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| Titel |
Collisionless magnetic reconnection: analytical model and PIC simulation comparison |
| VerfasserIn |
V. Semenov, D. Korovinskiy, A. Divin, N. Erkaev, H. Biernat |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 27, no. 3 ; Nr. 27, no. 3 (2009-03-02), S.905-911 |
| Datensatznummer |
250016425
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| Publikation (Nr.) |
 copernicus.org/angeo-27-905-2009.pdf |
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| Zusammenfassung |
| Magnetic reconnection is believed to be responsible for
various explosive processes in the space plasma including
magnetospheric substorms. The Hall effect is proved to play a key
role in the reconnection process. An analytical model of
steady-state magnetic reconnection in a collisionless
incompressible plasma is developed using the electron Hall MHD
approximation. It is shown that the initial complicated system of
equations may split into a system of independent equations, and
the solution of the problem is based on the Grad-Shafranov
equation for the magnetic potential.
The results of the analytical study are further compared with a
two-dimensional particle-in-cell simulation of reconnection. It
is shown that both methods demonstrate a close agreement in the
electron current and the magnetic and electric field structures
obtained. The spatial scales of the acceleration region in the
simulation and the analytical study are of the same order. Such
features like particles trajectories and the in-plane electric
field structure appear essentially similar in both models. |
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