Open AccessFuture Galaxy Cluster Surveys: The Effect of Theory Uncertainty on Constraining Cosmological Parameters
Author(s) -
E. S. Levine,
Alexia Schulz,
Martin White
Publication year - 2002
Publication title -
the astrophysical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.376
H-Index - 489
eISSN - 1538-4357
pISSN - 0004-637X
DOI - 10.1086/342119
Subject(s) - physics , cosmic microwave background , normalization (sociology) , astrophysics , cluster (spacecraft) , prior probability , tully–fisher relation , galaxy cluster , statistical physics , cutoff , cosmology , parameter space , cosmic cancer database , galaxy , theoretical physics , bayesian probability , statistics , galaxy formation and evolution , mathematics , quantum mechanics , computer science , anisotropy , sociology , anthropology , galaxy rotation curve , programming language
Using the Fisher matrix formalism, we quantitatively investigate theconstraints on a 10 dimensional space of cosmological parameters which may beobtained with future cluster surveys. We explore the dependence of the Omega_mconstraint on both angular coverage and depth of field. We show that in eachcase there is a natural cutoff beyond which the constraints on Omega_m do notsignificantly improve. We also investigate the sensitivity of the constraintsto changes in our knowledge of the Mass-Temperature (M-T) relation by includingits normalization and scatter as two of the parameters in the Fisher matrix. Tomake our analysis more realistic, we have added, as priors, the Fisher matricesfrom hypothetical supernova and CMB experiments. We find that X-ray clustersurveys actually help to constrain the M-T relation, and explore theimplications of this result.Comment: 10 pages, 7 figure
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