Superclusters with thermal SZ effect surveys

Details Superclusters with thermal SZ effect surveys Superclusters with thermal SZ effect surveys

2002-07-19

arxiv.org/abs/astro-ph/0207420v1

Mon.Not.Roy.Astron.Soc. 338 (2003) 433

Astronomy and Astrophysics

Astrophysics

13 pages, 9 figures, submitted to MNRAS

Scientific paper

10.1046/j.1365-8711.2003.06060.x

We use a simple analytic model to compute the angular correlation function of clusters identified in upcoming thermal SZ effect surveys. We then compute the expected fraction of close pairs of clusters on the sky that are also close along the line of sight. We show how the expected number of cluster pairs as a function of redshift is sensitive to the assumed biasing relation between the cluster and the mass distribution. We find that, in a LambdaCDM model, the fraction of physically associated pairs is 70% for angular separations smaller than 20 arcmin and clusters with specific flux difference larger than 200 mJy at 143 GHz. The agreement of our analytic results with the Hubble volume N-body simulations is satisfactory. These results quantify the feasibility of using SZ surveys to compile catalogues of superclusters at any redshifts.

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