Confirmation of the longitudinal dependence of the radio brightness of Mars

Details Confirmation of the longitudinal dependence of the radio brightness of Mars Confirmation of the longitudinal dependence of the radio brightness of Mars

Nov 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...233l.165d&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 233, Nov. 1, 1979, p. L165-L168.

Astronomy and Astrophysics

Astrophysics

2

Brightness Temperature, Mars Surface, Planetary Radiation, Radio Emission, Albedo, Calibrating, Longitude, Microwave Emission, Temperature Distribution

Scientific paper

We confirm the existence of longitudinal variations in the surface brightness of Mars at a wavelength of 2.8 cm. Observations made in 1978 are in good agreement with results obtained during the 1975 opposition if the Martian surface brightness temperature varies approximately as the inverse fourth root of the solar distance. The longitudinal differences in the microwave temperatures may be associated with differences in the bolometric albedo and in the thermal inertias of the subsurface materials of Mars.

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