Vol. 49, No. 6, 2023

Astronomy Letters

Transient Events in the Circumnuclear Regions of AGNs and Quasars As Sources of Imitations of Proper Motions

I. M. Khamitov, I. F. Bikmaev, M. R. Gilfanov, R. A. Sunyaev, P. S. Medvedev, and M. A. Gorbachev p. 271 abstract

What Can We Learn about Compton-Thin AGN Tori from Their X-ray Spectra? *

F. Melazzini and S. Sazonov p. 301 abstract

Determination of the Spiral Pattern Speed in the Milky Way from Young Open Star Clusters

V. V. Bobylev and A. T. Bajkova p. 320 abstract

Determination of the Parameters of a Nonlinear Kinematic Galactic Rotation Model Based on the Proper Motions and Radial Velocities of Stars from the Gaia DR3 Catalogue

A. S. Tsvetkov and F. A. Amosov p. 331 abstract

Azimuthal Patterns in Planetesimal Circumstellar Disks

T. V. Demidova and I. I. Shevchenko p. 345 abstract

Contents

Astronomy Letters