globalchange  > 气候减缓与适应
DOI: 10.1029/2018JA025245
Scopus ID: 2-s2.0-85050272931
Magnetospheric Multiscale Dayside Reconnection Electron Diffusion Region Events
Author: Webster J.M.; Burch J.L.; Reiff P.H.; Daou A.G.; Genestreti K.J.; Graham D.B.; Torbert R.B.; Ergun R.E.; Sazykin S.Y.; Marshall A.; Allen R.C.; Chen L.-J.; Wang S.; Phan T.D.; Giles B.L.; Moore T.E.; Fuselier S.A.; Cozzani G.; Russell C.T.; Eriksson S.; Rager A.C.; Broll J.M.; Goodrich K.; Wilder F.
Source Publication: Journal of Geophysical Research: Space Physics
ISSN: 21699380
Publishing Year: 2018
Volume: 123, Issue:6
pages begin: 4858
pages end: 4878
Language: 英语
Keyword: diffusion ; electron ; energization ; magnetopause ; MMS ; reconnection
English Abstract: We use high-resolution data from dayside passes of the Magnetospheric Multiscale (MMS) mission to create for the first time a comprehensive listing of encounters with the electron diffusion region (EDR), as evidenced by electron agyrotropy, ion jet reversals, and j • E′ > 0. We present an overview of these 32 EDR or near-EDR events, which demonstrate a wide variety of observed plasma behavior inside and surrounding the reconnection site. We analyze in detail three of the 21 new EDR encounters, which occurred within a 1-min-long interval on 23 November 2016. The three events, which resulted from a relatively low and oscillating magnetopause velocity, exhibited large electric fields (up to ~100 mV/m), crescent-shaped electron velocity phase space densities, large currents (≥2 μA/m2), and Ohmic heating of the plasma (~10 nW/m3). We include an Ohm's law analysis, in which we show that the divergence of the electron pressure term usually dominates the nonideal terms and is much more turbulent on the magnetosphere versus the magnetosheath side of the EDR. ©2018. The Authors.
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被引频次[WOS]:32   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Appears in Collections:气候减缓与适应

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Affiliation: Department of Physics and Astronomy, Rice University, Houston, TX, United States; Southwest Research Institute, San Antonio, TX, United States; Deceased 18 May 2018, United States; Space Research Institute, Austrian Academy of Sciences, Graz, Austria; Swedish Institute of Space Physics, Uppsala, Sweden; Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH, United States; Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, United States; The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States; Astronomy Department, University of Maryland, College Park, MD, United States; Space Sciences Laboratory, University of California, Berkeley, CA, United States; NASA Goddard Space Flight Center, Greenbelt, MD, United States; Space Science Department, University of Texas at San Antonio, San Antonio, TX, United States; Laboratory of Plasma Physics, Pierre and Marie Curie University, Paris, France; Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA, United States

Recommended Citation:
Webster J.M.,Burch J.L.,Reiff P.H.,et al. Magnetospheric Multiscale Dayside Reconnection Electron Diffusion Region Events[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(6)
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