Curvature-driven drift mirror instability in the magnetosphere

Details Curvature-driven drift mirror instability in the magnetosphere Curvature-driven drift mirror instability in the magnetosphere

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988p%26ss...36..383w&link_type=abstract

Planetary and Space Science (ISSN 0032-0633), vol. 36, April 1988, p. 383-393. Research supported by Max-Planck-Gesellschaft zur

Computer Science

27

Magnetic Storms, Magnetospheric Instability, Plasma Drift, Plasma Interactions, Landau Damping, Magnetohydrodynamic Waves

Scientific paper

The resonant interaction between low frequency waves and magnetospheric plasma particles is examined for the case where the field-aligned phase velocity is much less than the Alfven velocity. The coupling of compressional Alfven and drift mirror modes is obtained by including the field curvature effect. The field curvature is also responsible for a new instability of the coupled mode similar to the drift mirror (DM) instability. However, this instability starts for a lower value of the anisotropy than in the case of the DM instability. The theoretical predictions are compared in detail with the storm-time Pc5 event of November 14, 15, 1979.

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