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Fig. 3.

image

EMU observation of SPT-CL J2106-5844 before (upper) and after (middle) subtracting the radio emission from the BCG, and comparison of the latter with the smoothed X-ray surface brightness (lower). The bright compact emission associated with the BCG (triangle marker; Song et al. 2012) is surrounded by an extended radio structure elongated in the same direction of the X-ray signal. In all panels, the EMU contours start at the 3σ level and increase by steps of 2σ (σ = 36 μJy beam−1; see Sect. 2.3). The synthesized beam is depicted in the bottom left corner of the lower panel. We note that the 18″ resolution is a consequence of the smoothing applied to make the resolution uniform across the entire EMU Pilot Survey.

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