Physics
Scientific paper
Sep 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990georl..17.1653m&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 17, Sept. 1990, p. 1653-1656.
Physics
14
Bow Waves, Earth (Planet), Jupiter (Planet), Plasma Waves, Saturn (Planet), Uranus (Planet), Electric Fields, Magnetosheath, Plasma Pressure, Solar Wind, Voyager Project
Scientific paper
Plasma wave measurements from the Voyager 2 crossing of Neptune's bow shock are presented and compared with measurements from the bow shocks of Earth, Jupiter, Saturn, and Uranus. The wave amplitudes above 0.01fp, when normalized to the solar wind ion thermal energy density at each planet, are significantly higher at the outer planets than at Earth. Despite the differences in amplitude, the shock spectra of all the planets can be fitted to curves of similar form in this frequency range. The total normalized electric field energy densities exhibit an exponential dependence on ion thermal Mach number, Magnetosheath wave energies are comparable at all of the planets when normalized to the downstream plasma pressure.
Coroniti Ferdinan V.
Gurnett Donald A.
Kennel Charles F.
Kurth Willaim S.
Moses Stewart L.
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