Unfolded Epic-pn spectrum of IGR J18410-0535 during the interval O in Table 1. The best-fit model in Xspec here is phabs1*(pow1+Gauss+phabs2*pow2). The value of phabs1 was fixed in the fit to 1.8    ×    10²² cm^-2 and the photon index of the two power laws was forced to be the same (see Sect. 2.2 for details). The dashed line corresponds to the less absorbed power-law component in the fit, and the dot-dashed line to the more absorbed one. The dotted line indicates the iron line component at  ~ 6.4 keV. The bottom panel shows the residuals from the fit.