Left panel: XMM-Newton and NuSTAR broadband 0.5–24 keV unfolded spectrum of W1835 grouped at a minimum of five net-counts per bin for better visual representation. The black, red, and green thick solid lines are the best-fit MYTOR unfolded model (as reported in Table 1 and discussed in Sect. 3.2) for XMM-Newton-PN, NuSTAR-FPMA, and NuSTAR-FPMB, respectively. Data are reported in lighter colors. At low energy we omit the XMM-Newton-MOS best-fit model for clarity and report MOS and PN spectra with the same color. Right panel: corresponding best-fit theoretical model (thick solid black line) and subcomponents (discontinuous lines). The absorbed primary power-law, the reflection, and the scattered components are reported with dashed orange, dotted green, and dash-dotted blue lines. The magenta dashed line indicates the ionized Fe line.