The MeerKAT massive distant clusters survey: A radio halo in a massive galaxy cluster at z = 1.23

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Table 1.

Properties of ACT-CL J0329.2–2330.

RA_J2000 (hh:mm:ss.ss)	03:29:16.54
Dec._J2000 (dd:mm:ss.ss)	−23:30:07.56
z	1.23
M_{500cCal, SZ} (10¹⁴ M_⊙)	9.7 $_{- 1.6}^{+ 1.7}$ $^{+1.7}_{-1.6}$
M_{500cUncorr, SZ} (10¹⁴ M_⊙)	8.0 $_{- 1.1}^{+ 1.3}$ $^{+1.3}_{-1.1}$
Signal-to-Noise ratio	22.1

Notes. SZ values are from the ACT DR5 catalogue (Hilton et al. 2021). M_{500cCal, SZ} is the ACT richness-based weak-lensing calibrated cluster mass (thought to be the best estimate of cluster mass). M_{500cUncorr, SZ} is the ACT cluster mass estimate assuming the Arnaud et al. (2010) scaling relation, without Eddington bias correction, which is used for comparison with masses in the Planck PSZ2 cluster catalogue.

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