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We present a comprehensive spectral analysis of the high mass X-ray binary(HMXB) pulsar Centaurus X-3 with the Suzaku observatory covering nearly oneorbital period. The light curve shows the presence of extended dips which arerarely seen in HMXBs. These dips are seen up to as high as ~40 keV. The pulsarspectra during the eclipse, out-of-eclipse, and dips are found to be welldescribed by a partial covering power-law model with high energy cut-off andthree Gaussian functions for 6.4 keV, 6.7 keV, and 6.97 keV iron emissionlines. The dips in the light curve can be explained by the presence of anadditional absorption component with high column density and covering fraction,the values of which are not significant during the rest of the orbital phases.The iron line parameters during the dips and eclipse are significantlydifferent compared to those during the rest of the observation. During thedips, the iron line intensities are found to be lesser by a factor of 2--3 withsignificant increase in the line equivalent widths. However, the continuum fluxat the corresponding orbital phase is estimated to be lesser by more than anorder of magnitude. Similarities in the changes in the iron line flux andequivalent widths during the dips and eclipse segments suggests the dippingactivity in Cen X-3 is caused by obscuration of the neutron star by densematter, probably structures in the outer region of the accretion disk, as incase of dipping low mass X-ray binaries.

X-ray Spectroscopy of the High Mass X-ray Binary Pulsar Centaurus X-3 over its Binary Orbit