Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pazh....6..387s&link_type=abstract
(Pis'ma v Astronomicheskii Zhurnal, vol. 6, July 1980, p. 387-393.) Soviet Astronomy Letters, vol. 6, July-Aug. 1980, p. 213-216
Astronomy and Astrophysics
Astronomy
4
Galactic Clusters, Hot Electrons, Interstellar Extinction, Microwave Scattering, Radiant Flux Density, Relic Radiation, Submillimeter Waves, Background Radiation, Black Body Radiation, Intergalactic Media, Radial Velocity
Scientific paper
Scattering of microwave-background photons by hot electrons may cause galaxy clusters containing hot intergalactic gas to become strong sources of submillimeter radiation as well as 'negative sources' in the millimeter range. The flux density that should be recorded for a cluster, its spectrum, and the dependence of the 'luminosity' on redshift are calculated. The change in the background radiation intensity in the direction toward a cluster is evaluated in the single-scattering approximation. Although a simple solution based on the Kompaneets diffusion equation yields similar results, that equation is inapplicable in the case of optically thin gas.
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