On the determination of the degree of cosmological Compton distortions and the temperature of the cosmic blackbody radiation

Rephaeli, Y.

doi:10.1086/158398

On the determination of the degree of cosmological Compton distortions and the temperature of the cosmic blackbody radiation

Y. Rephaeli
(
- Cornell U., Radio. Space Res. Ctr.
)

Nov, 1980

6 pages

Published in:

Astrophys.J. 241 (1980) Vol. 241, 858-863

Published: Nov, 1980

DOI:

10.1086/158398

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Abstract: (submitter)

A method is described for a determination of the cosmic blackbody radiation temperature and its degree of cosmological Compton-distortions. Differential measurements at only three frequencies of the additional Compton distortions in a direction to a gas-rich cluster of galaxies are sufficient to determine both of these quantities. The method is essentially independent of the gas properties and, it is argued, can significantly improve on previous determinations of the radiation temperature. The method is implicitly based on the universality of the radiation and thus, if successfully applied, can give strong evidence for the universal nature of the radiation.

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