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Fig. 6.
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Spectral index map between the high resolution images of LOFAR at 144 MHz and uGMRT at 650 MHz of A1351 (left panel) and its error map (left panel), with resolutions of 7′′ × 7′′. The contour levels for LOFAR are set at (3, 6, 9, 12, 27, 41) × σrms, where σrms is 0.071 mJy/beam.
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