MACS J1149 radio maps at high resolution. In all the panels, the white contour levels are [ ± 3,  6,  12, …]×σ. The dashed yellow contour indicates the 3σ (with σ ∼ 0.30 mJy beam⁻¹) level of the 30″ × 30″ resolution LOFAR map after the subtraction of the embedded sources (see also Fig. 6). Top left: 144 MHz LOFAR map at 10″ × 6″ resolution (P.A. = 81° , σ ∼ 0.15 mJy beam⁻¹). The western source ‘L’ has recently been reclassified as a radio galaxy. The SE relic is labelled as ‘J’ and a bridge-like structure links it to the source ‘K’. Top right: 1.5 GHz JVLA (B, C, D arrays combined) map at 5″ × 4″ resolution (P.A. = 16^o,  σ ∼ 18 μJy beam⁻¹) showing the discrete sources embedded in the radio halo. Bottom left: zoom of the above LOFAR image on the two extended sources ‘B’ (head-tail radio galaxy) and ‘C’. Bottom right: zoom of the above JVLA image on the radio galaxy ‘L’ showing its FRI morphology.