Lensing Sunyaev-Zel'dovich Clusters

Abstract

Full-sky microwave surveys like the upcoming Planck satellite mission will detect of order 10^4 galaxy clusters through their thermal Sunyaev-Zel'dovich effect. I investigate the properties of the gravitationally lensing subsample of these clusters. The main results are: (1) The combined sample comprises >~70% of the complete sample. (2) It is confined to redshifts 0.2+-0.1, and to masses (5+-3) x 10^14 solar masses. (3) Using a particular measure for the weak lensing effect, viz. the aperture mass, cluster masses can be determined with a relative accuracy of ~20% if their density profile is known. Consequently, the mass function of the combined sample can accurately be measured. (4) For low-density universes, I predict a sharp peak in the measured (aperture) mass function near 5 x 10^14 solar masses and explain its origin, showing that the peak will be absent in high-density universes. (5) The location of the peak and the exponential decrease of the mass function on its high-mass side will allow the determination of the amplitude of the dark-matter power spectrum on the cluster scale and the baryon fraction in clusters, and constrain the thermal history of the intracluster gas.

submitted to Astronomy & Astrophysics

References in corpus (6)

• Mass function of dark matter halos
• Four Measures of the Intracluster Medium Temperature and Their Relation to a Cluster's Dynamical State
• Weak Lensing by High-Redshift Clusters of Galaxies - I: Cluster Mass Reconstruction
• Expectations For an Interferometric Sunyaev-Zel'dovich Effect Survey for Galaxy Clusters
• The Sunyaev-Zel'dovich Effect in Abell 370
• On the Number Density of Sunyaev-Zel'dovich Clusters of Galaxies

Cited by in corpus (25)

• Catalog Extraction in SZ Cluster Surveys: a matched filter approach
• Completeness in Weak Lensing Searches for Clusters
• The imprints of local superclusters on the Sunyaev-Zel'dovich signals and their detectability with Planck
• Weak-Lensing Halo Numbers and Dark-Matter Profiles
• Detecting Sunyaev-Zel'dovich clusters with PLANCK: II. Foreground components and optimised filtering schemes
• Biases on the cosmological parameters and thermal SZ residuals
• Statistics of Sunyaev-Zel'dovich Cluster Surveys
• Detecting Sunyaev-Zel'dovich clusters with PLANCK: I. Construction of all-sky thermal and kinetic SZ-maps
• The Selection Function of SZ Cluster Surveys
• Gravitational lensing of the CMB by galaxy clusters
• The ISW-tSZ cross correlation: ISW extraction out of pure CMB data
• Studying clusters with Planck
• Detecting Sunyaev-Zel'dovich clusters with PLANCK: III. Properties of the expected SZ-cluster sample
• Cluster detection from surface-brightness fluctuations in SDSS data
• Sunyaev-Zel'dovich Cluster Survey Simulations for Planck
• Constraining CMB-consistent primordial voids with cluster evolution
• On the Angular Correlation Function of SZ Clusters : Extracting cosmological information from a 2D catalog
• Cosmology with the Planck cluster sample
• Predicting the clustering properties of galaxy clusters detectable for the Planck satellite
• Probing Hot Gas in Galaxy Groups through the Sunyaev-Zeldovich Effect
• Cosmological constraints from a 2D SZ catalog
• Spectral Indications of thermal Sunyaev-Zel'dovich Effect in Archeops and WMAP Data
• Some astrophysical implications of dark matter and gas profiles in a new galaxy clusters model
• The Sunyaev-Zel'dovich effect and Faraday rotation contributions of galaxy groups to the CMB angular power spectrum
• Redshift estimation of clusters by wavelet decomposition of their Sunyaev-Zel'dovich morphology