Particle excitation, airglow and H2 vibrational disequilibrium in the atmosphere of Jupiter

Details Particle excitation, airglow and H2 vibrational disequilibrium in the atmosphere of Jupiter Particle excitation, airglow and H2 vibrational disequilibrium in the atmosphere of Jupiter

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984usc..reptr....s&link_type=abstract

Final Technical Report University of Southern California, Los Angeles.

Astronomy and Astrophysics

Astronomy

Extreme Ultraviolet Radiation, Hydrogen, Jupiter (Planet), Particle Emission, Saturn Atmosphere, Ultraviolet Astronomy, Atmospheric Composition, Atmospheric Models, Data Processing, Data Reduction, Uranus Atmosphere

Scientific paper

The extreme ultraviolet EUV emission produced by particle excitation of the hydrogen atmospheres of Jupiter and Saturn is examined using model calculations to determine the nature of the energy deposition process and the effect of such processes on atmospheric structure. Tasks ranging from examination of phenomenologically related processes on Saturn and Titan to analysis of experimental laboratory data required to allow accurate modeling of emissions from hydrogenic atmospheres are investigated. An explanation of the hydrogen H Ly(alpha) bulge in Jupiter's emission from the equatorial region is presented. It is proposed that Saturn, rather then Titan is the major source of the extended hydrogen cloud. The atomic hydrogen detected at the rings of Saturn may originate predominantly from the same source. A cross calibration is obtained between the Pioneer 10 EUV photometer and the Voyager EUV spectrometers, thus providing a direct measure of the temporal morphology of Jupiter between a minimum and a maximum in solar activity. Atomic and molecular data required for the research program are analyzed. An extrapolation of conditions in the upper atmospheres of Jupiter and Saturn produces a predicted condition at Uranus in terms of excitation and hydrogen escape rates that may be observed at Voyager-Uranus encounter.

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