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Fig. 2
Radio image of the halo in A523 (contours and gray scale) after subtraction of discrete sources. The HPBW is 65′′. The noise level is 0.04 mJy/beam. Contours are: –0.2, 0.2, 0.5, 1, 1.5, 3, 5 mJy/beam. Crosses indicate the peak position of subtracted sources.
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