Low-resolution (29″ × 26″) LOFAR contours overlaid on the Chandra image. Contours are spaced by a factor of 2 starting from 3σ, where σ = 255 μJy beam⁻¹. The beam is shown in the bottom left corner. The dashed yellow arc marks the position of the cold front traced by the X-ray surface-brightness discontinuity of Fig. 4 while the white cross denotes the center of the circular model shown in Fig. 11.