%0 Journal Article
%T Magnetic holes in plasmas close to the mirror instability
%A D. Borgogno
%A T. Passot
%A P. L. Sulem
%J Nonlinear Processes in Geophysics (NPG)
%D 2007
%I Copernicus Publications
%X 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.
%U http://www.nonlin-processes-geophys.net/14/373/2007/npg-14-373-2007.html