The correlation function of flux-limited X-ray clusters
نویسندگان
چکیده
منابع مشابه
The Correlation Function of Flux-limited X-ray Clusters
We show that the spatial correlation function of a flux-limited sample of Xray selected clusters of galaxies will exhibit a correlation scale that is smaller than the correlation scale of a volume-limited, richness-limited sample of comparable apparent spatial density. The flux-limited sample contains clusters of different richnesses at different distances: poor groups are found nearby and rich...
متن کاملTwo-point correlation functions of X-ray selected clusters of galaxies: theoretical predictions for flux-limited surveys
We have developed a model to describe two-point correlation functions of clusters of galaxies in X-ray flux-limited surveys. Our model properly takes account of nonlinear gravitational evolution of mass fluctuations, redshift-space distortion due to linear peculiar velocity field and to finger-of-god, cluster abundance and bias evolution on the basis of the Press – Schechter theory, the light-c...
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We present a model to predict the clustering properties of X-ray selected clusters in flux-limited surveys. Our technique correctly accounts for past lightcone effects on the observed clustering and follows the non-linear evolution in redshift of the underlying dark matter correlation function and cluster bias factor. The conversion of the limiting flux of a survey into the corresponding minimu...
متن کاملThe correlation function of X-ray galaxy clusters in the RASS1 Bright Sample
We analyse the spatial clustering properties of the RASS1 Bright Sample, an X-ray flux-limited catalogue of galaxy clusters selected from the southern part of the ROSAT All-Sky Survey. The two-point correlation function ξ(r) of the whole sample is well fitted (in an Einstein-de Sitter model) by the power-law ξ = (r/r0) −γ , with r0 = 21.5 +3.4 −4.4 h −1 Mpc and γ = 2.11 −0.56 (95.4 per cent con...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1994
ISSN: 0004-637X,1538-4357
DOI: 10.1086/187328