A Search for Pulsars in EGRET Source Error Boxes

We are making accelerated progress in determining the nature of the persistent,highenergy gammaray sources in the Galaxy. Using the growing collection ofXray images of EGRET error boxes obtained by ROSAT, ASCA, and Chandra, severalyoung pulsars and pulsar candidates have been found that are very likelythe correct identifications of their coincident gammaray sources. The highthroughput of XMM is required to detect pulsations from the weak, hard Xraysources that we have selected as the best pulsar candidates in wellstudiedfields. In preparation for GLAST, we could add significantly to the populationof young, energetic gammaray pulsars, and study their systematic trends ofradiative efficiency and spectrum with spindown power and other parameters. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]