XMM-Newton/MOS image of the 0.5−6 keV flux, adaptively smoothed to a signal-to-noise ratio of 15 (using asmooth from the SAS software) with all the detected point sources, except PSR J1357−6429, removed. Small-scale structures close to PSR J1357−6429 are better revealed in the inset image with a colour scale ranging from 0 to 8  ×  10^-5 ph cm^-2 s^-1 arcmin^-2. The solid white contours denote the levels of the H.E.S.S. correlated significance, while the black contours correspond to the ROSAT/PSPC smoothed excess count rates. The yellow dashed circle shows the source region used for spectral extraction, as in Fig. 4.