Discovery of the Most X-ray Luminous Quasar SRGE J170245.3+130104 at Redshift \(\boldsymbol{z\approx 5.5}\) G. A. KhorunzhevA. V. MeshcheryakovM. R. Gilfanov OriginalPaper 22 June 2021 Pages: 123 - 140
Spectroscopic Redshift Measurements for Galaxy Clusters from the Lockman Hole Survey with the eROSITA Telescope Onboard the SRG Observatory I. A. ZaznobinR. A. BureninR. A. Sunyaev OriginalPaper 22 June 2021 Pages: 141 - 149
Extended Emission of Cosmic Gamma-Ray Bursts Detected in the SPI-ACS/INTEGRAL Experiment G. Yu. MozgunovP. Yu. MinaevA. S. Pozanenko OriginalPaper 22 June 2021 Pages: 150 - 162
To the Globular Cluster Classification Problem. Calculating the Concentration of Stars for 26 Clusters S. N. NuritdinovI. U. TatjibaevA. S. Rastorguev OriginalPaper 22 June 2021 Pages: 163 - 169
The Dichotomy of the Mass-radius Relation and the Number of Globular Clusters Ahmed H. AbdullahPavel Kroupa OriginalPaper 22 June 2021 Pages: 170 - 174
Activity of the Star AB Pic with an Exoplanet from the Young Tuc–Hor Association I. S. Savanov OriginalPaper 22 June 2021 Pages: 175 - 179
Study of Close Stellar Encounters with the Solar System Based on Data from the Gaia EDR3 Catalogue V. V. BobylevA. T. Bajkova OriginalPaper 22 June 2021 Pages: 180 - 187
Analysis of Optimal Flight Trajectories to the Trans-Neptunian Object (90377) Sedna V. A. ZubkoA. A. SukhanovA. A. Belyaev OriginalPaper 22 June 2021 Pages: 188 - 195