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Spectroscopic Redshift Measurements for Galaxy Clusters Detected in the Planck All-Sky Survey observations of these galaxy clusters have been carried out with the 1.5-m Russian–Turkish telescope (RTT150

Optical Identifications of Galaxy Clusters Among Objects from the Second Planck Catalogue of Sunyaev–Zeldovich Sources-Zeldovich sources. We used the data of observations with the 1.5-m Russian-Turkish telescope (RTT150), the 1.6-m

Observation of a Very Massive Galaxy Cluster at z = 0.76 in the SRG/eROSITA All-Sky Survey–Zeldovich effect. The spectroscopic redshift has been measured at the 6-m BTA telescope, z=0.7573. In addition

The First Distant X-ray Quasars (z ~ 4) among the Sources Discovered by the eROSITA Telescope of the SRG Orbital Observatory during a Deep Lockman Hole Survey. The spectroscopic observations of the first two candidates from this list carried out with the 1.6-m AZT-33IK

Spectroscopic Redshift Measurements for Galaxy Clusters from the Planck Survey and Observations of These Clusters in the SRG/eROSITA Survey out during 2019–early 2020 at the 1.6-m AZT-33IK telescope of the Sayan Observatory and the 1.5-m

Optical Identification of Candidates for Active Galactic Nuclei Detected by the Mikhail Pavlinsky ART-XC Telescope Onboard the SRG Observatory during an All-Sky X-ray Survey catalogue of X-ray sources detected in the 4–12 keV energy band by the Mikhail Pavlinsky ART-XC telescope

First tidal disruption events discovered by SRG/eROSITA: X-ray/optical properties and X-ray luminosity function at z < 0.6. The X-ray spectra are consistent with nearly critical accretion on to black holes of a few ×103 to 108M

Full orbital solution for the binary system in the northern Galactic disc microlensing event Gaia16aye is composed of two main-sequence stars with masses 0.57 ± 0.05 M? and 0.36 ± 0.03 M? at 780 pc

Current rabies epizootiology

Poster: Intensive learning technologies as a trend in education digitalization

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