Long Term X-ray Monitoring of the Double Pulsar PSR J0737-3039

Clear evidences of orbital phasedependent interactions between the two pulsarsof the relativistic double neutron star binary PSR J07373039 are seen both inradio and Xrays observations. In particular, XMM recently discovered the Xraybrightening of PSR B via energy transfer from PSR A, a process probablycorrelated with the strong radio intensity fluctuations of PSR B seen along theorbit. No other Xray observatory of the current generation (or foreseen withinthe next decade) will be able to yield better information, and considering thedisappearance of PSR B (March 2008) in the radio band, XMM offers the exclusiveopportuinity to monitor this evolving pulsar and its related neutron starsurface thermodynamics. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]