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Fig. 4.
Left panel: 150 MHz LOFAR image (30″ × ″30) in which the contours show the (1, 2, 4, …)×3 × σLOFAR, 150 levels, where σLOFAR, 150 = 1.8 mJy beam−1. Right panel: 1.4 GHz VLA image (26″ × 14″) where the contours show the (1, 2, 4, …)×3 × σVLA, 1400 levels, where σVLA, 1400 = 40 μJy beam−1.
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