Weak auroral emissions and particle precipitations in the dusk auroral oval

Details Weak auroral emissions and particle precipitations in the dusk auroral oval Weak auroral emissions and particle precipitations in the dusk auroral oval

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....9411933o&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, Sept. 1, 1989, p. 11933-11947.

Physics

4

Auroral Zones, Auroras, Particle Precipitation, Auroral Arcs, Autocorrelation, Diurnal Variations, Magnetic Storms, Visible Spectrum

Scientific paper

Faint auroral displays of pulsating auroras and faint discrete red auroras are examined, including their relations to the region of proton auroras near the equatorial edge of the dusk oval. The study is based on monomchromatic auroral images at 5577, 6300, and 4861 A and simultaneous precipitating auroral particle data from the USAF/DMSP F6 satellite. It is confirmed that pulsating auroras are associated with the intensification of precipitating electron flux from the central plasma sheet. Discrete auroras sometimes appeared only in the 6300-A images. These discrete auroras correspond to weak precipitation spikes of low-energy electrons.

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