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.