Radio observations of the XMM-Newton/Chandra 13hr deep survey field

Our VLA observations of the XMM‐Newton/Chandra 13hr deep survey field (see Page et al., this proceedings) result in one of the two deepest 1.4GHz radio maps ever made. Within the 15′ radius field covered by the deep X‐ray data (0.19 deg2 ), a total of 556 radio sources are detected, down to a 4σ flux limit of 28μJy. Of the 214 Chandra sources, 55 have radio counterparts. The sub‐arcsecond accuracy of the VLA and Chandra positions enable us to determine with high confidence the sources common to both surveys. Here we present the relationship between the X‐ray and radio source populations at the faintest radio flux limits yet probed by such a study. We discuss how the X‐ray/radio relationship differs as a function of optical morphology, ie between unresolved ‘stellar’ objects and well resolved galaxies. We then discuss the origin of the X‐ray and radio emission, ie AGN, starburst or a mixture of both, in these two classes of object.