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Title: Enhanced electron mixing and heating in 3-D asymmetric reconnection at the Earth's magnetopause

Here, electron heating and mixing during asymmetric reconnection are studied with a 3-D kinetic simulation that matches plasma parameters from Magnetospheric Multiscale (MMS) spacecraft observations of a magnetopause diffusion region. The mixing and heating are strongly enhanced across the magnetospheric separatrix compared to a 2-D simulation. The transport of particles across the separatrix in 3-D is attributed to lower hybrid drift turbulence excited at the steep density gradient near the magnetopause. In the 3-D simulation (and not the 2-D simulation), the electron temperature parallel to the magnetic field within the mixing layer is significantly higher than its upstream value in agreement with the MMS observations.
Authors:
ORCiD logo [1] ; ORCiD logo [1] ; ORCiD logo [2] ;  [3]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Univ. of Maryland, College Park, MD (United States); NASA Goddard Space Flight Center, Greenbelt, MD (United States)
  3. Univ. of Wisconsin, Madison, WI (United States)
Publication Date:
Report Number(s):
LA-UR-17-27740
Journal ID: ISSN 0094-8276; TRN: US1702888
Grant/Contract Number:
AC52-06NA25396; SC0016278
Type:
Accepted Manuscript
Journal Name:
Geophysical Research Letters
Additional Journal Information:
Journal Volume: 44; Journal Issue: 5; Journal ID: ISSN 0094-8276
Publisher:
American Geophysical Union
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Laboratory Directed Research and Development (LDRD) Program
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; Heliospheric and Magnetospheric Physics; magnetic reconnection; magnetopause; magnetosphere
OSTI Identifier:
1402651
Alternate Identifier(s):
OSTI ID: 1402345

Le, Ari Yitzchak, Daughton, William Scott, Chen, Li -Jen, and Egedal, Jan. Enhanced electron mixing and heating in 3-D asymmetric reconnection at the Earth's magnetopause. United States: N. p., Web. doi:10.1002/2017GL072522.
Le, Ari Yitzchak, Daughton, William Scott, Chen, Li -Jen, & Egedal, Jan. Enhanced electron mixing and heating in 3-D asymmetric reconnection at the Earth's magnetopause. United States. doi:10.1002/2017GL072522.
Le, Ari Yitzchak, Daughton, William Scott, Chen, Li -Jen, and Egedal, Jan. 2017. "Enhanced electron mixing and heating in 3-D asymmetric reconnection at the Earth's magnetopause". United States. doi:10.1002/2017GL072522. https://www.osti.gov/servlets/purl/1402651.
@article{osti_1402651,
title = {Enhanced electron mixing and heating in 3-D asymmetric reconnection at the Earth's magnetopause},
author = {Le, Ari Yitzchak and Daughton, William Scott and Chen, Li -Jen and Egedal, Jan},
abstractNote = {Here, electron heating and mixing during asymmetric reconnection are studied with a 3-D kinetic simulation that matches plasma parameters from Magnetospheric Multiscale (MMS) spacecraft observations of a magnetopause diffusion region. The mixing and heating are strongly enhanced across the magnetospheric separatrix compared to a 2-D simulation. The transport of particles across the separatrix in 3-D is attributed to lower hybrid drift turbulence excited at the steep density gradient near the magnetopause. In the 3-D simulation (and not the 2-D simulation), the electron temperature parallel to the magnetic field within the mixing layer is significantly higher than its upstream value in agreement with the MMS observations.},
doi = {10.1002/2017GL072522},
journal = {Geophysical Research Letters},
number = 5,
volume = 44,
place = {United States},
year = {2017},
month = {3}
}