Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....9215367w&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 92, Dec. 30, 1987, p. 15367-15375.
Astronomy and Astrophysics
Astronomy
3
Magnetopause, Planetary Magnetospheres, Satellite Observation, Solar Planetary Interactions, Uranus (Planet), Bow Waves, Magnetosheath, Plasma Waves, Radio Sources (Astronomy), Shock Waves, Voyager 2 Spacecraft
Scientific paper
As Voyager passed outward through the magnetosphere of Uranus, the planetary radio astronomy experiment recorded continuum radio emissions produced by sources near the Uranian nightside magnetic pole. Scintillations occurred in this emission over a period of about 5 days as Voyager crossed the Uranian magnetosheath and were observed by the magnetometer and plasma experiments. Early on Jan. 29, 1986 the scintillations were extremely wideband (or order of magnitude 6:1 in frequency) and deep (of order of magnitude 50 percent in power). It is shown that these scintillations originated in propagating waves with wavelengths near 20,000 km, phase velocities near 575 km/s, and minute plasma content. In effect, the kilometric emission caught and highlighted a diaphanous wave pattern drifting downwind along the magnetosheath between Voyager and the kilometric radio source regions near Uranus.
Dusenbery Paul B.
Evans David R.
Warwick James W.
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