Left panel: error-circle (dash-dotted) associated with the 3FGL source. Right panel: high-energy 3−500 GeV TS map, integrating over 7 yr of Fermi-LAT observations. The contour black dashed lines are TS surfaces representing 68%, 95% and 99% containment region for the γ-ray signature (from inner to outer lines). The 2WHSP J183806.7-600032 (thick green circle centered on +). The 3FGL J1838.5-6006 position is shows in cyan (centered on ×), ≈6.9′ away from the high-energy TS peak.