AGN Feedback in groups of galaxies Somak Raychaudhury University of Birmingham Most galaxies in the Universe live in small groups, and it is in this environment that much of their evolution takes place. Much of the research in the field, however, has concentrated on rich clusters, and the assumption is often made that groups are scaled-down clusters, and the same physical processes are important in both scales. This talk will aim to show how the environment in groups is qualitatively different from that in clusters by looking at the effect of AGN feedback. In particular, I will discuss how low frequency (<1 GHz) GMRT radio observations of galaxy groups, in conjunction with X-ray observations from Chandra and XMM-Newton, can provide a unique insight into the present and past interaction of active nuclei and the intergalactic medium in groups and poor clusters of galaxies.