Fig. 6.
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Radio luminosities at 144 MHz of newly discovered quasars in this work compared to the literature sample of known high-z quasars detected in LoTSS-DR2. Other known z > 6 radio-loud quasars PSO J172+18 (Bañados et al. 2021) and VIK J2318−3113 (Ighina et al. 2021) remain non-detected and not covered by LOFAR, respectively. PSO J0309+27 (Belladitta et al. 2020) and COS-87259 (Endsley et al. 2022b) are detected by LOFAR outside of the LoTSS-DR2 area.
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