Potential origin of the state-dependent high-energy tail in the black hole microquasar Cygnus X-1 as seen with INTEGRAL

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Fig. 2.

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SPI exposure of Cyg X-1 in its soft state in units of 10⁶ cm² s⁻¹. The fully coded field of view of SPI is 16° ×16°. Green points indicate point sources that have to be taken into account in the SPI data analysis. Red points show other sources listed in the SPI catalog of Bouchet et al. (2011) but only seen below ≲100 keV or at specific flare times.

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