A quantitative model for the potential resulting from reconnection with an arbitrary interplanetary magnetic field

Details A quantitative model for the potential resulting from reconnection with an arbitrary interplanetary magnetic field A quantitative model for the potential resulting from reconnection with an arbitrary interplanetary magnetic field

Oct 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974jgr....79.4186g&link_type=abstract

Journal of Geophysical Research, vol. 79, Oct. 1, 1974, p. 4186-4194. Research supported by the Instituto de Pesquisas Espaciai

Computer Science

Sound

92

Electric Potential, Geomagnetism, Interplanetary Magnetic Fields, Magnetopause, Solar Wind, Astronomical Models, Atmospheric Models, Balloon Sounding, Ionospheric Heating, Magnetosheath, Plasma Dynamics, Polar Caps, Three Dimensional Models

Scientific paper

A quantitative three-dimensional model is proposed for the electric potential arising from magnetopause reconnection, in which several approximations are made concerning configuration of the magnetosheath flow, limitations on the magnitude of the reconnection speed, and the geometry of the problem. These approximations are such that the model yields an upper limit for the potential. The magnitude of the polar cap ionospheric electric field computed from this model is larger than that measured on balloons by an average factor of about 3, and the model reproduces the temporal variations of the experimental data. It is concluded that magnetopause reconnection is a highly efficient process that is probably the dominant mechanism driving polar cap convection and supplying energy to the magnetosphere. It seems that the most efficient way for the solar wind to pass the magnetospheric obstacle is by magnetopause reconnection.

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