Fig. 5
Intrinsic hard X-ray luminosity as a function of redshift for X-ray detected z > 5.7 quasars. SDSSJ08 lies at the X-ray luminous end of the sample. The luminosity of SDSSJ08 is computed from the eROSITA data. eROSITA detected sources are marked by an empty square. In the case of overlapping sources in the sample of Nanni et al. (2017) and Vito et al. (2019), only the data points from the latter are shown.
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