Switch-off slow shock/rotational discontinuity structures in collisionless magnetic reconnection: What to look for in satellite observations

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Title: Switch-off slow shock/rotational discontinuity structures in collisionless magnetic reconnection: What to look for in satellite observations
Author(s): Innocenti, ME
Cazzola, E
Mistry, R
Eastwood, JP
Goldman, MV
Newman, DL
Markidis, S
Lapenta, G
Item Type: Journal Article
Abstract: In Innocenti et al. (2015) we have observed and characterized for the first time Petschek-like switch-off slow shock/rotational discontinuity (SO-SS/RD) compound structures in a 2-D fully kinetic simulation of collisionless magnetic reconnection. Observing these structures in the solar wind or in the magnetotail would corroborate the possibility that Petschek exhausts develop in collisionless media as a result of single X point collisionless reconnection. Here we highlight their signatures in simulations with the aim of easing their identification in observations. The most notable signatures include a four-peaked ion current profile in the out-of-plane direction, associated ion distribution functions, increased electron and ion anisotropy downstream the SS, and increased electron agyrotropy downstream the RDs.
Publication Date: 22-Apr-2017
Date of Acceptance: 16-Mar-2017
URI: http://hdl.handle.net/10044/1/48660
DOI: https://dx.doi.org/10.1002/2017GL073092
ISSN: 0094-8276
Publisher: American Geophysical Union
Start Page: 3447
End Page: 3455
Journal / Book Title: GEOPHYSICAL RESEARCH LETTERS
Volume: 44
Issue: 8
Copyright Statement: © 2017 American Geophysical Union. All Rights Reserved. An edited version of this paper was published by AGU. Innocenti, M. E., E. Cazzola, R. Mistry, J. P. Eastwood, M. V. Goldman, D. L. Newman, S. Markidis, and G. Lapenta (2017), Switch-off slow shock/rotational discontinuity structures in collisionless magnetic reconnection: What to look for in satellite observations, Geophys. Res. Lett., 44, 3447–3455, doi:10.1002/2017GL073092. To view the published open abstract, go to: https://dx.doi.org/10.1002/2017GL073092
Sponsor/Funder: Science and Technology Facilities Council (STFC)
Funder's Grant Number: ST/N000692/1
Keywords: Science & Technology
Physical Sciences
Geosciences, Multidisciplinary
Geology
MAGNETOTAIL RECONNECTION
PLASMA SHEET
SOLAR-WIND
GEOTAIL OBSERVATIONS
HYBRID SIMULATIONS
ION DYNAMICS
MODE SHOCKS
FIELD
WALEN
ACCELERATION
Meteorology & Atmospheric Sciences
MD Multidisciplinary
Publication Status: Published
Embargo Date: 2017-10-22
Appears in Collections:Space and Atmospheric Physics
Physics
Faculty of Natural Sciences



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