Physics
Scientific paper
Mar 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995angeo..13..237r&link_type=abstract
Annales Geophysicae (ISSN 0992-7689), vol. 13, no. 3, p. 237-241
Physics
Anisotropy, Charged Particles, Daytime, Geomagnetism, Magnetopause, Magnetosheath, Plasma Pressure, Shock Fronts, Boundary Conditions, Magnetic Flux, Pressure Distribution, Solar Wind, Velocity Distribution
Scientific paper
We present a numerical solution for the magnetosheath particles that describes the distribution of the pressure anisotropy of the magnetosheath plasma in the midday meridian plane. The pressure anisotropy is a maximum near the magnetopause subsolar point (p(normal)/p(parallel) approximately = 10). The pressure anisotropy is caused by two factors: particles with small pitch angles (V(parallel) greater than V(normal)) which travel along the magnetic field lines away from the equatorial plane of the magnetosheath; and particles, after crossing the bowshock, which reach the bulk velocity component directed along the magnetic field lines again, away from the magnetosheath equatorial plane. This velocity increases distance from the subsolar point of the bowshock, and does not permit particles with large pitch angles (V(normal) greater than V(parallel)) to move toward the equatorial plane.
Lyatsky W. B.
Rezhenov B. V.
Safargaleev Vladimir
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