Radio emission in clusters - problems and opportunities

The emission of radio sources in clusters of galaxies is examined in a theoretical review, with a focus on the effects of the cluster environment on the observable properties of the source. Particular attention is given to the energy source in AGN, the possible role of galaxy interactions, propagation dynamics, the need for more information on the dynamical state of the intracluster medium, relativistic particle acceleration and losses, cluster halos and steep-spectrum sources, inverse Compton scattering, Thomson scattering, and Faraday rotation. 41 references