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Fig. 4.

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Optical Pan-STARRS (i filter) image of PSO J347.2702+48.7066, the host galaxy of FRB 20220912A, with contour levels representing the continuum radio source we detected at 1.26 GHz, with a 1.97″ × 1.77″ synthesised beam. Contours are drawn from three to six times the rms noise level σ ≃ 36 μJy beam−1. The white cross represents the position of APTF J23 radio source, with the cross extensions being the 1σ uncertainties on its centroid (Hewitt et al. 2024), while the blue cross indicates the position of FRB 20220912A localised at milliarcsecond angular resolution (Hewitt et al. 2024). The synthesised beam of our uGMRT observations is represented in the bottom left corner of the image as a white ellipse.

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