2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/11589The Coma cluster is peculiar in the radio domain owing to the presence of cluster-wide diffuse sources: the radio halo Coma C, the relic source 1253+275, and the bridge between them. Diffuse radio sources in clusters are a rare and poorly understood phenomenon. We summarize here the properties of the diffuse radio sources in Coma and their relation to other cluster properties.5 pages, 1 figure. File sprocl.sty included Contribution to the Rencontres Astrophysiques International Meeting "A New Vision of an Old Cluster: Untangling Coma Berenices", eds. F. Durret et al., held in Marseille, France 17-20 June 1997Astrophysicstext