X-RAY-RADIATION OF REMOTE RADIO GALAXIES FROM RC-CATALOG AND THE GEOMETRY OF THE UNIVERSE

It is proposed to use X-ray radiation of remote radio galaxies resulti ng from Compton scattering of photons of the 3K-background radiation b y relativistic gas in extended components of radio galaxies in order t o experimentally determine the geometry of the Universe. For 32 object s (photometric red shifts of most of them exceed unity) detected with RATAN-600 their expected X-ray radiation was estimated for all major m odels of the Universe. It is shown that large remote radio galaxies of this list can be observed even with existing X-ray telescopes.