Searching for PWNe in three center-filled Supernova Remnants

Supernova Remnants of centerfilled and composite types often host young,energetic pulsars emitting strong relativistic winds. XMMNewton and Chandraobservations of such SNRs have already resulted in a number of pulsar andpulsarwind nebula (PWN) discoveries. We propose to observe three plerionicremnants located within a 7 kpc distance. The SNRs were selected based on theirradio morphologies and archival ROSAT data. We expect to expand the limitedsample of Xray bright PWNe suitable for detailed Xray studies. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]