Radio images of the outer radio lobes in A496. (a): GMRT image at 330 MHz (grayscale and contours). The image has been restored with a 12″ circular beam and the noise is 1σ = 0.5 mJy/beam. (b): GMRT combined image at 150 MHz (grayscale and contours). The restoring beam is 24″ × 18″, in PA 0° and 1σ = 10 mJy/beam. In both panels, contours are spaced by a factor of 2 starting from +3σ. No contours at −3σ are present in the portion of the image shown. The boxed ellipse or circle shows the beam size. The magenta box marks the area occupied by the inner double source (see Fig. 2a). The white cross marks the optical peak (Fig. 1).