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Fig. 5


Contours for the high energy cut-off and photon index for all the NuSTAR observations in the top left panel. These contours account for the data analysed with xillver and above 4 keV. The best-fit parameters are shown in Table 3. Top right plot:best-fit values for the reflection fraction as a function of the photon index for the various observations. The contours are computed on the NuSTAR data above 4 keV adopting the model with xillver. Bottom left panel: contour plots for the photon index and hot electron temperature computed on the NuSTAR data above 4 keV with xillvercp. Last panel: contour plots for the warm corona parameters for all the observations of our campaign.

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