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Title:
Chaos and complexity in astrophysics
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Publication Information:
Cambridge, UK : Cambridge University Press, 2006
ISBN:
9780521855341

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30000010123664 QB466.C45 R43 2006 Open Access Book Book
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Summary

Summary

The discipline of nonlinear dynamics has developed explosively in all areas of physics. This comprehensive primer summarizes the main developments in the mathematical theory of dynamical systems, chaos, pattern formation and complexity. An introduction to mathematical concepts and techniques is given in the first part of the book, before being applied to stellar, interstellar, galactic and large scale complex phenomena in the Universe. Regev demonstrates the possible application of ideas including strange attractors, Poincaré sections, fractals, bifurcations, and complex spatial patterns, to specific astrophysical problems. This self-contained text will appeal to a broad audience of astrophysicists and astronomers who wish to understand and apply modern dynamical approaches to the problems they are working on. It provides researchers and graduate students with the investigative tools they need to fully explore chaotic and complex phenomena.


Table of Contents

Prefacep. ix
Acknowledgementsp. xii
Part I Dynamical systems - generalp. 1
1 Introduction to Part Ip. 3
2 Astrophysical examplesp. 8
2.1 Stellar population dynamicsp. 8
2.2 One-zone model of a nonlinear stellar pulsatorp. 12
2.3 Stellar orbits in a model galactic potentialp. 21
2.4 One-element model of thermal convectionp. 28
2.5 Patterns in a thermally unstable mediump. 32
3 Mathematical properties of dynamical systemsp. 40
3.1 Local geometrical propertiesp. 42
3.2 Global attributes of dynamical systemsp. 71
3.3 Elements of bifurcation theoryp. 83
3.4 Dynamical systems near marginalityp. 93
3.5 Fractal sets and dimensionsp. 102
4 Properties of chaotic dynamicsp. 112
4.1 Strange attractorsp. 113
4.2 Sensitivity to initial conditionsp. 118
4.3 Fractal properties of chaotic motionp. 125
4.4 Transition to chaosp. 128
4.5 Bifurcations of homoclinic and heteroclinic orbitsp. 139
4.6 Theoretical predictive criteria of chaosp. 144
5 Analysis of time seriesp. 146
5.1 Time histories and Fourier spectrap. 148
5.2 The pseudo-state space and embeddingp. 158
5.3 The embedding dimension and the time delayp. 162
6 Regular and irregular motion in Hamiltonian systemsp. 168
6.1 Properties of Hamiltonian systemsp. 169
6.2 Integrable systemsp. 180
6.3 Nearly integrable systems and the KAM theoremp. 185
6.4 Chaos in Hamiltonian systemsp. 191
7 Extended systems - instabilities and patternsp. 201
7.1 Linear instabilitiesp. 205
7.2 General qualitative properties of pattern-forming systemsp. 209
7.3 Amplitude and envelope equationsp. 212
7.4 Phase equations and coherent structuresp. 221
7.5 Defects and spatio-temporal complexity in 1D systemsp. 227
7.6 Defects in multidimensional systemsp. 243
7.7 Coupled map latticesp. 251
Part II Astrophysical applicationsp. 255
8 Introduction to Part IIp. 257
9 Planetary, stellar and galactic dynamicsp. 260
9.1 The n-body problem - a historical notep. 262
9.2 Chaotic dynamics in the Solar Systemp. 267
9.3 Chaos and the evolution of tidal-capture binariesp. 299
9.4 The role of chaos in stellar and galactic dynamicsp. 305
10 Irregularly variable astronomical point sourcesp. 317
10.1 Observed aperiodic astronomical signalsp. 319
10.2 Nonlinear stellar pulsators - some specific modelsp. 328
10.3 A dynamical-system approach to stellar pulsationp. 332
10.4 Some models of accreting systemsp. 340
11 Complex spatial patterns in astrophysicsp. 347
11.1 Spatial structures in the interstellar mediump. 348
11.2 The large-scale structure of the Universep. 370
12 Topics in astrophysical fluid dynamicsp. 381
12.1 Basic concepts and equationsp. 383
12.2 Special flows and their propertiesp. 392
12.3 Hydrodynamical stabilityp. 404
12.4 Thermal convection and the Lorentz modelp. 422
12.5 Hamiltonian formulations and related topicsp. 431
Referencesp. 444
Indexp. 451