This article reviews recent studies of dynamics of disk-shaped galaxies with special
emphasis on their spiral structures. In a local version of kinetic stability theory, the very …

We present a detailed analysis of the properties of warps and tidally-triggered perturbations
perpendicular to the plane of 47 interacting/merging edge-on spiral galaxies. The derived …

We analyse the reaction between almost aperiodically growing Jeans-unstable gravity
perturbations and stars of a rotating and spatially inhomogeneous disk of flat galaxies. A …

As the observations of highly flattened galaxies, including the Milky Way, and gravitational N-
body simulations show, the central parts of these systems at distances of, say, r< 0.5–0.7 kpc …

Drift-resonant Landau excitation of spiral density waves in a stellar disk of flat galaxies is
proposed. This excitation of waves is suggested as a mechanism for the formation of …

A self-consistent system of the Boltzmann kinetic equation and the Poisson equation is used
to study the dynamical evolution of Saturn's main A, B and C rings composed of discrete …

This article reviews recent studies of morphology and dynamics of low and moderately high
optical depth regions of the Saturnian ring system of discrete mutually gravitating particles …

Linear theory is used to determine the stability of the self-gravitating, rapidly (and
nonuniformly) rotating, two-dimensional, and collisional particulate disk against small …

The reaction between aperiodically growing Jeans-type gravity perturbations and stars in a
rapidly rotating disk is analyzed with quasi-linear theory. The theory, applied to the solar …

Stellar discs of highly flattened giant galaxies, including that of the Milky Way, are studied by
linear theory to determine the stability of such discs against small-amplitude gravity …