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Title: MMS observations of large guide field symmetric reconnection between colliding reconnection jets at the center of a magnetic flux rope at the magnetopause
Authors: M. Øieroset
T. D. Phan
C. Haggerty
M. A. Shay
J. P. Eastwood
D. J. Gershman
J. F. Drake
M. Fujimoto
R. E. Ergun
F. S. Mozer
M. Oka
R. B. Torbert
J. L. Burch
S. Wang
L. J. Chen
M. Swisdak
C. Pollock
J. C. Dorelli
S. A. Fuselier
B. Lavraud
B. L. Giles
T. E. Moore
Y. Saito
L. A. Avanov
W. Paterson
R. J. Strangeway
C. T. Russell
Y. Khotyaintsev
P. A. Lindqvist
K. Malakit
Space Sciences Laboratory at UC Berkeley
University of Delaware
Imperial College London
NASA Goddard Space Flight Center
University of Maryland
Japan Aerospace Exploration Agency
University of Colorado at Boulder
University System of New Hampshire
Southwest Research Institute
Denali Scientific
University of Texas at San Antonio
Universite de Toulouse
CNRS Centre National de la Recherche Scientifique
University of California, Los Angeles
Instiutet för rymdfysik
The Royal Institute of Technology (KTH)
Mahidol University
Keywords: Earth and Planetary Sciences
Issue Date: 16-Jun-2016
Citation: Geophysical Research Letters. Vol.43, No.11 (2016), 5536-5544
Abstract: ©2016. American Geophysical Union. All Rights Reserved. We report evidence for reconnection between colliding reconnection jets in a compressed current sheet at the center of a magnetic flux rope at Earth's magnetopause. The reconnection involved nearly symmetric inflow boundary conditions with a strong guide field of two. The thin (2.5 ion-skin depth (di) width) current sheet (at ~12 di downstream of the X line) was well resolved by MMS, which revealed large asymmetries in plasma and field structures in the exhaust. Ion perpendicular heating, electron parallel heating, and density compression occurred on one side of the exhaust, while ion parallel heating and density depression were shifted to the other side. The normal electric field and double out-of-plane (bifurcated) currents spanned almost the entire exhaust. These observations are in good agreement with a kinetic simulation for similar boundary conditions, demonstrating in new detail that the structure of large guide field symmetric reconnection is distinctly different from antiparallel reconnection.
ISSN: 19448007
Appears in Collections:Scopus 2016-2017

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