Pulse Searches of Two Radio Quiet GeV Pulsars Associated with TeV Sources

There are several likely gammaray pulsars in EGRET error boxes which areprobably associated with known TeV sources, but radio searches have failed todetect pulsations from them. Direct searches for gammaray pulsations of thebrightest EGRET sources using Fermi are proving quite successful. However, tounderstand the emission mechanisms, pulsations at other wavelengths arecritical. Here we propose XMMNewton studies of two such sources: GeV J18251310(the Eel) and GeV J1907+0557, with the primary goal of detecting Xraypulsations using the PN in small window mode. Both have extended Xray nebulawhose spatial and spectral properties will be studied using the MOS imagers. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]