Physics
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mja..reptq....w&link_type=abstract
In its Modeling the Jovian Aurora 14 p (SEE N93-11164 02-91)
Physics
Auroral Spectroscopy, Auroras, Emission Spectra, Flux Density, Jupiter Atmosphere, Lyman Alpha Radiation, Proton Precipitation, Ultraviolet Emission, Doppler Effect, Iue, Particle Beams, Protons, Upper Atmosphere
Scientific paper
It was proposed that the Jovian auroral emissions observed by Voyager spacecraft could be explained by energetic protons precipitating into the upper atmosphere of Jupiter. Such precipitation of energetic protons results in Doppler-shifted Lyman alpha emission that can be quantitatively analyzed to determine the energy flux and energy distribution of the incoming particle beam. Modeling of the expected emission from a reasonably chosen Voyager energetic proton spectrum can be used in conjunction with International Ultraviolet Explorer (IUE) observations, which show a relative lack of red-shifted Lyman alpha emission, to set upper limits on the amount of proton precipitation taking place in the Jovian aurora. Such calculations indicate that less than 10 percent of the ultraviolet auroral emissions at Jupiter can be explained by proton precipitation.
Clarke John T.
Cravens Thomas E.
Curran Dian Beard
Waite H. Jr. J..
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