Auroral particle acceleration by dc and low frequency electric fields

Details Auroral particle acceleration by dc and low frequency electric fields Auroral particle acceleration by dc and low frequency electric fields

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.291...93b&link_type=abstract

In ESA, European Rocket and Balloon Programs and Related Research p 93-95 (SEE N90-13826 05-42)

Physics

Auroras, Electric Fields, Emission Spectra, Low Frequencies, Particle Acceleration, Direct Current, Planetary Magnetic Fields, Satellite Observation, Waves

Scientific paper

Six independent methods to determine DC potential drops along auroral magnetic field lines are described. The results indicate that DC acceleration plays a dominant role, and that the accelerated particles are heated by waves, induced by the same particles. Satellite observations show that the field aligned potential drops are made up of hundreds or thousands of weak double layers. It is concluded that the average electric fields are much weaker than the fluctuating fields, as seen on a satellite. Low frequency electric field spectra show characteristic features that support these conclusions.

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