The interaction of twin-jet radio sources with their environments

The largescale structures of extragalactic radio sources are believed tobe determined largely by their environments of hot, Xray emitting gas. XMMis the first Xray observatory with sufficient sensitivity to allow a detailedstudy of this interaction. We have selected three nearby twinjet radio sourcesfrom the 3CRR sample, all of which are known to lie in groupscale hot gasenvironments and which show evidence in their radio structures for stronginteractions with the external medium. XMM observations will allow us to makedetailed maps of the clusters, relating their structure to the radio emission,and to look for the first time for the expected heating of the medium as aresult of expansion work done by the radio source. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]