TS maps computed by pointlike. The green crosses show the sources of the 2FGL catalog included in the model, whereas the blue X represents the source we added to the model. The green contours show the H.E.S.S. data (Aharonian et al., 2008). The magenta circle gives the position of PSR J1856+0245. Top: TS map obtained between 10 and 300 GeV. The position of the Fermi-LAT excess is consistent with that of H.E.S.S. Note that HESS J1857+026 is not included in the model. Middle: TS map obtained between 0.1 and 1.3 GeV, showing the residual excess taken into account in our model. Bottom: residual TS map obtained between 10 and 300 GeV when all sources are included.