Obtained maps related to the non-thermal emission. Left: map of the norm of the power law component. Right: map of the photon index of the power law component in color overlaid on the map of the emission between 4 and 6 keV, associated with the synchrotron emission. The background image is corrected from the exposure map. The yellow line traces the outer contour of the ejecta and our regions (see Fig. 1). Some features are highlighted and described in the text (Sect. 4.7).