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Title: Magnetic Reconnection in a Quasi-Parallel Shock: Two-Dimensional Local Particle-in-Cell Simulation

Abstract

Magnetic reconnection in a quasi-parallel bow shock is investigated with two-dimensional local particle-in-cell simulations. In the shock transition and downstream regions, large amplitude magnetic fluctuations exist, and abundant current sheets form. In some current sheets, reconnection occurs, and ion-scale and electron-scale magnetic islands are generated. In electron-scale island regions, only electron outflow jets are observed, producing a quadrupolar out-of-plane magnetic field pattern, while in ion-scale islands, both ions and electrons are involved and energized in reconnection. Finally, normalized reconnection rates are obtained to be between around 0.1 to 0.2, and particle acceleration signatures are seen in distribution functions.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [3]; ORCiD logo [2]
+ Show Author Affiliations
  1. Univ. of Maryland, College Park, MD (United States); NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  2. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
  3. Univ. of Bergen (Norway)
Publication Date:
Research Org.:
Univ. of Maryland, College Park, MD (United States)
Sponsoring Org.:
USDOE Office of Science (SC); National Science Foundation (NSF); National Aeronautics and Space Administration (NASA); Research Council of Norway
OSTI Identifier:
1612464
Alternate Identifier(s):
OSTI ID: 1558812
Grant/Contract Number:  
SC0016278; AGS-1619584; AGS-1552142; 80NSSC18K1369; 223252/F50
Resource Type:
Accepted Manuscript
Journal Name:
Geophysical Research Letters
Additional Journal Information:
Journal Volume: 46; Journal Issue: 16; Journal ID: ISSN 0094-8276
Publisher:
American Geophysical Union
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; geology; shock waves; magnetic reconnection; PIC simulation; Earth's bow shock; quasi-parallel shock; acceleration

Citation Formats

Bessho, N., Chen, L. ‐J., Wang, S., Hesse, M., and Wilson, L. B.. Magnetic Reconnection in a Quasi-Parallel Shock: Two-Dimensional Local Particle-in-Cell Simulation. United States: N. p., 2019. Web. doi:10.1029/2019gl083397.
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Bessho, N., Chen, L. ‐J., Wang, S., Hesse, M., & Wilson, L. B.. Magnetic Reconnection in a Quasi-Parallel Shock: Two-Dimensional Local Particle-in-Cell Simulation. United States. https://doi.org/10.1029/2019gl083397
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Bessho, N., Chen, L. ‐J., Wang, S., Hesse, M., and Wilson, L. B.. Mon . "Magnetic Reconnection in a Quasi-Parallel Shock: Two-Dimensional Local Particle-in-Cell Simulation". United States. https://doi.org/10.1029/2019gl083397. https://www.osti.gov/servlets/purl/1612464.
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@article{osti_1612464,
title = {Magnetic Reconnection in a Quasi-Parallel Shock: Two-Dimensional Local Particle-in-Cell Simulation},
author = {Bessho, N. and Chen, L. ‐J. and Wang, S. and Hesse, M. and Wilson, L. B.},
abstractNote = {Magnetic reconnection in a quasi-parallel bow shock is investigated with two-dimensional local particle-in-cell simulations. In the shock transition and downstream regions, large amplitude magnetic fluctuations exist, and abundant current sheets form. In some current sheets, reconnection occurs, and ion-scale and electron-scale magnetic islands are generated. In electron-scale island regions, only electron outflow jets are observed, producing a quadrupolar out-of-plane magnetic field pattern, while in ion-scale islands, both ions and electrons are involved and energized in reconnection. Finally, normalized reconnection rates are obtained to be between around 0.1 to 0.2, and particle acceleration signatures are seen in distribution functions.},
doi = {10.1029/2019gl083397},
journal = {Geophysical Research Letters},
number = 16,
volume = 46,
place = {United States},
year = {2019},
month = {7}
}
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Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1029/2019gl083397
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Citation Metrics:
Cited by: 23 works
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Figures / Tables:

Figure 1 Figure 1: (a) Magnetic field By profiles at y= 25.6di. (b–d) Magnetic field lines in x‐y. (e–j) Field quantities at Ωit= 18.75. (e) Electric field Ex. (f) Current density Jz. (g) Magnetic field Bz. (h) Electron density ne. (i, j) Electron fluid velocities Vex and Vey. Black curves denote magneticmore » field lines. X letters denote X‐line positions.« less
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Works referenced in this record:

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    Works referencing / citing this record:

    Influence of parallel shearing flow on the switch-off effect of magnetic reconnection
    journal, December 2019

    • Liu, Yang; Huang, Junfeng; Zhu, Tengfei
    • AIP Advances, Vol. 9, Issue 12
    • DOI: 10.1063/1.5119841
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