H.E.S.S. energy flux spectrum. Upper panel: the black data points with statistical 1σ error bars are the energy spectrum of the full SNR RX J1713.7–3946, using an extraction radius of 0.6° centred on RA: 17^h13^m33.6^s, Dec: −39^d45^m36^s. The binning is chosen to match the energy resolution, requiring a minimum significance of 2σ per bin. The grey solid line shows the best-fit exponential cutoff power-law model, (2) from Table 3. The dashed red line shows the corresponding best-fit model from the previous H.E.S.S. publication (Aharonian et al. 2007). The experimental flux systematic uncertainty of −32%, described further in the main text, is indicated as a light red band. Lower panel: the residuals are shown including statistical and systematic uncertainties.