Self-Organized Criticality in Astrophysics

Self-Organized Criticality in Astrophysics PDF

Author: Markus Aschwanden

Publisher: Springer Science & Business Media

Published: 2011-01-11

Total Pages: 416

ISBN-13: 3642150012

DOWNLOAD EBOOK →

Markus Aschwanden introduces the concept of self-organized criticality (SOC) and shows that due to its universality and ubiquity it is a law of nature for which he derives the theoretical framework and specific physical models in this book. He begins by providing an overview of the many diverse phenomena in nature which may be attributed to SOC behaviour. The author then introduces the classic lattice-based SOC models that may be explored using numerical computer simulations. These simulations require an in-depth knowledge of a wide range of mathematical techniques which the author introduces and describes in subsequent chapters. These include the statistics of random processes, time series analysis, time scale distributions, and waiting time distributions. Such mathematical techniques are needed to model and understand the power-law-like occurrence frequency distributions of SOC phenomena. Finally, the author discusses fractal geometry and scaling laws before looking at a range of physical SOC models which may be applicable in various aspects of astrophysics. Problems, solutions and a glossary will enhance the pedagogical usefulness of the book. SOC has been receiving growing attention in the astrophysical and solar physics community. This book will be welcomed by students and researchers studying complex critical phenomena.

Astrophysics

Astrophysics PDF

Author: Wolfgang Kundt

Publisher: Springer Science & Business Media

Published: 2006-01-27

Total Pages: 226

ISBN-13: 3540269835

DOWNLOAD EBOOK →

Devised for a quantitative understanding of the physics of the universe from the solar system through the milky way to clusters of galaxies all the way to cosmology, this acclaimed text offers among the most concise and most critical ones of extant works. Special chapters are devoted to magnetic and radiation processes, disks, black-hole candidacy, bipolar flows, cosmic rays, gamma-ray bursts, image distortions, and special sources. At the same time, planet earth is viewed as the arena for life, with plants and animals having evolved to homo sapiens during cosmic time. This text is unique in covering the basic qualitative and quantitative tools, formulae as well as numbers, needed to for the precise interpretation of frontline phenomena.

The Astronomers' Magic Envelope

The Astronomers' Magic Envelope PDF

Author: Prasenjit Saha

Publisher: Oxford University Press

Published: 2018-05-11

Total Pages: 132

ISBN-13: 019254845X

DOWNLOAD EBOOK →

Working physicists, and especially astrophysicists, value a good `back-of-the-envelope' calculation, meaning a short, elegant computation or argument that starts from general principles and leads to an interesting result. This book guides students on how to understand astrophysics using general principles and concise calculations — endeavouring to be elegant where possible and using short computer programs where necessary. The material proceeds in approximate historical order. The book begins with the Enlightenment-era insight that the orbits of the planets is easy, but the orbit of the Moon is a real headache, and continues to deterministic chaos. This is followed by a chapter on spacetime and black holes. Four chapters reveal how microphysics, especially quantum mechanics, allow us to understand how stars work. The last two chapters are about cosmology, bringing us to 21st-century developments on the microwave background and gravitational waves.

Self-Organised Criticality

Self-Organised Criticality PDF

Author: Gunnar Pruessner

Publisher: Cambridge University Press

Published: 2012-08-30

Total Pages: 517

ISBN-13: 0521853354

DOWNLOAD EBOOK →

An overview of results and methods, written for graduates and researchers in physics, mathematics, biology, sociology, finance, medicine and engineering.

Self-Organized Criticality

Self-Organized Criticality PDF

Author: Henrik J. Jensen

Publisher:

Published:

Total Pages: 170

ISBN-13:

DOWNLOAD EBOOK →

Self-organized criticality (SOC) is based upon the idea that complex behavior can develop spontaneously in certain multi-body systems whose dynamics vary abruptly. This book is a clear and concise introduction to the field of self-organized criticality, and contains an overview of the main research results. The author begins with an examination of what is meant by SOC, and the systems in which it can occur. He then presents and analyzes computer models to describe a number of systems, and he explains the different mathematical formalisms developed to understand SOC. The final chapter assesses the impact of this field of study, and highlights some key areas of new research. The author assumes no previous knowledge of the field, and the book contains several exercises. It will be ideal as a textbook for graduate students taking physics, engineering, or mathematical biology courses in nonlinear science or complexity.

Organizations and Strategies in Astronomy

Organizations and Strategies in Astronomy PDF

Author: André Heck

Publisher: Springer Science & Business

Published: 2004-10-19

Total Pages: 810

ISBN-13: 9789812384324

DOWNLOAD EBOOK →

This book is the fifth volume under the title Organizations and Strategies in Astronomy (OSA). These OSA Books are intended to cover a large range of fields and themes. In practice, one could say that all aspects of astronomy-related life and environment are considered in the spirit of sharing specific expertise and lessons learned. This book offers a unique collection of chapters dealing with socio-dynamical aspects of the astronomy (and related space sciences) community: characteristics of organizations, strategies for development, operational techniques, observing practicalities, educational policies, public outreach, publication studies, research communication, evaluation procedures, research indicators, national specificities, contemporary history, and so on. The experts contributing to this book have done their best to write in a way understandable to readers not necessarily hyperspecialized in astronomy while providing specific detailed information and sometimes enlightening ‘lessons learned’ sections. The book concludes with an updated bibliography of publications related to socio-astronomy and to the interactions of the astronomy community with the society at large. This book will be most usefully read by researchers, teachers, editors, publishers, librarians, sociologists of science, research planners and strategists, project managers, public-relations officers, plus those in charge of astronomy-related organizations, as well as by students aiming at a career in astronomy or related space science. The book includes a CD-ROM containing the visionary and fascinating work of L. Pešek as a space artist. "More than anything else, Organizations and Strategies in Astronomy is about change, recording where we've been and how we have evolved, and extrapolating to where we will be in the coming decades." Caty Pilachowski, outgoing President of the AAS

An Invitation to Astrophysics

An Invitation to Astrophysics PDF

Author: Thanu Padmanabhan

Publisher: World Scientific Astronomy and

Published: 2006

Total Pages: 0

ISBN-13: 9789812566874

DOWNLOAD EBOOK →

This unique book provides a clear and lucid description of several aspects of astrophysics and cosmology in a language understandable to a physicist or beginner in astrophysics. It presents the key topics in all branches of astrophysics and cosmology in a simple and concise language. The emphasis is on currently active research areas and exciting new frontiers rather than on more pedantic topics. Many complicated results are introduced with simple, novel derivations which strengthen the conceptual understanding of the subject. The book also contains over one hundred exercises which will help students in their self study.Undergraduate and graduate students in physics and astrophysics as well as all physicists who are interested in obtaining a quick grasp of astrophysical concepts will find this book useful.

Long-range Correlations in Astrophysical Systems

Long-range Correlations in Astrophysical Systems PDF

Author: J. Robert Buchler

Publisher:

Published: 1998

Total Pages: 168

ISBN-13:

DOWNLOAD EBOOK →

This volume presents the proceedings from the 12th Florida Workshop in Astronomy and Physics. The subject of long-range correlations in astrophysical systems is viewed from the differing perspectives of astronomers, mathematicians, plasma physicists and other investigators in condensed-matter physics and statistical mechanics. Among topics considered are long-range order in gravitational systems, gravitational correlations in systems with short-range forces in nonequilibrium states, pattern formation die to instability and bifurcation, fluid-type cellular automata without detailed balance, clustering of granular media, fluctuation-induced forces, and generic self-organization.

Cosmology and Particle Astrophysics

Cosmology and Particle Astrophysics PDF

Author: L. Bergstrom

Publisher:

Published: 1999

Total Pages: 370

ISBN-13:

DOWNLOAD EBOOK →

In recent years, there has been an increasing realisation that there are important areas of 'common ground' between modern particle physics and high-energy astrophysics. This book provides a much needed, readable yet comprehensive overview of particle physics, and emphasises the close links between particle physics and cosmology. Beginning with some basic facts about the observable universe, the authors consider, in successive chapters, special and general relativity, gravitational lenses, cosmological models, particles and fields, thermodynamics and phase transitions in the early universe. The cosmic microwave background, structure formation and dark matter, the inflationary universe, gamma rays, cosmic rays, neutrinos and gravitational wave detectors are then discussed. Recent discoveries, such as neutrino mass and oscillations, and measurements of the universe using supernovae, are treated in a pedagogical and non-technical manner. A feature of this book is that it is 'self-contained, in that no specialised knowledge is required on the part of the reader except basic undergraduate mathematics and physics. In addition to the more descriptive sections where the reader is able to get the 'flavour' of the subject without needing to follow every step involved, some chapters contain optional, more technical parts which may be skipped by less advanced readers. By combining the expertise of both a leading experimentalist and foremost theorist, this book includes important aspects of both observational cosmology as well as more theoretical concepts. Readership: Undergraduate and postgraduate students of astronomy, astrophysics, cosmology, particle physics, theoretical physics and mathematical physics, and those carrying out research in these fields. Lars Bergström is Associate Professor in the Department of Physics at Stockholm University. He has authored or co-authored over 100 technical articles and scientific papers on physics in general and particle physics in particular. Ariel Goobar is Postdoctoral Research Fellow in Experimental Particle Astrophysics at FYSIKUM, Stockholm University, Sweden. As active researchers in the subjects of high-energy neutrino astrophysics and cosmology, both authors are internationally respected authorities in the field of particle astrophysics.