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Published January 25, 1974 | public
Journal Article

Pioneer 10 Infrared Radiometer Experiment: Preliminary Results

Abstract

Thermal maps of Jupiter at 20 and 40 micrometers show structure closely related to the visual appearance of the planet. Peak brightness temperatures of 126° and 145°K have been measured on the South Equatorial Belt, for the 20- and 40-micrometer channels, respectively. Corresponding values for the South Tropical Zone are 120° and 138°K. No asymmetries between the illuminated sunlit and nonilluminated parts of the disk were found. A preliminary discussion of the data, in terms of simple radiative equilibrium models, is presented. The net thermal energy of the planet as a whole is twice the solar energy input.

Additional Information

© 1974 American Association for the Advancement of Science. Received 21 December 1973. We thank J. Bennett for her efforts in the programming and data reduction. The cooperation of all the personnel of the Pioneer Project is also gratefully acknowledged.

Additional details

Created:
August 19, 2023
Modified:
October 23, 2023