Fig. 1.
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Radio imaging and spectral data for 3C 223.1. (a) LoTSS DR2 144 MHz radio contours (levels: 0.0085, 0.0097, 0.0134, 0.0213, 0.0384, 0.0754, 0.1549, 0.3263, 0.6955, and 1.4909 Jy beam−1) of the 6″ map overlaid on PanSTARRS r band image. (b) Integrated spectral index fit from 144 to 10 700 MHz. (c) Three frequencies (144, 4910, and 8350 MHz) spectral index map and error map (d) of 3C 223.1. The beam of 20″ × 20″ is shown at the bottom right corner. The host galaxy location is shown by the black marker.
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