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Title: Switch-off slow shock/rotational discontinuity structures in collisionless magnetic reconnection: What to look for in satellite observations: SWITCH-OFF STRUCTURES IN RECONNECTION

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.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [3]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [4];  [5]; ORCiD logo [1]
  1. Univ. of Leuven, Leuven (Belgium). Centre for Mathematical Plasma Astrophysics
  2. Univ. of Surrey, Guildford (United Kingdom). Dept. of Mathematics
  3. Imperial College, London (United Kingdom). Blackett Lab.
  4. Univ. of Colorado, Boulder, CO (United States). Dept. of Physics
  5. KTH Royal Inst. of Technology, Stockholm (Sweden). Dept. of Computational Science and Technologies
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1461521
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Geophysical Research Letters
Additional Journal Information:
Journal Volume: 44; Journal Issue: 8; Journal ID: ISSN 0094-8276
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES

Citation Formats

Innocenti, M. E., Cazzola, E., Mistry, R., Eastwood, J. P., Goldman, M. V., Newman, D. L., Markidis, S., and Lapenta, G. Switch-off slow shock/rotational discontinuity structures in collisionless magnetic reconnection: What to look for in satellite observations: SWITCH-OFF STRUCTURES IN RECONNECTION. United States: N. p., 2017. Web. doi:10.1002/2017GL073092.
Innocenti, M. E., Cazzola, E., Mistry, R., Eastwood, J. P., Goldman, M. V., Newman, D. L., Markidis, S., & Lapenta, G. Switch-off slow shock/rotational discontinuity structures in collisionless magnetic reconnection: What to look for in satellite observations: SWITCH-OFF STRUCTURES IN RECONNECTION. United States. doi:10.1002/2017GL073092.
Innocenti, M. E., Cazzola, E., Mistry, R., Eastwood, J. P., Goldman, M. V., Newman, D. L., Markidis, S., and Lapenta, G. Sat . "Switch-off slow shock/rotational discontinuity structures in collisionless magnetic reconnection: What to look for in satellite observations: SWITCH-OFF STRUCTURES IN RECONNECTION". United States. doi:10.1002/2017GL073092. https://www.osti.gov/servlets/purl/1461521.
@article{osti_1461521,
title = {Switch-off slow shock/rotational discontinuity structures in collisionless magnetic reconnection: What to look for in satellite observations: SWITCH-OFF STRUCTURES IN RECONNECTION},
author = {Innocenti, M. E. and Cazzola, E. and Mistry, R. and Eastwood, J. P. and Goldman, M. V. and Newman, D. L. and Markidis, S. and Lapenta, G.},
abstractNote = {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.},
doi = {10.1002/2017GL073092},
journal = {Geophysical Research Letters},
number = 8,
volume = 44,
place = {United States},
year = {2017},
month = {4}
}

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