XMM-Newton EPIC observations of Her X-1
  We present spin-resolved X-ray data of the neutron star binary Her X-1. We find evidence that the Iron line at 6.4 keV originates from the same location as the blackbody X-ray component. The line width and energy varies over both the spin period and the 35 day precession period. We also find that the correlation between the soft and hard X-ray light curves varies over the 35 day period. 
G. Ramsay (1), S. Zane (1), M. A. Jimenez-Garate (2), J. W. den Herder   (3), C. J. Hailey (4) ((1) MSSL/UCL, (2) MIT Center...