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 oc...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-08-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2019GL083397 |
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| author | N. Bessho L.‐J. Chen S. Wang M. Hesse L. B. Wilson III |
| author_facet | N. Bessho L.‐J. Chen S. Wang M. Hesse L. B. Wilson III |
| author_sort | N. Bessho |
| collection | DOAJ |
| description | 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. Normalized reconnection rates are obtained to be between around 0.1 to 0.2, and particle acceleration signatures are seen in distribution functions. |
| format | Article |
| id | doaj-art-d941d305d4df45d990b1d7c2f1e6c317 |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2019-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-d941d305d4df45d990b1d7c2f1e6c3172025-08-20T02:12:20ZengWileyGeophysical Research Letters0094-82761944-80072019-08-0146169352936110.1029/2019GL083397Magnetic Reconnection in a Quasi‐Parallel Shock: Two‐Dimensional Local Particle‐in‐Cell SimulationN. Bessho0L.‐J. Chen1S. Wang2M. Hesse3L. B. Wilson III4Department of Astronomy University of Maryland College Park MD USAHeliophysics Science Division NASA Goddard Space Flight Center Greenbelt MD USADepartment of Astronomy University of Maryland College Park MD USABirkeland Centre for Space Science University of Bergen Bergen NorwayHeliophysics Science Division NASA Goddard Space Flight Center Greenbelt MD USAAbstract 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. Normalized reconnection rates are obtained to be between around 0.1 to 0.2, and particle acceleration signatures are seen in distribution functions.https://doi.org/10.1029/2019GL083397shock wavesmagnetic reconnectionPIC simulationEarth's bow shockquasi‐parallel shockacceleration |
| spellingShingle | N. Bessho L.‐J. Chen S. Wang M. Hesse L. B. Wilson III Magnetic Reconnection in a Quasi‐Parallel Shock: Two‐Dimensional Local Particle‐in‐Cell Simulation Geophysical Research Letters shock waves magnetic reconnection PIC simulation Earth's bow shock quasi‐parallel shock acceleration |
| title | Magnetic Reconnection in a Quasi‐Parallel Shock: Two‐Dimensional Local Particle‐in‐Cell Simulation |
| title_full | Magnetic Reconnection in a Quasi‐Parallel Shock: Two‐Dimensional Local Particle‐in‐Cell Simulation |
| title_fullStr | Magnetic Reconnection in a Quasi‐Parallel Shock: Two‐Dimensional Local Particle‐in‐Cell Simulation |
| title_full_unstemmed | Magnetic Reconnection in a Quasi‐Parallel Shock: Two‐Dimensional Local Particle‐in‐Cell Simulation |
| title_short | Magnetic Reconnection in a Quasi‐Parallel Shock: Two‐Dimensional Local Particle‐in‐Cell Simulation |
| title_sort | magnetic reconnection in a quasi parallel shock two dimensional local particle in cell simulation |
| topic | shock waves magnetic reconnection PIC simulation Earth's bow shock quasi‐parallel shock acceleration |
| url | https://doi.org/10.1029/2019GL083397 |
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