Physics
Scientific paper
Aug 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989georl..16..957d&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 16, Aug. 1989, p. 957-960.
Physics
5
Magnetic Moments, Neptune Atmosphere, Planetary Magnetospheres, Space Plasmas, Planetary Rotation, Plasma Interactions, Solar Planetary Interactions, Solar Wind, Neptune, Magnetosphere, Hypotheses, Shielding, Magnetic Properties, Size, Solar Wind, Particles, Radiation Belts, Emissions, Radio Waves, Plasma, Magnetic Moment, Dipole, Energy, Calculations, Comparisons
Scientific paper
It is argued that, if Neptune has a large magnetic moment, a weak supply of plasma for its magnetosphere, and a magnetic moment that is in near alignment with the planetary spin axis, the Neptunian magnetosphere is almost completely quiescent except for a region near the magnetopause. There are two magnetic power sources: the flowing, magnetized solar wind, and the kinetic energy of planetery spin. It is predicted that Neptune has a magnetic moment of at least 1 G-RN to the 3rd, the sum of ionospheric and Triton injections of plasma into Neptune's magnetosphere is less than 1 kg/sec, and Neptune's dipole is aligned with the spin axis and located close to the center of the planet. The criterion for Neptune to be a quiescent magnetosphere is defined by the expenditure of less than 10 to the 9th Watts from all power sources.
Dessler A. J.
Sandel Bill R.
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