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Stability of Collisionless Stellar Systems : Mechanisms for the Dynamical Structure of Galaxies

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概要 Recent advances in our understanding of instabilities in galactic type systems have led to an unravelling of some of the mysteries of what determines the form galaxies take. This book focuses on the m...athematical development of the subject, assuming no prior knowledge of it, with a strong emphasis on the underlying physical interpretation. This framework is used to discuss the most relevant instabilities which are believed to be closely involved in the way galaxies are formed, in a model independent manner. The relevant observed properties of galaxies that may be used to establish the role of these physical mechanisms are discussed. The book also includes a chapter discussing numerical simulation techniques, with attention paid to their limitations and to recent advances in this approach. It is demonstrated that recent developments in computer hardware enable a detailed comparison of simulations with analysis. Thus the simulations extend our physical understanding beyond the limitations of the analysis. The book is intended for use by postgraduate students and researchers in the areas of cosmology, extragalactic astronomy and dynamics.続きを見る
目次 1 Introduction
2 Description of the Orbital Motions
3 General Perturbation Theory
4 Constructing Equilibrium Models
5 Non-Rotating Spherical Systems
6 Isotropic Systems
7 Anisotropic Spherical Systems
8 Spherical Systems with Rotation
9 Axisymmetric Systems
10 Numerical Modelling Techniques
11 Non-Linear Evolution and Endstates
12 Disc Galaxies
A Setting up N Body Datasets
A.1 Generalised Polytropes with a Central Point Mass
B Spherical Harmonic Addition Theorem
C Expansion of Spherical Harmonics in Orbital Parameters
C.1 Orthogonality Relations
D The Poisson Operator for Axisymmetric Discs
D.1 The Poisson Operator for General Non-Axisymmetric Perturbations
References.
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登録日 2020.06.27
更新日 2020.06.28