Left: MACS J1149 X-ray map obtained with Chandra in the 0.5–3 keV band (1 pix = 4″). The region within R₅₀₀ is indicated in yellow and cyan circles label the location of the three sub-clusters, as reported by Golovich et al. (2016). The cluster is elongated along NW-SE. Sub-cluster 1 is associated with the main X-ray concentration, whereas no clumps associated with sub-cluster 2 are clearly visible. Right: X-ray surface brightness profile. Data are fitted by a β-model (blue line) with β = 0.66 ± 0.01 and r_c = 288 ± 8 kpc.