Unfolded absorbed broad-band spectrum of IGR J17591−2342 in the 0.3–150 keV energy range (left panel). The data points are obtained from the two XMM-Newton RGS instruments (yellow and magenta datapoints, ∼0.33–2.1 keV), XMM-Newton EPIC-pn (green points, 1.5–12 keV), XMM-Newton EPIC-MOS2 (cyan points, 0.5–10 keV), NuSTAR FPMA/FPMB (red and blue points, 3.5–80 keV), and INTEGRAL-ISGRI (black points, 30–150 keV). The fit is obtained with the COMPPS model, represented in the top panel with a solid black line. The residuals from the best fit are shown at the bottom. The right-hand panel shows the correlation between N_H and kT_BB in the COMPPS model: two minima co-exist. The contours encompassing the minima denote the 1, 2, and 3σ confidence levels assuming 2 degrees of freedom (DOF), while the others are labeled with their corresponding χ²-value (note: the DOF is 910).