Relationship between electric fields and field-aligned currents according to data from the Intercosmos-Bulgaria-1300 satellite

Physics

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Auroral Zones, Electric Fields, Field Aligned Currents, Geomagnetism, Intercosmos Satellites, Magnetosphere-Ionosphere Coupling, Correlation Coefficients, Ionospheric Currents

Scientific paper

Electric and magnetic fields in the auroral region were measured by the I-B-1300 satellite. It is shown that, in the field-aligned current (FAC) region, the electric and magnetic field profiles are found to be similar, which is evidently a manifestation of ionospheric-magnetospheric connections, where the closure of the FACs occurs through meridional Pedersen currents, while the Hall current is nondivergent. The Pedersen conductivity is estimated for regions of Ex and Delta By proportionality. The results of these calculations agree well with conductivity values obtained through satellite-borne electron measurements.

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