Exo-plasmaspheric refilling due to ponderomotive forces induced by geomagnetic pulsations

Details Exo-plasmaspheric refilling due to ponderomotive forces induced by geomagnetic pulsations Exo-plasmaspheric refilling due to ponderomotive forces induced by geomagnetic pulsations

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997jgr...102.4841f&link_type=abstract

Journal of Geophysical Research, Volume 102, Issue A3, p. 4841-4846

Physics

Plasma Physics

7

Magnetospheric Physics: Magnetosphere/Ionosphere Interactions, Magnetospheric Physics: Mhd Waves And Instabilities, Space Plasma Physics: Nonlinear Phenomena, Space Plasma Physics: Wave/Particle Interactions

Scientific paper

The effect of exo-plasmaspheric refilling due to ponderomotive forces induced by geomagnetic pulsations is considered. It is shown that two maxima of high-density cold plasma can appear on field lines near the dayside magnetospheric boundary, located symmetrically with respect to the equator. When moving away from the noon meridional plane the plasma density distribution along the field line undergoes a smooth transition from two off-equatorial maxima to one maximum at the equator. We calculate the plasma condensation due to the ponderomotive forces in this region. On the other hand, the satellite data have shown that exo-plasmaspheric Pcl pulsations have a maximum in the noon-dusk sector. These facts bring us to a conclusion that the formation of high-density cold plasma outside plasmasphere in the magnetospheric trough in the noon-dusk sector may be accelerated by ponderomotive effects of Pcl pulsations.

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