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Taschenbuch. Etat : Neu. Druck auf Anfrage Neuware - Printed after ordering - (Volume II).- Non-Jeans Instabilities of Gravitating Systems.- VI Non-Jeans Instabilities of Gravitating Systems.- ¿ 1. Beam Instability of a Gravitating Medium.- 1.1. Theorem of a Number of Instabilities of the Heterogeneous System with Homogeneous Flows.- 1.2. Expression for the Growth Rate of the Kinetic Beam Instability in the Case of a Beam of Small Density (for an Arbitrary Distribution Function).- 1.3. Beam with a Step Function Distribution.- 1.4. Hydrodynamical Beam Instability. Excitation of the Rotational Branch.- 1.5. Stabilizing Effect of the Interaction of Gravitating Cylinders and Disks.- 1.6. Instability of Rotating Inhomogeneous Cylinders with Oppositely Directed Beams of Equal Density.- ¿ 2. Gradient Instabilities of a Gravitating Medium.- 2.1. Cylinder of Constant Density with Radius-Dependent Temperature. Hydrodynamical Instability.- 2.2. Cylinder of Constant Density with a Temperature Jump. Kinetic Instability.- 2.3. Cylinder with Inhomogeneous Density and Temperature.- ¿ 3. Hydrodynamical Instabilities of a Gravitating Medium with a Growth Rate Much Greater than that of Jeans.- 3.1. Hydrodynamical Instabilities in the Model of a Flat Parallel Flow.- 3.2. Hydrodynamical Instabilities of a Gravitating Cylinder.- ¿4. General Treatment of Kinetic Instabilities.- 4.1. Beam Effects in the Heterogeneous Model of a Galaxy.- 4.2. Influence of a ¿Black Hole¿ at the Center of a Spherical System on the Resonance Interactions Between Stars and Waves.- 4.3. Beam Instability in the Models of a Cylinder and a Flat Layer.- VII Problems of Nonlinear Theory.- ¿ 1. Nonlinear Stability Theory of a Rotating, Gravitating Disk.- 1.1. Nonlinear Waves and Solitons in a Hydrodynamical Model of an Infinitely Thin Disk with Plane Pressure.- 1.2. Nonlinear Waves in a Gaseous Disk.- 1.3. Nonlinear Waves and Solitons in a Stellar Disk.- 1.4. Explosive Instability.- 1.5. Remarks on the Decay Processes.- 1.6. Nonlinear Waves in a Viscous Medium.- ¿ 2. Nonlinear Interaction of a Monochromatic Wave with Particles in Gravitating Systems.- 2.1. Nonlinear Dynamics of the Beam Instability in a Cylindrical Model.- 2.2. Nonlinear Saturation of the Instability at the Corotation Radiusin the Disk.- ¿ 3. Nonlinear Theory of Gravitational Instability of a Uniform Expanding Medium.- ¿ 4. Foundations of Turbulence Theory.- 4.1. Hamiltonian Formalism for the Hydrodynamical Model of a Gravitating Medium.- 4.2. Three-Wave Interaction.- 4.3. Four-Wave Interaction.- ¿5. Concluding Remarks.- 5.1. When Can an Unstable Gravitating Disk be Regarded as an Infinitesimally Thin One .- 5.2. On Future Soliton Theory of Spiral Structure.- Problems.- II Astrophysical Applications.- VIII General Remarks.- ¿ 1. Oort¿s Antievolutionary Hypothesis.- ¿ 2. Is There a Relationship Between the Rotational Momentum of an Elliptical Galaxy and the Degree of Oblateness .- ¿ 3. General Principles of the Construction of Models of Spherically Symmetric Systems.- ¿ 4. Lynden-Bell¿s Collisionless Relaxation.- ¿ 5. Estimates of ¿Collisionlessness¿ of Particles in Different Real Systems.- IX Spherical Systems.- ¿ 1. A Brief Description of Observational Data.- 1.1. Globular Star Clusters.- 1.2. Spherical Galaxies.- 1.3. Compact Galactic Clusters.- ¿ 2. Classification of Unstable Modes in Scales.- ¿ 3. Universal Criterion of the Instability.- ¿ 4. Specificity of the Effects of Small-Scale and Large-Scale Perturbations on the System¿s Evolution.- ¿ 5. Results of Numerical Experiments for Systems with Parameters Providing Strong Supercriticality.- ¿ 6. Example of Strongly Unstable Model.- ¿ 7. Can Lynden-Bell¿s Intermixing Mechanism Be Observed Against a Background of Strong Instability .- ¿ 8. Is the ¿Unstable¿ Distribution of Stellar Density Really Unstable (in the Hydrodynamical Sense) in the Neighborhood of a ¿Black Hole¿ .- X Ellipsoidal Systems.- ¿ 1. Objects Under Study.- ¿ 2. Elliptical Galaxies.- 2.1. Why Are Elliptical Galaxies M.…