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DOI: 10.1002/2016GL068613
论文题名:
Electron currents and heating in the ion diffusion region of asymmetric reconnection
作者: Graham D.B.; Khotyaintsev Y.V.; Norgren C.; Vaivads A.; André M.; Lindqvist P.-A.; Marklund G.T.; Ergun R.E.; Paterson W.R.; Gershman D.J.; Giles B.L.; Pollock C.J.; Dorelli J.C.; Avanov L.A.; Lavraud B.; Saito Y.; Magnes W.; Russell C.T.; Strangeway R.J.; Torbert R.B.; Burch J.L.
刊名: Geophysical Research Letters
ISSN: 0094-9588
EISSN: 1944-9319
出版年: 2016
卷: 43, 期:10
起始页码: 4691
结束页码: 4700
语种: 英语
英文关键词: electron currents ; electron heating ; magnetic reconnection
Scopus关键词: Diffusion ; Electric fields ; Heating ; Ions ; Magnetism ; Magnetosphere ; Plasma heating ; Dc electric field ; Electron currents ; Electron heating ; Hall electric field ; Magnetic reconnections ; Magnetospheric multi scale ; Parallel electric fields ; Wave-particle interactions ; Electrons ; diffusion ; electric field ; electron ; heating ; ion ; magnetic field ; magnetopause ; spacecraft
英文摘要: In this letter the structure of the ion diffusion region of magnetic reconnection at Earth's magnetopause is investigated using the Magnetospheric Multiscale (MMS) spacecraft. The ion diffusion region is characterized by a strong DC electric field, approximately equal to the Hall electric field, intense currents, and electron heating parallel to the background magnetic field. Current structures well below ion spatial scales are resolved, and the electron motion associated with lower hybrid drift waves is shown to contribute significantly to the total current density. The electron heating is shown to be consistent with large-scale parallel electric fields trapping and accelerating electrons, rather than wave-particle interactions. These results show that sub-ion scale processes occur in the ion diffusion region and are important for understanding electron heating and acceleration. ©2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84969961409&doi=10.1002%2f2016GL068613&partnerID=40&md5=e6897264263ad0b60bd22a46176735a2
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10551
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: Swedish Institute of Space Physics, Uppsala, Sweden

Recommended Citation:
Graham D.B.,Khotyaintsev Y.V.,Norgren C.,et al. Electron currents and heating in the ion diffusion region of asymmetric reconnection[J]. Geophysical Research Letters,2016-01-01,43(10).
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