Physics
Scientific paper
Sep 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982georl...9..965g&link_type=abstract
Geophysical Research Letters, vol. 9, Sept. 1982, p. 965-968. Research supported by the Southwest Research Institute
Physics
26
Auroral Arcs, Dynamics Explorer Satellites, Electron Emission, Oxygen Spectra, Plasma Heating, Satellite Observation, Electron Energy, Flow Velocity, Magnetic Field Configurations, Maxwell-Boltzmann Density Function, Ring Currents
Scientific paper
Conjunctive observations of the Dynamics Explorer satellite pair and the Pacific Northwest Laboratory scanning photometer unit at Richland, WA have allowed identification of the low energy, heated, electron population associated with the 6300 A Stable Auroral Red (SAR) arc emission. Measurements over the SAR arc on day 296 of 1981 show an enhanced flux in the low altitude 5-12 eV electrons. Analysis of this electron population shows them to be fairly Maxwellian, with temperatures on the order of 9900 + or - 1100 K and an earthward field aligned velocity of approximately 275 + or - 60 km/sec. The electrons are not accompanied by ion precipitation. The ion loss cone is empty at least as high as 6000 km. This fact may cast some doubt as to the role of the ring current ions in the SAR arc production.
Burch James. L.
David Winningham J.
Gurgiolo Chris
Slater Donald W.
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