Intracluster comptonization of the CMB in CDM cosmologies.
Abstract
The authors present calculations of the mean sky-averaged Comptonization parameter describing the scattering of the CMB by hot gas in clusters of galaxies, in an array of flat and open CDM cosmologies. The models are globally normalized to fit cluster X-ray data, and the intracluster gas is assumed to have evolved in a manner consistent with current observations. The authors also discuss the rms temperature fluctuations induced by a population of evolving clusters. Finally, they predict the number counts of clusters across which a net flux (with respect to the CMB) higher than some limiting value can be detected. Such number counts are specifically predicted for the COBRAS/SAMBA mission.
- Publication:
-
Microwave Background Anisotropies
- Pub Date:
- 1997
- Bibcode:
- 1997mba..conf..401V
- Keywords:
-
- Cosmic Microwave Background: Scattering;
- Cosmic Microwave Background: Clusters of Galaxies;
- Cosmic Microwave Background: Cosmology