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A study of spectra of Cyg X-3 observed by BeppoSAX

Abstract

We model the ~1-200 keV spectra of Cygnus X-3 observed by BeppoSAX. The continuum, modeled by Comptonization in a hybrid plasma, is modified by the strongly ionized plasma of the stellar wind of the Wolf-Rayet companion star. Discrete absorption and emission spectral features are modeled with XSTAR. The model has been applied to phase-resolved spectra in the hard and soft spectral states.Comment: 3 pages, to appear in the Proceedings of the Conference "X-ray Diagnostics of Astrophysical Plasmas", Cambridge, November 15-17, 2004. Replacement: minor changes in text and acknowledgement

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