Mathematics
Scientific paper
Dec 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991esasp.330..139p&link_type=abstract
In ESA, Cluster Dayside Polar Cusp p 139-144 (SEE N92-26294 17-46)
Mathematics
1
Auroral Arcs, Daytime, Magnetic Field Reconnection, Magnetopause, Magnetosheath, Polar Cusps, Geomagnetism, Magnetic Fields, Mathematical Models, Polar Caps, Solar Wind
Scientific paper
A model of geomagnetic field in the dayside magnetosphere is discussed. The model is based on the supposition of the partial penetration of the magnetosheath's magnetic field into the magnetosphere in the vicinity of the reconnection line at the magnetopause. Configurations of the plasma in the vicinity of that line is analyzed, and electric field equipotentials are projected onto the polar ionosphere along the field lines of the model geomagnetic field. Effects of the potential and vortex components of the magnetopause electric field on the dynamics of the aurorae in the cusp region are discussed. On the basis of the model proposed, an interpretation of the auroral dynamics in the cusp region is given.
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