X-ray spectroscopy of the HMXB pulsar GX 301-2 with Chandra

Abstract

We present analysis of X-ray spectra of the accreting pulsar GX 301-2, from two observations with the Chandra X-ray observatory made during different phases of its orbital period. Analysis of the zeroth order ACIS spectra and the high energy resolution grating spectra show that the spectra obtained in both the orbital phases can be fitted with a partial covering power-law model. Strong K and K iron emission lines with finite width and iron absorption edges are present in both the spectra. In one of the observations we found another one broad emission component, probably formed by Compton scattering.