ROSAT Observations of the Vela Pulsar
  The ROSAT HRI was used to monitor X-ray emission from the Vela Pulsar. Six observations span 2-1/2 years and 3 glitches. The summed data yield a determination of the pulse shape, and X-ray emission from the pulsar is found to be 12 % pulsed with one broad and two narrow peaks. One observation occurred 15 days after a large glitch. No change in pulse structure was observed and any change in X-ray luminosity, if present, was less than 3 %. Implications for neutron star structure are discussed. 
F.D. Seward (SAO), M. A. Alpar (Middle East Technical University), C.   Flanagan (Hartebeesthoek Radio Observatory), U. Kizi...