Fig. 9.
Low (144 − 235 MHz) and high (144 − 1400 MHz) frequency spectral index maps at a resolution of 28″ × 28″ with LOFAR contours at the same resolution overlaid. The beam is shown in the bottom left corner. Pixels with values below 5 and 3σ were blanked in the low- and high-frequency spectral index maps, respectively. The error maps are shown in Appendix B.
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