Intrinsic luminosities of the Jovian planets

Details Intrinsic luminosities of the Jovian planets Intrinsic luminosities of the Jovian planets

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980rvgsp..18....1h&link_type=abstract

Reviews of Geophysics and Space Physics, vol. 18, Feb. 1980, p. 1-9.

Physics

Space Physics

19

Astronomical Models, Atmospheric Heating, Gas Giant Planets, Luminous Intensity, Photosphere, Planetary Radiation, Atmospheric Temperature, Electrical Resistivity, Planetary Atmospheres, Planetary Evolution, Radiant Cooling, Radioactivity, Review, Luminescence, Atmosphere, Planets, Jovian Planets, Data, Infrared, Spectrum, Jupiter, Saturn, Interiors, Heat Flux, Models, Comparisons, Neptune, Uranus, Heat Flow, Cooling, Gravity, Phases, Layering, Radioactivity, Temperatures, Emissions, Cores, Formation, Abund

Scientific paper

Available data and theories on the size and nature of interior power sources in the four Jovian planets are reviewed. These four planets are Jupiter, Saturn, Uranus and Neptune. Various models, ranging from simple cooling to gravitational layering to radioactivity, are discussed. The evidence and interpretations presented in the discussion seem to indicate that (1) all four Jovian planets were once more luminous and are presently cooling to a state of equilibrium with sunlight; and (2) the thermal evolution of the Jovian planets is predominantly controlled by their photospheres and does not depend on interior conductivity. Both conclusions are consistent with either the simple adiabatic cooling model or with more complicated gravitational unmixing models of the type discussed by Stevenson and Salpeter (1977).

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