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Fig. 2.

image

Radio power at 1.4 GHz versus the X-ray luminosity inside R500 (taken from Piffaretti et al. 2011,and converted into the 0.5–2.0 keV band) for the mini-halo sample. The red solid line is the best-fit relation (see Eq. (1)), enclosed by the 1σ confidence lines (red dashed). The clusters belonging to the HIFLUGCS sample are highlighted with red stars.

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