Active Galactic Nuclei in
Clusters of Galaxies
Paul Martini (OSU)
AGN in clusters of galaxies are commonly invoked to explain the absence
of cold gas in cluster cores and the presence of giant cavities in the hot
intracluster medium. Yet although AGN appear to play significant roles
clusters, they appear to be substantially rarer in rich environments
in the lower-density field. I will present results from a sensitive and
comprehensive survey of eight low-redshift clusters that has
spectroscopically-confirmed the presence of a large AGN population.
survey has systematically quantified the AGN population in clusters for
the first time and discovered five times as many AGN in clusters as
expected from previous work. I will describe the spatial, kinematic,
host galaxy types of these cluster AGN and discuss their implications
cluster galaxy evolution and heating the intracluster medium.