Hydrodynamic and Spectral Simulations of HMXB Winds

Abstract

We describe preliminary results of a global model of the radiatively-driven photoionized wind and accretion flow of the high-mass X-ray binary Vela X-1. The full model combines FLASH hydrodynamic calculations, XSTAR photoionization calculations, HULLAC atomic data, and Monte Carlo radiation transport. We present maps of the density, temperature, velocity, and ionization parameter from a FLASH two-dimensional time-dependent simulation of Vela X-1, as well as maps of the emissivity distributions of the X-ray emission lines.

4 pages including 2 color encapsulated postscript figures; LaTeX format, uses ptptex.cls; submitted for inclusion in the proceedings of "The Extreme Universe in the Suzaku Era" conference, to be published in Progress of Theoretical Physics, Supplement.

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• NuSTAR detection of hard X-ray phase lags from the accreting pulsar GS 0834-430