English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Observational constraints on the average radial distribution profile of AGNin distant galaxy clusters can provide important clues on the triggeringmechanisms of AGN activity in dense environments and are essential for acompleteness evaluation of cluster selection techniques in the X-ray andmm-wavebands. The aim of this work is a statistical study with XMM-Newton ofthe presence and distribution of X-ray AGN in the large-scale structureenvironments of 22 X-ray luminous galaxy clusters in the redshift range 0.9 < z\lesssim 1.6 compiled by the XMM-Newton Distant Cluster Project (XDCP). To thisend, the X-ray point source lists from detections in the soft-band (0.35-2.4keV) and full-band (0.3-7.5 keV) were stacked in cluster-centric coordinatesand compared to average background number counts extracted from threeindependent control fields in the same observations. A significant full-band(soft-band) excess of \sim78 (67) X-ray point sources is found in the clusterfields within an angular distance of 8' (4Mpc) at a statistical confidencelevel of 4.0 sigma (4.2 sigma), corresponding to an average number of detectedexcess AGN per cluster environment of 3.5\pm0.9 (3.0\pm0.7). The data pointtowards a rising radial profile in the cluster region (r<1Mpc) of predominantlylow-luminosity AGN with an average detected excess of about one point sourceper system, with a tentative preferred occurrence along the main clusterelongation axis. A second statistically significant overdensity of brightersoft-band detected AGN is found at cluster-centric distances of 4'-6' (2-3Mpc),corresponding to about three times the average cluster radius R200 of thesystems. If confirmed, these results would support the idea of two differentphysical triggering mechanisms of X-ray AGN activity in dependence of theradially changing large-scale structure environment of the distant clusters.

AGN triggering in the infall regions of distant X-ray luminous galaxy clusters at 0.9 < z <~ 1.6