Magnetic holes in plasmas close to the mirror instability
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 fl...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2007-07-01
|
| Series: | Nonlinear Processes in Geophysics |
| Online Access: | http://www.nonlin-processes-geophys.net/14/373/2007/npg-14-373-2007.pdf |
| id |
doaj-de40283ca48346eab598013f4e06125b |
|---|---|
| record_format |
Article |
| spelling |
doaj-de40283ca48346eab598013f4e06125b2020-11-24T23:54:07ZengCopernicus PublicationsNonlinear Processes in Geophysics1023-58091607-79462007-07-01144373383Magnetic holes in plasmas close to the mirror instabilityD. BorgognoT. PassotP. L. SulemNon-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. http://www.nonlin-processes-geophys.net/14/373/2007/npg-14-373-2007.pdf |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
D. Borgogno T. Passot P. L. Sulem |
| spellingShingle |
D. Borgogno T. Passot P. L. Sulem Magnetic holes in plasmas close to the mirror instability Nonlinear Processes in Geophysics |
| author_facet |
D. Borgogno T. Passot P. L. Sulem |
| author_sort |
D. Borgogno |
| title |
Magnetic holes in plasmas close to the mirror instability |
| title_short |
Magnetic holes in plasmas close to the mirror instability |
| title_full |
Magnetic holes in plasmas close to the mirror instability |
| title_fullStr |
Magnetic holes in plasmas close to the mirror instability |
| title_full_unstemmed |
Magnetic holes in plasmas close to the mirror instability |
| title_sort |
magnetic holes in plasmas close to the mirror instability |
| publisher |
Copernicus Publications |
| series |
Nonlinear Processes in Geophysics |
| issn |
1023-5809 1607-7946 |
| publishDate |
2007-07-01 |
| description |
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. |
| url |
http://www.nonlin-processes-geophys.net/14/373/2007/npg-14-373-2007.pdf |
| work_keys_str_mv |
AT dborgogno magneticholesinplasmasclosetothemirrorinstability AT tpassot magneticholesinplasmasclosetothemirrorinstability AT plsulem magneticholesinplasmasclosetothemirrorinstability |
| _version_ |
1725467198674173952 |