Physics of Gravitating Systems I

Physics of Gravitating Systems I PDF Author: A.M. Fridman
Publisher: Springer Science & Business Media
ISBN: 364287830X
Category : Science
Languages : en
Pages : 480

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Book Description
It would seem that any specialist in plasma physics studying a medium in which the interaction between particles is as distance-dependent as the inter action between stars and other gravitating masses would assert that the role of collective effects in the dynamics of gravitating systems must be decisive. However, among astronomers this point of view has been recog nized only very recently. So, comparatively recently, serious consideration has been devoted to theories of galactic spiral structure in which the dominant role is played by the orbital properties of individual stars rather than collec tive effects. In this connection we would like to draw the reader's attention to a difference in the scientific traditions of plasma physicists and astrono mers, whereby the former have explained the delay of the onset of controlled thermonuclear fusion by the "intrigues" of collective processes in the plasma, while many a generation of astronomers were calculating star motions, solar and lunar eclipses, and a number of other fine effects for many years ahead by making excellent use of only the laws of Newtonian mechanics. Therefore, for an astronomer, it is perhaps not easy to agree with the fact that the evolution of stellar systems is controlled mainly by collective effects, and the habitual methods of theoretical mechanics III astronomy must make way for the method of self-consistent fields.

Physics of Gravitating Systems I

Physics of Gravitating Systems I PDF Author: A.M. Fridman
Publisher: Springer Science & Business Media
ISBN: 364287830X
Category : Science
Languages : en
Pages : 480

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Book Description
It would seem that any specialist in plasma physics studying a medium in which the interaction between particles is as distance-dependent as the inter action between stars and other gravitating masses would assert that the role of collective effects in the dynamics of gravitating systems must be decisive. However, among astronomers this point of view has been recog nized only very recently. So, comparatively recently, serious consideration has been devoted to theories of galactic spiral structure in which the dominant role is played by the orbital properties of individual stars rather than collec tive effects. In this connection we would like to draw the reader's attention to a difference in the scientific traditions of plasma physicists and astrono mers, whereby the former have explained the delay of the onset of controlled thermonuclear fusion by the "intrigues" of collective processes in the plasma, while many a generation of astronomers were calculating star motions, solar and lunar eclipses, and a number of other fine effects for many years ahead by making excellent use of only the laws of Newtonian mechanics. Therefore, for an astronomer, it is perhaps not easy to agree with the fact that the evolution of stellar systems is controlled mainly by collective effects, and the habitual methods of theoretical mechanics III astronomy must make way for the method of self-consistent fields.

Literature 1984, Part 2

Literature 1984, Part 2 PDF Author: S. Böhme
Publisher: Springer Science & Business Media
ISBN: 3662123460
Category : Science
Languages : en
Pages : 928

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Book Description


Baryonic Processes in the Large-Scale Structuring of the Universe

Baryonic Processes in the Large-Scale Structuring of the Universe PDF Author: Jean-Baptiste Durrive
Publisher: Springer
ISBN: 3319618814
Category : Science
Languages : en
Pages : 192

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Book Description
This thesis addresses two very different but equally important topics in the very broad fields of astrophysics and cosmology: (I) the generation of cosmological magnetic fields and (II) gravitational fragmentation of the Cosmic Web. All mathematical developments are completed by illuminating physical interpretations, and the thesis, which is guided by existing observations, is purely theoretical. In part I, the author further develops a magnetogenesis model proposed in the literature, providing an unprecedented level of physical understanding. He demonstrates that the physics of photoionisation is very likely to have premagnetised, at a relevant level, the entire Universe at the early epoch of the formation of the first luminous sources. In part II, the author adapts the tools of plasma spectral theory to the context of gravitational instability of the baryonic gas within the stratified structures of the Cosmic Web. He skillfully derives the wave equation governing the growth of perturbations and explores various equilibrium configurations, in planar and cylindrical geometries characteristic of cosmic walls and filaments, for isothermal and polytropic conditions, with or without an external gravitational background. Clearly structured and written in pedagogical style, this outstanding thesis puts the results into perspective and highlights the merits and limitations of the various approaches explored.

Foundations of Quantum Gravity

Foundations of Quantum Gravity PDF Author: James Lindesay
Publisher: Cambridge University Press
ISBN: 1107328306
Category : Science
Languages : en
Pages : 419

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Book Description
Exploring how the subtleties of quantum coherence can be consistently incorporated into Einstein's theory of gravitation, this book is ideal for researchers interested in the foundations of relativity and quantum physics. The book examines those properties of coherent gravitating systems that are most closely connected to experimental observations. Examples of consistent co-gravitating quantum systems whose overall effects upon the geometry are independent of the coherence state of each constituent are provided, and the properties of the trapping regions of non-singular black objects, black holes and a dynamic de Sitter cosmology are discussed analytically, numerically and diagrammatically. The extensive use of diagrams to summarise the results of the mathematics enables readers to bypass the need for a detailed understanding of the steps involved. Assuming some knowledge of quantum physics and relativity, the book provides text boxes featuring supplementary information for readers particularly interested in the philosophy and foundations of the physics.

Applied Mechanics Reviews

Applied Mechanics Reviews PDF Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 1052

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Book Description


Physics of Gravitating Systems II

Physics of Gravitating Systems II PDF Author: A.M. Fridman
Publisher: Springer Science & Business Media
ISBN: 3642878334
Category : Science
Languages : en
Pages : 364

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Book Description


Zeldovich

Zeldovich PDF Author: R.A. Sunyaev
Publisher: CRC Press
ISBN: 0203500164
Category : Science
Languages : en
Pages : 394

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Book Description
Ya. B. Zeldovich was certainly one of the greatest physicists and cosmologists of the 20th century. This volume presents reminiscences of this exemplary academician, providing biographical and historical insights from colleagues who knew him best. Zeldovich's achievements are outlined, including those in relativistic astrophysics and cosmology, the

Physics of Long-range Interacting Systems

Physics of Long-range Interacting Systems PDF Author: Alessandro Campa
Publisher: Oxford University Press, USA
ISBN: 0199581932
Category : Science
Languages : en
Pages : 429

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Book Description
This book deals with an important class of many-body systems: those where the interaction potential decays slowly for large inter-particle distances; in particular, systems where the decay is slower than the inverse inter-particle distance raised to the dimension of the embedding space. Gravitational and Coulomb interactions are the most prominent examples, however it has become clear that long-range interactions are more common than previously thought. A satisfactory understanding of properties, generally considered as oddities only a couple of decades ago, has now been reached: ensemble inequivalence, negative specific heat, negative susceptibility, ergodicity breaking, out-of-equilibrium quasi-stationary-states, anomalous diffusion. The book, intended for Master and PhD students, tries to gradually acquaint the reader with the subject. The first two parts describe the theoretical and computational instruments needed to address the study of both equilibrium and dynamical properties of systems subject to long-range forces. The third part of the book is devoted to applications of such techniques to the most relevant examples of long-range systems.

Dynamics and Thermodynamics of Systems with Long Range Interactions

Dynamics and Thermodynamics of Systems with Long Range Interactions PDF Author: Thierry Dauxois
Publisher: Springer
ISBN: 3540458352
Category : Science
Languages : en
Pages : 492

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Book Description
Properties of systems with long range interactions are still poorly understood despite being of importance in most areas of physics. The present volume introduces and reviews the effort of constructing a coherent thermodynamic treatment of such systems by combining tools from statistical mechanics with concepts and methods from dynamical systems. Analogies and differences between various systems are examined by considering a large range of applications, with emphasis on Bose--Einstein condensates. Written as a set of tutorial reviews, the book will be useful for both the experienced researcher as well as the nonexpert scientist or postgraduate student.

Astrophysics

Astrophysics PDF Author:
Publisher: PediaPress
ISBN:
Category :
Languages : en
Pages : 625

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Book Description