Observations of auroral electron inverted-V structures by the AUREOL-3 satellite

摘要: Abstract We present a detailed statistical study of the distribution inverted-V electron precipitation commonly detected in 500–2000 km altitude range aboard AUREOL-3 satellite. These structured precipitations are statistically observed inside auroral oval with maximum occurrence evening-midnight sector. They correspond to primary fluxes peaked at energies generally below 10 keV and precipitating large-scale structures (50–100 latitudinal width). It is shown that, as predicted by collisionless kinetic theories, most clear relationship between field-aligned current density carried 1–20 electrons potential drop inferred from particle functions. Furthermore demonstrates existence strong heating, acceleration region.