Other
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....9720925l&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. E12, p. 20,925-20,928.
Other
14
Mars (Planet), Molecular Ions, Particle Trajectories, Planetary Magnetic Fields, Solar Planetary Interactions, Planetary Magnetospheres, Planetary Magnetotails
Scientific paper
A model has been developed to investigate the transport of the upward flowing ionospheric ions from closed field lines of the Martian day and nightside 'polar' magnetosphere into the solar wind interaction region. Guiding center ion trajectories in the polar regions, for a range of injection conditions of the convection electric field, gravitation, and magnetic gradient force using a simplified three-dimensional magnetospheric model were calculated. The dependence of the heavy ion escape on the Martian magnetopause positions and the solar wind ram pressure was also investigated. The calculated parallel escape fluxes of molecular ions are in good agreement with the Phobos 2 measurements and other theoretical calculations. Our investigation of molecular ion escape from high latitudes strongly suggests the presence of a weak intrinsic magnetic moment, (estimated to be about 10 exp 22 G cu cm), since only then are molecular ions capable of reaching the solar wind interaction region.
Bauer Siegfried J.
Lammer Helmut
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