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| Titel |
Magnetic holes in plasmas close to the mirror instability |
| VerfasserIn |
D. Borgogno, T. Passot, P. L. Sulem |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 14, no. 4 ; Nr. 14, no. 4 (2007-07-09), S.373-383 |
| Datensatznummer |
250012237
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| Publikation (Nr.) |
 copernicus.org/npg-14-373-2007.pdf |
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| Zusammenfassung |
| Non-propagating magnetic hole solutions in anisotropic plasmas near
the mirror instability threshold are investigated in numerical
simulations of a fluid model that incorporates linear Landau damping
and finite Larmor radius corrections calculated in the gyrokinetic
approximation. This FLR-Landau fluid model reproduces
the subcritical mirror bifurcation recently identified on the
Vlasov-Maxwell system, both by theory and numerics.
Stable magnetic hole solutions that display a polarization
different from that of Hall-MHD solitons are indeed obtained slighlty
below threshold, while magnetic patterns and spatio-temporal chaos emerge when
the system is maintained in a mirror unstable regime. |
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