activity
20172026
most citedSRG/eROSITA uncovers the most X-ray luminous quasar at z>6

54 citations · 121 across the 8 of their papers we have counts for

collaborators
Showing 2025Show all

1 paper · 1 filter

astro-ph.HE2025

SRG/eROSITA-SDSS view on the relation between X-ray and UV emission for quasars

S. A. Prokhorenko, S. Yu. Sazonov, M. R. Gilfanov +5

Motivated by the idea of using quasars as standardizable candles for cosmology, we examine the relation between X-ray (at 2 keV, ) and ultraviolet (at 2500 Angstrom,…