Chaos in Astronomy: Conference 2007

ISBN-13: 9783540758259 / Angielski / Twarda / 2008 / 524 str.

G. Contopoulos; P. A. Patsis

Opis

The conference Chaos in Astronomy was held in Athens from 17 to 20 September 2007 and was dedicated to the memory of Nikos Voglis, who was directoroftheResearchCenterforAstronomyoftheAcademyofAthensuntil his death on 9 February 2007. It was attended by 73 registered participants coming from 18 di?erent countries. A total of 40 oral papers were delivered including a conference summary. Furthermore 16 posters were presented. The conference was the main event in a series of talks, public lectures and d- cussion meetings about "Chaos in Astronomy" that have taken place at the Research Center for Astronomy. We underline three special talks that have been given by D. Kazanas (NASA-Goddard Space Flight Center), D. Lynden- Bell (Cambridge, UK) and C. Tsallis (Brazilian Academy of Science). The main sponsor of the conference was the "Alexander S. Onassis" Fo- dation. In addition the conference has been supported by the General S- retariat for Research and Technology, the National Observatory of Athens, and the Hellenic Ministry of Culture. We are grateful to all sponsors for their generosity. We also express our gratitude to the Academy of Athens and to the - rectorship of the Biomedical Research Foundation, where the conference took place.

Spis treści

Galactic Dynamics.- Ordered and Chaotic Orbits in Spiral Galaxies.- Order and Chaos in Spiral Galaxies Seen through their Morphology.- The flow through the arms of normal and barred-spiral galaxies.- Ansae in Barred Galaxies, Observations and Simulations.- Orbital Structure in Barred Galaxies and the Role of Chaos.- Chaos in Galaxies.- Boxy/peanut bulges : formation, evolution and properties.- Invariant manifolds as building blocks for the formation of spiral arms and rings in barred galaxies.- Secular instabilities of stellar systems: slow mode approach.- Stellar Velocity Distribution in Galactic Disks.- Dynamical study of 2D and 3D barred galaxy models.- Chaos in the Mergers of Galaxies.- Hamiltonian Normal Forms and Galactic Potentials.- Local Phase Space - Shaped by Chaos?.- Barred Galaxies: an Observer’s Perspective.- Invariant manifolds and the spiral arms of barred galaxies.- Collisional N-body simulations and time-dependent orbital complexity.- Resonances in Galactic and Circumstellar Disks.- Regular and Chaotic motion in elliptical galaxies.- Orbital distributions and self-consistency in elliptical galaxies.- The Connection between Orbits and Isophotal Shape in Elliptical Galaxies.- Gas orbits in a spiral potential.- The structure of the phase space in galactic potentials of three degrees of freedom.- Regular and chaotic orbits in narrow 2D bar models.- The coalescence of invariant manifolds in barred-spiral galaxies.- Celestial Mechanics.- Chaotic Dynamics in Planetary Systems.- Routes to Chaos in Resonant Extrasolar Planetary Systems.- Prometheus and Pandora, the champions of dynamical chaos.- Planets in Multiple Star Systems: A Symplectic Approach.- Stabilized Chaos in The Sitnikov Problem.- Fundamental concepts and methods.- Nonextensive Statistical Mechanics - An Approach to Complexity.- Absolute versus Relative Motion in Mechanics.- Far fields, from electrodynamics to gravitation, and the dark matter problem.- Distribution functions for galaxies using quadratic programming.- Chaos Analysis Using the Patterns Method..- On the topology of regions of 3-d particle motions in annular configurations of n bodies with a central post-newtonian potential..- The Average Power-Law growth of deviation vector and Tsallis entropy.- Global dynamics of coupled standard maps.- Other Astronomical Systems.- The Chaotic Light Curves of Accreting Black Holes.- 3D Accretion Discs Dynamics: Numerical simulations.- Growth of Density Fluctuations at the Time of Leptogenesis.- Fully developed turbulence in accretion discs of binary stars: turbulent viscosity coefficient and power spectrum..- Solar and Stellar Active Regions.- Chaos and Self-Organization in Solar Flares - A Critical Analysis of the Present Approach.- Charged particles’ acceleration through Reconnecting Current Sheets in Solar Flares.- The perturbed Photometric-Magnetic dynamical model for the sunspot evolution.- The dynamics of non-symmetrically collapsing stars.- Cosmic Order out of Primordial Chaos: a tribute to Nikos Voglis.- Cosmological Inflation: A Personal Perspective.

Blurb

The conference "Chaos in Astronomy" was held in Athens on 17-20 Sep 2007. International leaders in the field addressed the topics

• Chaos in large N-body systems and in galactic dynamics
• Chaos in solar system dynamics
• Statistical mechanics of systems with regular and chaotic orbits
• Chaos in the formation of large-scale structure in the Universe
• Fundamental concepts, methods and tools.

The book contains carefully edited refereed contributions. It serves as a reference to researchers and will give an overview to students and newcomers entering any field of dynamical astronomy.