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:
-
[1];
[2];
[1];
[3];
[2]
- Univ. of Maryland, College Park, MD (United States); NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
- NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
- 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.
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
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.
@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 = {Mon Jul 29 00:00:00 EDT 2019},
month = {Mon Jul 29 00:00:00 EDT 2019}
}
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Figures / Tables:
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 »
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Works referencing / citing this record:
Evidence of Magnetic Nulls in the Reconnection at Bow Shock
journal, September 2019
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- Geophysical Research Letters, Vol. 46, Issue 17-18
Influence of parallel shearing flow on the switch-off effect of magnetic reconnection
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Figures / Tables found in this record:
Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.