LOFAR image at 144 MHz of A2255 obtained with a lower uvcut of 2000λ (rms = 55 μJy beam⁻¹, resolution 10.3″ × 6.6″). Inner and outer dashed circles show R₅₀₀ = 1.196 Mpc and R₂₀₀ = 2.033 Mpc, respectively. The blue boxes point out the seven galaxies analyzed in this work and shown in the seven small panels. The box size in the large panel corresponds to the FOV of the corresponding galaxy panel.