.; Zhou M.; Yi Y.Y.; Zhong Z.H.; Tian A.M.; Deng X.H.; Khotyaintsev Y.; Russell C.T.; Giles B.L.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:19
英文摘要	We report a Magnetospheric Multiscale (MMS) mission observation of magnetic reconnection occurring at the edge of a large-scale magnetic flux rope (MFR), the cross-section of which was about 2 RE. The MFR was observed at the duskside in the Earth's magnetotail and was highly oblique with its axis approximately along the XGSM direction. We find an electron-scale current sheet near the edge of this MFR. The Hall magnetic and electric field, super-Alfvénic electron outflow, parallel electric field, and positive energy dissipation were observed associated with the current sheet, which indicates that MMS detected a reconnecting current sheet with a large guide field. Interestingly, ions were not coupled in this reconnection, akin to the electron-only reconnection observed in the turbulent magnetosheath. We further find that the electron-only reconnection is commonly associated with a macroscopic MFR. This result will shed new light on understanding the multiscale coupling associated with an MFR in space plasmas. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Electric fields; Energy dissipation; Magnetic flux; Magnetoplasma; Magnetosphere; Rope; Earth's magnetotail; Magnetic and electric fields; Magnetic flux ropes; Magnetic reconnections; Magnetospheric multiscale missions; Multiscale coupling; Parallel electric fields; Reconnecting current sheets; Electrons; coupling; electromagnetic field; electron; energy dissipation; geomagnetic field; magnetic survey; magnetotail
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/169650
作者单位	School of Resources Environmental and Chemical Engineering, Nanchang University, Nanchang, China; Institute of Space Science and Technology, Nanchang University, Nanchang, China; Department of Physics, School of Science, Nanchang University, Nanchang, China; Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Sciences, Shandong University, Weihai, China; Swedish Institute of Space Physics, Uppsala, Sweden; Department of Earth, Planetary and Space Sciences, University of California, Los Angeles, CA, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States
推荐引用方式 GB/T 7714	Man H.Y.,Zhou M.,Yi Y.Y.,et al. Observations of Electron-Only Magnetic Reconnection Associated With Macroscopic Magnetic Flux Ropes[J],2020,47(19).
APA	Man H.Y..,Zhou M..,Yi Y.Y..,Zhong Z.H..,Tian A.M..,...&Giles B.L..(2020).Observations of Electron-Only Magnetic Reconnection Associated With Macroscopic Magnetic Flux Ropes.Geophysical Research Letters,47(19).
MLA	Man H.Y.,et al."Observations of Electron-Only Magnetic Reconnection Associated With Macroscopic Magnetic Flux Ropes".Geophysical Research Letters 47.19(2020).