Physics
Scientific paper
Jul 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980natur.286..237t&link_type=abstract
Nature, vol. 286, July 17, 1980, p. 237-239.
Physics
6
Dynamo Theory, Magnetohydrodynamics, Neptune (Planet), Planetary Cores, Planetary Magnetic Fields, Uranus (Planet), Chemical Composition, Electrical Resistivity, Planetary Structure, Temperature Gradients, Planets, Neptune, Uranus, Cores, Dynamo Theory, Hydromagnetics, Data, Magnetic Fields, Origin, Interiors, Thermal Properties, Composition, Physical Properties, Electrical Properties, Conductivity, Emissions, Density, Pressure, Melting, Temperatures, Gradients, Models, Layers, Cooling, Energy, Convection,
Scientific paper
It is noted that the explanation of the origin of a magnetic field of Uranus is difficult because the structure of the planet's interior is not well known and the strong thermal flux, which is associated with the operation of hydromagnetic dynamos in Jupiter and Saturn, seems to be absent or very low. It is shown that the composition, physical state and electrical conductivity of the planet's core permits the generation of a magnetic field within the very low observational limits of its heat emission. Further, it is suggested that the higher density and higher pressures in the core of Neptune could explain the suspected absence of a measurable field on that planet even though it is a relatively strong source of heat.
Smoluchowski Roman
Torbett M.
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