Fig. 4: Comparison of the simulated photon spectra to Cyg X-1 observations.
From: Radiative plasma simulations of black hole accretion flow coronae in the hard and soft states

The bands show the minimum and maximum flux from the simulation during a time window t/t0 ∈ [3, 10], where t0 is the eddy turnover time. A simulation output with weak external photon flux (blue band; ℓext = 0.4) is compared to two hard-state observations (blue and cyan crosses; 1σ error bars). A second simulation with a high external photon supply (with ℓext = 6) is compared to two soft-state observations (red and orange crosses). The x-ray observations are performed by CGRO/BATSE and RXTE/ASM instruments as reported in7. The spectra are provided as a Source Data file.