A CANDIDATE GAMMA-RAY PULSAR IN THE SUPERNOVA REMNANT CTA-1

We present a detailed analysis of the high-energy gamma-ray source 2EG J0008+7307. The source has a steady flux and a hard spectrum, softeni ng above 2 GeV. The properties of the gamma-ray source are suggestive of emission from a young pulsar in the spatially coincident CTA 1 supe rnova remnant, which has recently been found to have a non-thermal X-r ay plerion. Our 95 per cent uncertainty contour around the > 1 GeV sou rce position includes the point-like X-ray source at the centre of the plerion. We propose that this object is a young pulsar and is the mos t likely counterpart of 2EG J0008+7307.