I am an expert in the study of big black holes – those that lie at the centres of massive galaxies. I use a combination of X-ray (e.g. Chandra, XMM-Newton, Rosat), radio (e.g. JVLA, GMRT, ATCA) and optical observations (e.g. HST, VLT) for my work. The ultimate goal of my research is to provide a detailed view on the role black hole feedback plays in the formation and evolution of galaxies, from heating to metal entrainment, as well as black hole growth. Other topics I work on include observational signatures of radio halos in cluster mergers, hyper-luminours infrared galaxies, numerical simulations of jets, and compact objects in general.