Probing the Hosts comma Environments comma and Physics of Young Radio Galaxies

We propose XMM EPIC observations of the GHz Peaked Spectrum (GPS) source2352+495 and the Compact Steep Spectrum (CSS) source 3C303.1. The proposedobservations will allow us to finally detect the GPS and CSS radio galaxies thusprobing the AGN and host galaxy properties of this key class of radio source. We will (1) compare their AGN and host galaxy Xray properties with those ofother radio galaxies studied by XMM; (2) constrain the ionization of theemission lines; (3) and test the evolving source model of Heinz et al (1998).A detection of the Xray emission from the shocked gas will prove that the radiosource is expanding supersonically in the ambient medium consistent with theevolution scenario and will also probe fundamental physics of the radio source. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]