The phase of the radio and X-ray pulses of PSR B1937+21

  title={The phase of the radio and X-ray pulses of PSR B1937+21},
  author={G Cusumano and W. Hermsen and Michael Kramer and Lucien Kuiper and O. Lohmer and Enrico Massaro and T. Mineo and Luciano Nicastro and Ben W. Stappers},
  journal={arXiv: Astrophysics},
Abstract We present some results of an RXTE observation on PSR B1937+21, the fastest known millisecond pulsar (P≃1.56 ms). The pulse profile, detected up to ∼20 keV, shows a double peak, with the main component much stronger than the other. The peak phase separation is 0.526±0.002 and the pulsed spectrum over the energy range 2-25 keV is well described by a power law with a photon index equal to 1.14±0.07. We find that the X-ray pulses are closely aligned in phase with the giant pulses observed… 

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