Towards understanding magnetic holes: Hybrid simulations

Details Towards understanding magnetic holes: Hybrid simulations Towards understanding magnetic holes: Hybrid simulations

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30nssc4b&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 14, pp. SSC 4-1, CiteID 1761, DOI 10.1029/2003GL017373

Physics

Plasma Physics

22

Space Plasma Physics: Numerical Simulation Studies, Space Plasma Physics: Kinetic And Mhd Theory, Interplanetary Physics: Interplanetary Magnetic Fields, Interplanetary Physics: Solar Wind Plasma, Magnetospheric Physics: Magnetosheath

Scientific paper

One-dimensional hybrid code simulations are presented which show that magnetic field depletions of variable length and depht can be maintained over long time in mirror-stable high-β plasmas under certain conditions while magnetic compressions cannot. This suggests that short-scale magnetic holes (MHs), frequently observed in space plasmas, may be a feature of an essentially isotropic rather than a mirror-unstable plasma. This suggestion is supported by additional simulations in anisotropic plasmas which reveal that localized magnetic depressions are not a typical feature of saturated states of the mirror instability.

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