On the Angular Correlation Function of SZ Clusters : Extracting cosmological information from a 2D catalog
Abstract
We discuss the angular correlation function of Sunyaev-Zel'dovich (SZ)-detected galaxy clusters as a cosmological probe. As a projection of the real-space cluster correlation function, the angular function samples the underlying SZ catalog redshift distribution. It offers a way to study cosmology and cluster evolution directly with the two-dimensional catalog, even before extensive follow-up observations, thereby facilitating the immediate scientific return from SZ surveys. As a simple illustration of the information content of the angular function, we examine its dependence on the parameter pair Om_m, sigma_8 in flat cosmologies. We discuss sources of modeling uncertainty and consider application to the future Planck SZ catalog, showing how these two parameters and the normalization of the SZ flux-mass relation can be simultaneously found when the local X-ray cluster abundance constraint is included.
Keywords
Cite
@article{arxiv.astro-ph/0302567,
title = {On the Angular Correlation Function of SZ Clusters : Extracting cosmological information from a 2D catalog},
author = {S. Mei and J. G. Bartlett},
journal= {arXiv preprint arXiv:astro-ph/0302567},
year = {2009}
}
Comments
11 pages, 5 figures. A&A, 410, 767; corrected typo, published version