Surface brightness maps of the A3266 cluster. Top panel: Manually selected regions following the fractional difference in 0.5–2 keV X-ray surface brightness. Green circles correspond to point-like sources excluded from the analysis. Bottom panel: Velocities obtained for manually selected regions following the A3266 merging structure. The A3266 redshift is indicated with a horizontal line. The spectral fitting was done in the 4 − 9.25 keV energy range. We have also included the mean optical redshift for galaxies from Dehghan et al. (2017) within each one of the regions obtained.