The thermal radiation of Saturn and its rings

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48 Scopus citations


Infrared observations of Saturn from 5 to 40 μm are described. There is intense limb brightening at 12.35 μm over the southern polar cap. The C ring is anomalously bright at 10 and 20 μm and has bluer (hotter) colours than the A and B rings. The ring spectra have been extrapolated beyond 40 μm and subtracted from low-resolution far-infrared measurements to show that the far-infrared spectrum of the disk of Saturn is qualitatively similar to that of Jupiter and that Saturn radiates 2.5 ± 0.6 times the energy it absorbs from the Sun.

Original languageEnglish (US)
Pages (from-to)37-44
Number of pages8
Issue number1
StatePublished - Sep 1975

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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