Fig. 2

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Radio maps of A2061-A2067. Left panel: image of A2061-A2067 at a resolution of 8″ × 5″ (PA 90°). The imaging was done adopting a Briggs weighting scheme (Briggs 1995) with robust=−0.5, and the resulting rms noise is σrms = 80 µJy beam−1. The radio halo (white dashed circle) and the radio relic (magenta dashed circle) are already visible at high resolution and without compact source subtraction. The most interesting radio sources in the field are highlighted in the circles. Right panel: image of A2061-A2067 at a resolution of 80″ after subtraction of compact sources. The imaging was made by adopting a Briggs weighting scheme with robust=−0.5 and applying a Gaussian uv taper of 70″. We show the 2, 3, 5, 10 − σrms contour levels in white and the 20, 30 − σrms contours level in black (σrms = 0.4 mJy beam−1.) The −2σrms contours are shown by dashed red lines. Additionally to the radio halo and relic in A2061, we now detect diffuse emission in the NE extension (green dashed region) and trail (cyan dashed region).
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