VLA observations of Uranus at 1.3-20 CM

Details VLA observations of Uranus at 1.3-20 CM VLA observations of Uranus at 1.3-20 CM

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988icar...75..306d&link_type=abstract

Icarus (ISSN 0019-1035), vol. 75, Aug. 1988, p. 306-323.

Physics

14

Brightness Temperature, Planetary Atmospheres, Planetary Radiation, Radio Observation, Uranus (Planet), Very Large Array (Vla), Flux Density, High Resolution, Light Curve, Mapping, Temperature Distribution, Voyager Project

Scientific paper

Observations of Uranus, obtained with resolution 0.5-1.2 arcsec at wavelengths 1.3, 2, 6, and 20 cm using the A and B configurations of the VLA in June-July 1982, October 1983, and February 1984, are reported. The disk-averaged brightness temperatures (DABTs) are determined by model fitting, and the results are presented in extensive graphs and contour maps and characterized in detail. Findings discussed include: (1) an overall spectrum which is relatively flat above 6 cm, (2) 1.3-6-cm brightness which is concentrated nearer to the pole than to the subsolar point, and (3) small changes in DABT from 1982 to 1983/1984 (consistent with an explanation based on a pole-equator temperature gradient).

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