The seeding of cosmic ray electrons by cluster radio galaxies: a review

Abstract

Radio galaxies in clusters of galaxies are prominent reservoirs of magnetic fields and of non-thermal particles, which get mixed with the intracluster medium. We review the observational and theoretical knowledge of the role of these crucial ingredients for the formation of diffuse radio emission in clusters (radio halos, relics, mini halos) and outline the open questions in this field.

arXiv comment20 pages, 5 figures. Accepted Review, in press in the Special Issue "Multi-Phase Fueling and Feedback Processes in Jetted AGN" (I. Prandoni & I. Ruffa editors) see https://www.mdpi.com/journal/galaxies/special_issues/A034OQPK44