Possible mechanism for the generation of low-frequency pulsations in the polar cusp

Details Possible mechanism for the generation of low-frequency pulsations in the polar cusp Possible mechanism for the generation of low-frequency pulsations in the polar cusp

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ge%26ae..17.1083k&link_type=abstract

Geomagnetizm i Aeronomiia, vol. 17, Nov.-Dec. 1977, p. 1083-1087. In Russian.

Computer Science

Electron Scattering, Geomagnetic Pulsations, Polar Cusps, Polar Regions, Proton Scattering, Collisional Plasmas, Magnetohydrodynamics, Mean Free Path, Particle Collisions, Self Oscillation

Scientific paper

A microscopic hydrodynamic model is developed for the generation of low-frequency long-period geomagnetic pulsations in the polar cusp. The mechanism of generation is likened to self-oscillation in an open resonator; attention is given to the nonresonant scattering of electrons and protons on low-frequency electromagnetic and electrostatic waves in the magnetospheric plasma; effective collision-numbers are computed for electrons and protons, and the mean free paths are determined. An explanation is provided for the fact that proton temperature is higher than electron temperature in the cusp.

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