Fig. 13.
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Spectral energy distribution associated with the hard/low state of Cygnus X-1. The plotted observational data include the IR and radio emission points up to 1 eV Persi et al. (1980) as P80, Fender et al. (2000) as F00), the soft and hard X-ray emission detected by BeppoSAX and INTEGRAL (Di Salvo et al. 2001; Zdziarski et al. 2012), and the gamma-ray measurements and upper limits by COMPTEL, Fermi-LAT, and MAGIC (McConnell et al. 2002; Malyshev et al. 2013; Ahnen et al. 2017).
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