Fig. 2.
Images of the cluster A3888. Left: X-ray Chandra image (colours) with GMRT 33 MHz contours superimposed. Contours start from 0.9 mJy beam−1 and are spaced by a factor of two. The −0.9 mJy beam−1 contour is dashed. Right: same contours as in the left panel superimposed on the optical DSS image. Labels mark the position of discrete radio sources (A to D) and E indicates a patch of diffuse emission with no optical counterpart that we consider to be part of the halo.
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