Fig. 2
Crab photon spectrum. Black circles indicate the H.E.S.S. Crab nebula data taken in the nights from March 6 to March 10, 2013 with 1σ error bars on the flux in the respective bin. The black line and the grey shaded area are the fitted power law model and the corresponding 1σ error butterfly. The blue dashed line corresponds to the spectrum reported in Aharonian et al. (2006).
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