Distribution of AGNs in galaxy clusters : J/MNRAS/392/1509


Authors : Gilmour R. orcid , Best P., Almaini O. (hide) , Best P., Almaini O. et..al

Bibcode : 2009MNRAS.392.1509G (ADS) (Simbad) (Objects) (hide)

CDS Keywords : Clusters, galaxy; Active gal. nuclei; X-ray sources
UAT : Galaxy clusters, Active galactic nuclei, X-ray sources

Observation (OC)

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Inserted into VizieR : 06-Oct-2009
Last modification : 08-Jul-2024

The distribution of active galactic nuclei in a large sample of galaxy clusters. (2009)

Keywords : galaxies active - galaxies: clusters: general - X-rays: galaxies - X-rays: galaxies: clusters

Abstract:We present an analysis of the X-ray point source populations in 182 Chandra images of galaxy clusters at z>0.1 with exposure time >10ks, as well as 44 non-cluster fields. The analysis of the number and flux of these sources, using a detailed pipeline to predict the distribution of non-cluster sources in each field, reveals an excess of X-ray point sources associated with the galaxy clusters. A sample of 148 galaxy clusters at 0.1<z<0.9 , with no other nearby clusters, shows an excess of 230 cluster sources in total, an average of ~1.5 sources per cluster. The lack of optical data for these clusters limits the physical interpretation of this result, as we cannot calculate the fraction of cluster galaxies hosting X-ray sources. ...(more)
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  • B/chandra : The Chandra Archive Log (CXC, 1999-)

                
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