Density profiles of AGN cluster members, separated in two cluster mass bins (left and right panels). Only AGNs with spectroscopic redshifts are included in the top panels, while photometric redshifts are also used in the bottom panels. The dashed line represents the AGN field density as calculated from 100 mock catalogues in each case. Open circles mark the results of the first bin split into two. Error bars indicate the 1σ confidence limits for small numbers of events (Gehrels 1986).