ИСТИНА

SRG/eROSITA telescope observed Her X-1/HZ Her binary system in multiple scans over the source during the first and second SRG all-sky surveys. The observations occurred during a low state of the X-ray source when the neutron star was screened by the outer parts of the accretion disk. For the first time, orbital modulation of the X-ray flux was detected during the low state. We argue that the detected X-ray radiation results from scattering of the emission of the central source by three different regions: (a) an optically thin hot corona with temperature 2-4 10^6 K above the irradiated hemisphere of the optical star; (b) an optically thin hot halo above the accretion disk; (c) an optically thick cold atmosphere of the optical star. The latter region effectively scatters photons with energies above 5-6 keV.