Fig. 1.
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Statistical significance of the H.E.S.S. excess counts with energies higher than 0.8 TeV above the background of nearly isotropic cosmic rays (indicated by the colour scale) before statistical trials were accounted for. The 68% containment region of the H.E.S.S. PSF is denoted with a white circle (left). The map was derived using a maximum likelihood test for a Gaussian kernel of radius 0.06°, which resulted in smoothing. The scale resulting from the combination of the PSF and this kernel is shown with another white circle (right).
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