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Detection of X-ray galaxy clusters based on the Kolmogorov method | | V. G. Gurzadyan
; F. Durret
; T. Ghahramanyan
; A. L. Kashin
; H. G. Khachatryan
; E. Poghosian
; | | Date: |
10 Jan 2012 | | Abstract: | The detection of clusters of galaxies in large surveys plays an important
part in extragalactic astronomy, and particularly in cosmology, since cluster
counts can give strong constraints on cosmological parameters. X-ray imaging is
in particular a reliable means to discover new clusters, and large X-ray
surveys are now available. Considering XMM-Newton data for a sample of 40 Abell
clusters, we show that their analysis with a Kolmogorov distribution can
provide a distinctive signature for galaxy clusters. The Kolmogorov method is
sensitive to the correlations in the cluster X-ray properties and can therefore
be used for their identification, thus allowing to search reliably for clusters
in a simple way. | | Source: | arXiv, 1201.1956 | | Services: | Forum | Review | PDF | Favorites | |
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