Cosmology with cluster surveys

Details Cosmology with cluster surveys Cosmology with cluster surveys

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004prama..63..871m&link_type=abstract

Pramana, vol. 63, Issue 4, p.871

Physics

Cosmology, Cosmic Microwave Background, Clusters.

Scientific paper

Surveys of clusters of galaxies provide us with a powerful probe of the density and nature of the dark energy. The red-shift distribution of detected clusters is highly sensitive to the dark energy equation of state parameter w. Upcoming Sunyaev-Zel'dovich (SZ) surveys would provide us large yields of clusters to very high red-shifts. Self-calibration of cluster scaling relations, possible for such a huge sample, would be able to constrain systematic biases on mass estimators. Combining cluster red-shift abundance with limited mass follow-up and cluster mass power spectrum can then give constraints on w1 as well as on s 8 and W M to a few per cents.

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