Cosmology with wide-field SZ cluster surveys: Selection and Systematic Effects

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dc.creatorJuin, J. B.
dc.creatorYvon, D.
dc.creatorRefregier, A.
dc.creatorYeche, C.
dc.date2005-12-14
dc.date.accessioned2026-07-07T06:49:07Z
dc.date.available2026-07-07T06:49:07Z
dc.descriptionThe cosmological potential of large-scale structure observations for cosmology have been extensively discussed in the litterature. In particular, it has recently been shown how Sunyaev-Zel'dovich (SZ) cluster surveys can be used to constrain dark energy parameters. In this paper, we study whether selection and systematics effects will limit future wide-field SZ surveys from achieving their cosmological potential. For this purpose, we use a sky simulation and an SZ-cluster detection software presented in Pires et al. (2005), using the future Olimpo, APEX and Planck surveys as a concrete examples. We show that the SZ-cluster selection function and contamination of SZ-cluster catalogues are more complex than is usually assumed. In particular, the simulated field-to-field detected cluster counts is a factor 3 larger than the expected Poisson fluctuations. We also study the impact of missing redshift information and of the uncertainty of the scaling relations for low mass clusters. We quantify, through hypothesis tests, how near-future SZ experiments can be used to discriminate between different structure formation models. Using a maximum likelihood approach, we then study the impact of these systematics on the joint measurement of cosmological models and of cluster scaling relations.
dc.description23 pages, submitted to Astron. & AstroPhys
dc.identifierhttps://arxiv.org/abs/astro-ph/0512378
dc.identifierhttp://arxiv.org/abs/astro-ph/0512378
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/104222
dc.subjectAstrophysics
dc.titleCosmology with wide-field SZ cluster surveys: Selection and Systematic Effects
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