Spectral properties of the X-ray binary pulsar LMC X-4 during different   intensity states
  We present spectral variations of the binary X-ray pulsar LMC X-4 observed with the RXTE/PCA during different phases of its 30.5 day long third period. Only out of eclipse data were used for this study. The 3-25 keV spectrum, modeled with high energy cut-off power-law and iron line emission is found to show strong dependence on the intensity state. Correlations between the Fe line emission flux and different parameters of the continuum are presented here. 
S. Naik and B. Paul (Tata Institute of Fundamental Research, Mumbai,   India.)