Exploring the X-ray emission from the unique ms-Pulsar PSR 1937+21

PSR B1937+21 is among the top brightest MSPs. Previous observatories like BSAXand XTE, however, allowed only a coarse characterization of its emission. Itspulse profile is double peaked with narrow pulses which are phase aligned withthe giant radio pulses! Its spectrum is dominated by nonthermal emission.Timing analysis in different energy bands indicated that the pulsed emission isharder than suggested from phase integrated spectral fits. An unresolved virgul40% DCcomponent below 4 keV is indicated. PSR B1937+21 was for many years notobservable by XMM due to satellite orbit constrains. We propose to explore itsemission by performing a phase resolved spectral analysis in order to separatethe different spectral components suggested to be present in the pulsar emission. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]