Fig. 11
Left: LOFAR LBA – WSRT spectral index map between 63 and 351 MHz. Total intensity contours at 351 MHz are shown at levels of [1,2,4,8,...] × 1.0 mJy beam-1. The 351 MHz image is taken from Brentjens (2008). Right: spectral index error map. The map is computed on the basis of the σrms values for the individual maps and the reported flux calibration uncertainty of 10%.
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