spectral index map. The restoring beam size is 50″ (bottom left). Overlaid in black are contours tracing the emission from the convolved LOFAR image (listed in Table 2) with levels at , where n = [0, 9] and σ = 3 mJy beam⁻¹. Inset are enlarged views of the lobes. Profile paths along which the spectral index values shown in Fig. 5 are measured are shown using dashed lines, as well as measurement regions of the spectral index values listed in Table 4 (solid labelled rectangles). Point sources embedded in the lobes have been masked.