We study the clustering properties of the galaxy clusters detectable by the Planck satellite owing to their thermal Sunyaev-Zel'dovich (SZ) effect. We take the past light-cone effect and the redshift evolution of both the underlying dark matter correlation function and the cluster bias factor into account. A theoretical mass-temperature relation allows us to convert the sensitivity limit of a catalogue into a minimum mass for the dark matter haloes hosting the clusters. We confirm that the correlation length is an increasing function of the sensitivity limits defining the survey. Using the expected characteristics of the Planck cluster catalogue, which will be a quite large and unbiased sample, we predict the two-point correlation function and power spectrum for different cosmological models. We show that the wide redshift distribution of the Planck survey will allow us to constrain the cluster clustering properties up to z~ 1. The dependence of our results on the main cosmological parameters (the matter density parameter, the cosmological constant and the normalization of the density power spectrum) is extensively discussed. We find that future Planck clustering data will place only mild constraints on the cosmological parameters, because the results depend on the physical characteristics of the intracluster medium, like the baryon fraction and the mass-temperature relation. Once the cosmological model and the Hubble constant are determined, the clustering data will allow a determination of the baryon fraction with an accuracy of a few per cent.

Predicting the Clustering Properties of Galaxy Clusters Detectable by the Planck satellite

MOSCARDINI, LAURO;MATARRESE, SABINO;ANDREANI, PAOLA MICHELA
2002

Abstract

We study the clustering properties of the galaxy clusters detectable by the Planck satellite owing to their thermal Sunyaev-Zel'dovich (SZ) effect. We take the past light-cone effect and the redshift evolution of both the underlying dark matter correlation function and the cluster bias factor into account. A theoretical mass-temperature relation allows us to convert the sensitivity limit of a catalogue into a minimum mass for the dark matter haloes hosting the clusters. We confirm that the correlation length is an increasing function of the sensitivity limits defining the survey. Using the expected characteristics of the Planck cluster catalogue, which will be a quite large and unbiased sample, we predict the two-point correlation function and power spectrum for different cosmological models. We show that the wide redshift distribution of the Planck survey will allow us to constrain the cluster clustering properties up to z~ 1. The dependence of our results on the main cosmological parameters (the matter density parameter, the cosmological constant and the normalization of the density power spectrum) is extensively discussed. We find that future Planck clustering data will place only mild constraints on the cosmological parameters, because the results depend on the physical characteristics of the intracluster medium, like the baryon fraction and the mass-temperature relation. Once the cosmological model and the Hubble constant are determined, the clustering data will allow a determination of the baryon fraction with an accuracy of a few per cent.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/1357162
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 11
  • ???jsp.display-item.citation.isi??? 11
social impact