Top panel: 5.5 GHz map (UNIFORM) at a resolution of 2′′.8 × 2′′.7 with rms noise of 16.1 μJy beam-1. Middle panel: 5.5 GHz map (ROBUST 0) at a resolution of 3′′.2 × 2′′.8 with rms noise = 8.0 μJy beam-1. Bottom panel: 5.5 GHz map (NATURAL, UVTAPER = [0,20]) at a resolution of 4′′.9 × 4′′.4 with rms noise = 8.6 μJy beam-1. In all panels the white contour levels are –3, 3, 6, 12, 24 × rms noise, the red ones are the 7, 14 × rms of 1.4 GHz maps produced with comparable resolution from G13 data. The rms levels of the red contours are 15.4 and 21.9 μJy beam-1 in the middle and bottom panel, respectively.
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