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Interpreting the X-ray state transitions of Cygnus X-1โ˜…

Interpreting the X-ray state transitions of Cygnus X-1โ˜…

We present a novel method for interpreting observations of high-mass X-ray binaries (HMXBs) based on a combination of spectroscopic data and numerical results from a radiation hydrodynamic model of stellar winds. We calculate synthetic Doppler tomograms of predicted emission in low/hard and high/soft X-ray states and compare them with Doppler โ€ฆ