2001/03/30 by J. M. Diego, E. Martinez-Gonzalez, E. Martínez-González +5
Physics and Astronomy · #Astronomy #Astrophysical Phenomena and Observations #Astrophysics #Cluster (spacecraft) #Cosmic background radiation #Cosmic microwave background #Degeneracy (biology) #Discriminator #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy cluster #Physics #Planck #Quantum mechanics #Redshift #Sky #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1046/j.1365-8711.2002.05039.x
published as Mon.Not.Roy.Astron.Soc. 331 (2002) 556 · 14 pages, 10 figures. Submitted to MNRAS. Figs. 4 and 5 are bitmapped versions of the full resolution figures which can be found in http://www.ifca.unican.es/~diego/
arxiv created 2001/03/30 · openalex publication_date 2002/04/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We show how future measurements of the Sunyaev-Zel'dovich effect (SZE) can be used to constrain the cosmological parameters. We combine the SZ information expected from the Planck full-sky survey, N(S), where no redshift information is included, with the N(z) obtained from an optically identified SZ-selected survey covering less than 1 per cent of the sky. We demonstrate how with a small subsample (≈300 clusters) of the whole SZ catalogue observed optically it is possible to reduce the degeneracy among the cosmological parameters drastically. We have studied the requirements for performing the optical follow-up and we show the feasibility of such a project. Finally, we have compared the cluster expectations for Planck with those expected for Newton-XMM during their lifetimes. It is shown that, owing to its larger sky coverage, Planck will detect a factor of ∼5 times more clusters than Newton-XMM and also provide a larger redshift coverage.