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Title:
On the determination of the degree of cosmological Compton distortions and the temperature of the cosmic blackbody radiation
Authors:
Rephaeli, Y.
Affiliation:
AA(Cornell University, Ithaca, N.Y.)
Publication:
Astrophysical Journal, Part 1, vol. 241, Nov. 1, 1980, p. 858-863. (ApJ Homepage)
Publication Date:
11/1980
Category:
Space Radiation
Origin:
STI
NASA/STI Keywords:
Background Radiation, Black Body Radiation, Compton Effect, Cosmology, Cosmic Gases, Galactic Clusters, Temperature Distribution
DOI:
10.1086/158398
Bibliographic Code:
1980ApJ...241..858R

Abstract

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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