Precision cosmology with a wide area XMM cluster survey

Details Precision cosmology with a wide area XMM cluster survey Precision cosmology with a wide area XMM cluster survey

2010-09-16

arxiv.org/abs/1009.3182v2

Mon.Not.Roy.Astron.Soc.414:1732,2011

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Published in MNRAS. (minor changes with respect to the initial version)

Scientific paper

10.1111/j.1365-2966.2011.18511.x

We explore the cosmological constraints expected from wide area XMM-type cluster surveys covering 50-200 deg2, under realistic observing conditions. We perform a Fisher matrix analysis based on cluster number counts in combination with estimates of the 2-point cluster correlation function. The effect of the survey design is implemented through an observationally well tested cluster selection function. Special attention is given to the modelling of the shot noise and sample variance, which we estimate by applying our selection function to numerically simulated surveys. We then infer the constraints on the equation of state of the dark energy considering various survey configurations. We quantitatively investigate the respective impact of the cluster mass measurements, of the correlation function and of the 1

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