A MeerKAT survey found the highest-redshift ultra-steep spectrum radio halo to date, in cluster SPT-CLJ2337-5942 at z=0.78.
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Discovery of a $z \sim 0.8$ Ultra Steep Spectrum Radio Halo in the MeerKAT-South Pole Telescope Survey
A MeerKAT survey found the highest-redshift ultra-steep spectrum radio halo to date, in cluster SPT-CLJ2337-5942 at z=0.78.