Fig. 2
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Total intensity (I) image and contours of G315.4-2.3 at 2.2 GHz from averaging all the frequency channels. The contour levels are at 20.5n × 5σI, n = 0,1,2,... The rms noise is σI = 0.6 mJy beam−1. The resolution is 62″ × 33″. The red dashed lines mark the four regions for which the spectral indices were derived and are shown in Fig. 4.
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