Magnetospheric Multiscale Dayside Reconnection Electron Diffusion Region Events

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dc.citation.firstpage4858
dc.citation.journalTitleJournal of Geophysical Research: Space Physics
dc.citation.lastpage4878
dc.citation.volumeNumber123
dc.contributor.authorWebster, J.M.
dc.contributor.authorBurch, J.L.
dc.contributor.authorReiff, P.H.
dc.contributor.authorDaou, A.G.
dc.contributor.authorGenestreti, K.J.
dc.contributor.authorGraham, D.B.
dc.contributor.authorTorbert, R.B.
dc.contributor.authorErgun, R.E.
dc.contributor.authorSazykin, S.Y.
dc.contributor.authorMarshall, A.
dc.contributor.authorAllen, R.C.
dc.contributor.authorChen, L.-J.
dc.contributor.authorWang, S.
dc.contributor.authorPhan, T.D.
dc.contributor.authorGiles, B.L.
dc.contributor.authorMoore, T.E.
dc.contributor.authorFuselier, S.A.
dc.contributor.authorCozzani, G.
dc.contributor.authorRussell, C.T.
dc.contributor.authorEriksson, S.
dc.contributor.authorRager, A.C.
dc.contributor.authorBroll, J.M.
dc.contributor.authorGoodrich, K.
dc.contributor.authorWilder, F.
dc.date.accessioned2018-11-01T19:40:03Z
dc.date.available2018-11-01T19:40:03Z
dc.date.issued2018
dc.description.abstractWe 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.
dc.identifier.citationWebster, J.M., Burch, J.L., Reiff, P.H., et al.. "Magnetospheric Multiscale Dayside Reconnection Electron Diffusion Region Events." <i>Journal of Geophysical Research: Space Physics,</i> 123, (2018) Wiley: 4858-4878. https://doi.org/10.1029/2018JA025245.
dc.identifier.doihttps://doi.org/10.1029/2018JA025245
dc.identifier.urihttps://hdl.handle.net/1911/103280
dc.language.isoeng
dc.publisherWiley
dc.rightsThis is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleMagnetospheric Multiscale Dayside Reconnection Electron Diffusion Region Events
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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