XMM-Newton observations in the [0.5−2] keV X-ray band of Abell 1835 (left panel) and Abell 963 (right panel). The images are not background-subtracted and their diameter is 15′. The confirmed X-ray-detected AGNs are marked by black solid circles and the R₅₀₀ of the cluster by black dashed circle. The white dashed circles of diameter R₂₀₀ indicate the groups that are infalling into the clusters.