The selection function of SZ cluster surveys
نویسندگان
چکیده
منابع مشابه
The Selection Function of SZ Cluster Surveys
We study the nature of cluster selection in Sunyaev-Zel'dovich (SZ) surveys, focusing on single frequency observations and using Monte Carlo simulations incorporating instrumental effects, primary cosmic microwave background (CMB) anisotropies and extragalactic point sources. Clusters are extracted from simulated maps with an optimal, multi–scale matched filter. We introduce a general definitio...
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The potential of the Sunyaev-Zel’dovich (SZ) effect for cluster studies has long been appreciated, although not yet fully exploited. Recent technological advances and improvements in observing strategies have changed this, to the point where it is now possible to speak of this subject at a meeting devoted to surveys in Cosmology. We will discuss SZ surveys by distinguishing what may be called p...
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Hydrodynamical simulations are used in combination with the PressSchechter expression to simulate Sunyaev-Zel’dovich (SZ) galaxy cluster sky maps. These are used to gauge the ability of future SZ observations to provide information about the cosmological parameters H0, ΩM, and the gas fraction fg in clusters. This work concentrates on prospects for AMI, the Arcminute MicroKelvin Imager, a new t...
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The Sunyaev-Zel’dovich (SZ) effect of galaxy clusters is a tool to measure three quantities: Compton parameter, electron temperature, and cluster peculiar velocity. However, a major problem is non-removed contamination by astrophysical sources that emit in the SZ frequencies. This includes interstellar dust emission, infra-red (IR) galaxies, and radio sources in addition to primary Cosmic Micro...
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The Sunyaev-Zel’dovich (SZ) effect of galaxy clusters is a tool to measure three quantities: Compton parameter, electron temperature, and cluster peculiar velocity. However, a major problem is non-removable (or non-removed) contamination by astrophysical sources which emit in the SZ frequencies. This includes interstellar dust emission, infra-red (IR) galaxies and radio sources. Such contaminat...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2004
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20048093