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Fig. 1

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The HESS J1303−631 VHE γ-ray excess map, produced using hard cuts and the ring background method, was smoothed with a Gaussian kernel with σ = 0.05°. Coordinates are J2000.0. The high spin-down power pulsar, PSR J1301−6305, is indicated with a green star to the northwest of HESS J1303−631. The point source, associated to the pulsar PSR B1259−63, is seen in the bottom of the FoV. The size of the H.E.S.S. PSF, also smoothed with a Gaussian kernel with σ = 0.05°, is shown in the white box to the lower left. The blue/red transition occurs at a detection significance of  ~5σ.

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