Physics
Scientific paper
Apr 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987lpl..rept.....s&link_type=abstract
Semiannual Status Report Arizona Univ., Tucson. Lunar and Planetary Lab.
Physics
Emission Spectra, Hydrogen, Iue, Jupiter (Planet), Saturn Atmosphere, Continuous Spectra, Reflectance, Solar Radiation
Scientific paper
Successful IUE observations of the equatorial sunlit atmosphere of Jupiter and Saturn have been obtained. Spectra containing atomic and molecular hydrogen and solar reflection continuum emissions have been analyzed, with the purpose of determining the long term temporal behavior of the electroglow process. Quantitative estimates have been established for the first time using a model analysis of the short wavelength region of the spectrum. Both systems show varying degrees of long term variability in hydrogen emission rate, but the time scale is too short to determine whether there is a dependence on solar cycle activity. As part of the emission modeling program, a preliminary point source spreading function for the IUE SWP instrument has been established, suggesting a wavelength dependence in spectral line width different from previous analyses. Further IUE observations are planned for both Jupiter and Saturn.
Holberg Jay Brian
Shemansky Don E.
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