Enhancements of Fluxes of Precipitating Energetic Electrons on the Boundary of the Outer Radiation Belt of the Earth and Position of the Auroral Oval Boundaries

摘要

An analysis of enhancements in the fluxes of electrons with energies above 300 keV registered onboard of the Coranas-F satellite in the polar regions at the boundary of the outer radiation belt is performed. Cases are revealed when the increases in question were observed consequently during multiple crossings of the outer radiation belt boundary. Localization of the revealed events relative to the auroral oval using the data of almost simultaneous observations of electrons with energies of 0.1-10 keVon the Meteor-3M satellite and OVATION model is studied. It is shown that almost all studied increases in relativistic electrons are localized at latitudes of the auroral oval. Various mechanisms which could cause the observed increases are discussed, as well as a possibility of formation of local traps of energetic particles in the high-latitude magnetosphere.