Electrical and magnetic fields in the neighborhood of the magnetopause.

Details Electrical and magnetic fields in the neighborhood of the magnetopause. Electrical and magnetic fields in the neighborhood of the magnetopause.

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ge%26ae..28..488a&link_type=abstract

Geomagn. Aeron., Vol. 28, No. 4, p. 488 - 493

Computer Science

Earth Magnetosphere: Magnetic Fields, Earth Magnetosphere: Electric Fields

Scientific paper

A theoretical study was made of the structure of the magnetic and electrical fields in the neighborhood of the magnetopause. The basis for the work is a model in which the solar wind is represented by a conducting fluid. The electrical and magnetic fields in the neighborhood of the magnetopause are formed as a result of the joint influence of three processes: a) transport of the interplanetary magnetic field frozen into solar wind plasma, b penetration of the interplanetary magnetic field within the magnetosphere, and c) diffusion of the magnetospheric field into the transition layer. The thickness of the magnetopause and field structure in its neighborhood are determined by a single dimensionless parameter Rm, the Reynolds magnetic number. The Ampere force acting on plasma is computed on the basis of the solution obtained in a kinetic approximation. Far from the magnetopause, where the frozen-in field approximation is correct, this force causes braking of the flow; near the magnetopause, where diffusion predominates, it accelerates the plasma.

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