Discovery of the most X-ray luminous quasar SRGE J170245.3+130104 at redshift z$\approx 5.5$

G. A. Khorunzhev, A. V. Meshcheryakov, P. S. Medvedev +10

SRGE J170245.3+130104 was discovered by the eROSITA telescope aboard the SRG space observatory on March 13-15, 2020 during the first half-year scan of its all-sky X-ray survey. The…