1. Study of the Rapid Variability of the BL Lac Object MRK 421 in the Optical Range

   • A. Sukharev
   • M. Ryabov
   • I. Eglitis

   OriginalPaper 13 May 2022 Pages: 1 - 18

2. The Environmental Dependence of the Stellar Velocity Dispersion of Active Galactic Nucleus (AGN) Host Galaxies and Dependence of the Clustering Properties of AGN Host Galaxies on the Stellar Velocity Dispersion

   • Yong Xin
   • Xin-Fa Deng

   OriginalPaper 13 May 2022 Pages: 19 - 30

3. Circumstellar Properties of the Herbig Be Star HD 259431. I. Signatures of Magnetospheric Accretion

   • M. A. Pogodin
   • S. E. Pavlovskii
   • D. L. Gorshanov

   OriginalPaper 13 May 2022 Pages: 31 - 52

4. The Red Giants EK Eri and OU And as Probable Descendents of Ap-stars: A Search for Abundance Anomalies

   • L. S. Lyubimkov
   • S. A. Korotin
   • D. N. Baklanova

   OriginalPaper 13 May 2022 Pages: 53 - 74

5. Spottedness Activity of the Young Star TOI 1227 with a Planetary System from Lower Centaurus Crux OB Association (Musca)

   • I. S. Savanov

   OriginalPaper 13 May 2022 Pages: 75 - 80

6. Conservation Laws in Time-Dependent Radiative Transfer Problems

   • A. G. Nikhoghossian

   OriginalPaper 13 May 2022 Pages: 81 - 92

7. Compton Scattering in Plane Media: Polarization of Radiation and Azimuth Independence. I. Theory

   • D. I. Nagirner
   • S. I. Grachev

   OriginalPaper 13 May 2022 Pages: 93 - 114

8. Transition 2₁₂-3₀₃ May Help for Detection of Methylene in a Cool Cosmic Object

   • M. K. Sharma
   • S. Chandra

   OriginalPaper 13 May 2022 Pages: 115 - 125

9. Properties of Hot Quark Matter with Neutrino Confinement in the NJL Model

   • G. S. Hajyan
   • G. B. Alaverdyan

   OriginalPaper 13 May 2022 Pages: 126 - 136

10. Asynchronous Rotation of a Massive Star in Close Binary Systems

    • S. V. Chernov

    OriginalPaper 13 May 2022 Pages: 137 - 150