NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-04-24 T03:40:25 PDT
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For refcode 2013MNRAS.428.3509E:
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NED Abstract

Copyright by Royal Astronomical Society. 2013MNRAS.428.3509E X-ray bright active galactic nuclei in massive galaxy clusters - I. Number counts and spatial distribution Ehlert, S.; Allen, S. W.; Brandt, W. N.; Xue, Y. Q.; Luo, B.; von der Linden, A.; Mantz, A.; Morris, R. G. Abstract. We present an analysis of the X-ray bright point-source population in 43 massive clusters of galaxies observed with the Chandra X-ray Observatory. We have constructed a catalogue of 4210 rigorously selected X-ray point sources in these fields, which span a survey area of 4.2 ^degree^^2^. This catalogue reveals a clear excess of sources when compared to deep blank-field surveys, which amounts to roughly 1 +/- 0.4 additional sources per cluster, likely active galactic nuclei (AGN) associated with the clusters. The excess sources are located within the overdensity radius r_500_, with the largest excess observed near the cluster centres. The average radial profile of the excess X-ray sources of the cluster is well described by a power law [N(r) ~ r^beta^] with an index of beta ~ -0.6. An initial analysis using literature results on the mean profile of member galaxies in massive X-ray-selected clusters indicates that the fraction of galaxies hosting X-ray AGN rises with increasing clustercentric radius, being approximately three times higher near r_500_ than in the central regions. This trend is qualitatively similar to that observed for star formation in cluster member galaxies. Key words: galaxies: active, galaxies: clusters: intracluster medium, X-rays: galaxies: clusters, X-rays: galaxies
Retrieve 44 NED objects in this reference.
Please click here for ADS abstract

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