globalchange  > 气候减缓与适应
DOI: 10.1029/2018JA025529
Scopus ID: 2-s2.0-85052645647
Title:
The Role of the Parallel Electric Field in Electron-Scale Dissipation at Reconnecting Currents in the Magnetosheath
Author: Wilder F.D.; Ergun R.E.; Burch J.L.; Ahmadi N.; Eriksson S.; Phan T.D.; Goodrich K.A.; Shuster J.; Rager A.C.; Torbert R.B.; Giles B.L.; Strangeway R.J.; Plaschke F.; Magnes W.; Lindqvist P.A.; Khotyaintsev Y.V.
Source Publication: Journal of Geophysical Research: Space Physics
ISSN: 21699380
Publishing Year: 2018
Volume: 123, Issue:8
pages begin: 6533
pages end: 6547
Language: 英语
Keyword: current sheets ; diffusion region ; electric fields ; magnetosheath ; reconnection
English Abstract: We report observations from the Magnetospheric Multiscale satellites of reconnecting current sheets in the magnetosheath over a range of out-of-plane “guide” magnetic field strengths. The currents exhibit nonideal energy conversion in the electron frame of reference, and the events are within the ion diffusion region within close proximity (a few electron skin depths) to the electron diffusion region. The study focuses on energy conversion on the electron scale only. At low guide field (antiparallel reconnection), electric fields and currents perpendicular to the magnetic field dominate the energy conversion. Additionally, electron distributions exhibit significant nongyrotropy. As the guide field increases, the electric field parallel to the background magnetic field becomes increasingly strong, and the electron nongyrotropy becomes less apparent. We find that even with a guide field less than half the reconnecting field, the parallel electric field and currents dominate the dissipation. This suggests that parallel electric fields are more important to energy conversion in reconnection than previously thought and that at high guide field, the physics governing magnetic reconnection are significantly different from antiparallel reconnection. ©2018. American Geophysical Union. All Rights Reserved.
Citation statistics:
被引频次[WOS]:11   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/113435
Appears in Collections:气候减缓与适应

Files in This Item:

There are no files associated with this item.


Affiliation: Laboratory of Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, United States; Department of Astrophysical and Planetary Sciences, University of Colorado Boulder, Boulder, CO, United States; Southwest Research Institute, San Antonio, TX, United States; Space Sciences Laboratory, University of California, Berkeley, CA, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; University of Maryland, College Park, MD, United States; Department of Physics, Catholic University of America, Washington, DC, United States; Department of Physics, University of New Hampshire, Durham, NH, United States; Department of Earth, Planetary and Space Sciences, University of California, Los Angeles, CA, United States; Space Research Institute, Austrian Academy of Sciences, Graz, Austria; Royal Institute of Technology, Stockholm, Sweden; Swedish Institute of Space Physics, Uppsala, Sweden

Recommended Citation:
Wilder F.D.,Ergun R.E.,Burch J.L.,et al. The Role of the Parallel Electric Field in Electron-Scale Dissipation at Reconnecting Currents in the Magnetosheath[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(8)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Wilder F.D.]'s Articles
[Ergun R.E.]'s Articles
[Burch J.L.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Wilder F.D.]'s Articles
[Ergun R.E.]'s Articles
[Burch J.L.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Wilder F.D.]‘s Articles
[Ergun R.E.]‘s Articles
[Burch J.L.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.