Radio relic - merger connection in the clusters A548b and A1664

The clusters A548b and A1664 are peculiar in the radio domain because of thepresence of radio relics. According to theoretical models, the radio relics areenergized by cluster merger shocks. With this proposal we wish to investigatethe cluster Xray properties, the status of the intracluster medium, thepresence of shocks, filaments or cold fronts, in order to analyze the energytransfer between the thermal gas and the radio emitting particles. The study ofthe connection between the Xray and radio emission will be crucial tounderstand the formation of relics, and more generally of the nonthermalcomponents in clusters, and their relation to the cluster dynamics. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]