Cosmological Implications of the BIMA 30 Ghz Sunyaev-Zel'dovich Effect Galaxy Cluster Survey

Details Cosmological Implications of the BIMA 30 Ghz Sunyaev-Zel'dovich Effect Galaxy Cluster Survey Cosmological Implications of the BIMA 30 Ghz Sunyaev-Zel'dovich Effect Galaxy Cluster Survey

2002-07-31

arxiv.org/abs/astro-ph/0208005v1

Astrophys.J.582:574-585,2003

Astronomy and Astrophysics

Astrophysics

Latex 11 pages and 6 figures, submitted to ApJ June 28, 2002

Scientific paper

10.1086/344749

We explore the cosmological implications of 7 deep survey fields observed at the Berkeley-Illinois-Maryland Association (BIMA) Array with 30 GHz receivers. These observations probe the Cosmic Microwave Background anisotropy on scales corresponding to l=5500, and an earlier analysis of these data detected no galaxy clusters. We use numerical cluster simulations and mock observations to characterize the cluster detection efficiency for each of the BIMA fields. With these detection efficiencies we derive constraints on the cosmological parmaters OmegaM and sigma8, ruling out those models which overproduce galaxy clusters. Using only these seven BIMA fields, we calculate a 2sigma upper limit of sigma8 < 1.00OmegaM**(-0.43OmegaM-0.22) for flat models with 0.1

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