Variation in Emission and Absorption Lines and Continuum Flux by Orbital Phase in Vela X-1

Greg Goldstein, David P. Huenemoerder, David Blank

High resolution spectral studies were undertaken at orbital phases 0, 0.25 and 0.5 on the high-mass X-ray binary (HMXB) Vela X-1 using archival Chandra data. We present (a) the fir…