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Fig. 1.
Radio continuum emission at 144 MHz, presented as contours on an SDSS image, at 19.6 × 17.5 arcsec2 FWHM resolution. Contours start at a level of 3σ (390 μJy beam−1), increasing by a factor of 2. The size of the synthesised beam is shown in the bottom left corner in white.
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