Detection of X-ray galaxy clusters based on the Kolmogorov method

被引：1
作者：
Gurzadyan, V. G. [1 ,2 ]
Durret, F. [3 ,4 ]
Ghahramanyan, T. [1 ,2 ]
Kashin, A. L. [1 ,2 ]
Khachatryan, H. G. [1 ,2 ]
Poghosian, E. [1 ,2 ]
机构：
[1] Alikhanian Natl Lab, Yerevan, Armenia
[2] Yerevan State Univ, Yerevan 375049, Armenia
[3] Univ Paris 06, UMR 7095, Paris, France
[4] Inst Astrophys, F-75014 Paris, France
来源：
EPL | 2011年 / 95卷 / 06期
关键词：
XMM-NEWTON;
D O I：
10.1209/0295-5075/95/69001
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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. Copyright (C) EPLA, 2011
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页数：4
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