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Fig. 12.


Radio power versus X-ray luminosity (top) and spherically integrated SZ signal (bottom). The solid lines and shaded regions in both panels correspond to the scaling relations and given 95% confidence intervals reported by Cassano et al. (2013), respectively. For comparison, we report as a dashed line the scaling relation derived by Basu (2012) directly on the integrated SZ values Ysph(< 5r500). The data points are from Bîrzan et al. (2019), Di Gennaro et al. (2021), Cuciti et al. (2021b), and references therein, and correspond to galaxy clusters with clear identification of radio haloes (green circles) or non detections (gray circles). We note that many systems are not included in the top panel as there are no published values for their X-ray luminosities. For the Ysph(< 5r500) estimates, we consider the values from Planck SZ catalog (Planck Collaboration XXVII 2016) except for SPT-CL J2106-5844, for which we use the integrated SZ flux computed from the AdvACT measurement of its mass (Hilton et al. 2021). The solid and open red markers correspond to the X-ray luminosities measured including or excising the X-ray bright core, respectively. Although the X-ray luminosity of SPT-CL J2106-5844 (red square) is consistent with the expectation for the measured radio power, the cluster shows a large offset with respect to the radio power-integrated SZ effect relation. We caution that the constraint on the radio power from SPT-CL J2106-5844 does not imply a non-detection, but an upper limit to the contribution from a potential radio halo.

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