Magnetospheric interchange instability in anisotropic plasma

Details Magnetospheric interchange instability in anisotropic plasma Magnetospheric interchange instability in anisotropic plasma

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993p%26ss...41..245f&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 41, no. 3, p. 245-255.

Computer Science

3

Anisotropic Fluids, Jupiter Atmosphere, Magnetohydrodynamic Stability, Planetary Magnetospheres, Plasma Pressure, Magnetic Field Configurations, Magnetohydrodynamic Flow, Particle Energy

Scientific paper

The present analysis of magnetospheric interchange instability, under the assumption of anisotropic plasma-pressure distribution, employs a small-perturbation approach and takes into account not only the curved magnetic field but such external forces as gravity. A consequence of fast interchange motions in a coronation-dominated magnetosphere is that the rapid motions will be accompanied by the motion of ionized material away from the equatorial plane as the material moves outward, and vice versa. The results obtained imply that, the lower the energy of a plasma, the less likely it is to remain equatorially confined during outward interchange motion, irrespective of whether the process is diffusive or steady.

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