Rotational variations in the radio brightness of Mars

Details Rotational variations in the radio brightness of Mars Rotational variations in the radio brightness of Mars

May 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...213l.131a&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 213, May 1, 1977, p. L131-L134.

Astronomy and Astrophysics

Astrophysics

4

Brightness Temperature, Mars (Planet), Planetary Radiation, Planetary Rotation, Radio Emission, Error Analysis, Planetary Temperature, Temperature Measurement

Scientific paper

Observations of Mars show that its disk-averaged brightness temperature at a wavelength of 2.8 cm is undoubtedly a function of central-meridian longitude. Temperature differences as great as 8 K are measured as the planet rotates. There is no unambiguous interpretation of these measurements, but the existence of the phenomenon may explain the difficulty in establishing a phase-brightness curve for Mars and could be a source of inaccuracy in observations for which Mars is used as a calibrating source.

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