A Comprehensive X-ray Study of W51B+C Complex

W51 is a Galactic radio complex consist of star forming regions (SFRs; W51A andW51B) and a supernova remnant (SNR; W51C). W51B and C are a particularly usefulopportunity for the study of the interaction between a supernova remnant andstarforming regions. We propose joint XMMNewton and Chandra observations ofW51B/C. XMMNewton will cover W51C where the large field of view and highthroughput of XMMNewton are ideal, while Chandra observation will cover W51Bwhere superb angular resolution of Chandra is necessary. Our joint program willbe effective to reveal the nature of the pulsar wind nebula, the origin of thecentral emission in SNR W51C, the origin of diffuse Xray emission in W51B, andthe starformation history of W51B. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]