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We investigate the effect of environment on the presence and fuelling ofActive Galactic Nuclei (AGN) by identifying galaxies hosting AGN in massivegalaxy clusters and the fields around them. We have identified AGN candidatesvia optical variability (178), X-ray emission (74), and mid-IR SEDs (64) inmulti- wavelength surveys covering regions centered on 12 galaxy clusters atredshifts 0.5 < z < 0.9. In this paper, we present the radial distribution ofAGN in clusters to examine how local environment affects the presence of an AGNand its host galaxy. While distributions vary from cluster to cluster, we findthat the radial distribution of AGN generally differs from that of normalgalaxies. AGN host galaxies also show a different colour distribution thannormal galaxies, with many AGN hosts displaying galaxy colours in the "greenvalley" between the red sequence and blue star-forming normal galaxies. Thisresult is similar to those found in field galaxy studies. The colourdistribution of AGN hosts is more pronounced in disturbed clusters where minormergers, galaxy harassment, and interactions with cluster substructure maycontinue to prompt star-formation in the hosts. However, we find norelationship between host galaxy colour and cluster radius among AGN hosts.This may indicate that processes related to the accreting supermassive blackhole have a greater impact on the star-forming properties of the host galaxythan the intracluster medium and/or local galaxy environment.

A Multi-wavelength Survey of AGN in Massive Clusters: AGN Distribution and Host Galaxy Properties