Large Scale Magnetic Fields In The Universe

Author : Rainer Beck,Andre Balogh,D. V. Bykov,Rudolf A. Treumann,Lawrence Widrow
Publisher : Springer
Page : 0 pages
File Size : 40,5 Mb
Release : 2012-11-15
Category : Science
ISBN : 1461457289

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Large-scale Magnetic Fields in the Universe by Rainer Beck,Andre Balogh,D. V. Bykov,Rudolf A. Treumann,Lawrence Widrow Pdf

A collection of sixteen coordinated reviews on the origins of large-scale magnetic fields in the Universe, this book discusses magnetic fields in all relevant astrophysical contexts, from the interstellar medium to the scales of galaxies and clusters of galaxies. Magnetic fields are described in their very diverse environments, from stellar winds to galactic haloes and astrophysical jets; together with the roles they play in forming the structures and shaping the dynamics of these objects. Both observational evidence and its theoretical interpretations are covered up to the largest scales in the Universe. The authors are all leading scientists in their fields, making this book an authoritative, up-to-date and enduring contribution to astrophysics. This volume is aimed at graduate students and researchers in astrophysics. Previously published in Space Science Reviews journal, Vol. 166/1-4 and Vol. 169/1-4, 2012.

Author : A.A. Ruzmaikin,D.D. Sokoloff,A.M. Shukurov
Publisher : Springer Science & Business Media
Page : 322 pages
File Size : 48,7 Mb
Release : 2013-06-29
Category : Science
ISBN : 9789400928350

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Magnetic Fields of Galaxies by A.A. Ruzmaikin,D.D. Sokoloff,A.M. Shukurov Pdf

Magnetism, when extended beyond normal frameworks into cosmic space is characterized by an enormous spatial scale. Because of their large sizes the nature of magnets such as the Earth and the Sun is entirely different from the nature of a horseshoe magnet. The source of cosmic magnetism is associated with the hydrodynamic motions of a highly conductive medium. In this aspect, cosmic magnets resemble a dynamo. However, currents in the dynamo flow along properly ordered wires, while chaotic, turbulent motions are dominant inside stars and liquid planetary cores. This makes more intriguing and surprising the fact that these motions maintain a regular magnetic field. Maintenance of magnetic fields is even more impressive in huge magnets, i.e. galaxies. In fact, we are living inside a giant dynamo machine, the Milky Way galaxy. Although the idea of the global magnetic field of our Galaxy was clearly proposed almost 40 years ago, firm observational evidence and definite theoretical concepts of galactic magnetism have been developed only in the last decade. This book is the first attempt at a full and consistent presentation of this problem. We discuss both theoretical views on the origin of galactic magnetism and the methods of observational study. Previous discussions were on the level of review articles or separate chapters in monographs devoted to cosmic magnetic fields (see, e.g., H. K. Moffatt, 1978, E. N. Parker, 1979 and Zeldovich et aI., 1983).

Author : Anvar Shukurov,Kandaswamy Subramanian
Publisher : Cambridge University Press
Page : 641 pages
File Size : 49,5 Mb
Release : 2021-12-16
Category : Science
ISBN : 9780521861052

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Astrophysical Magnetic Fields by Anvar Shukurov,Kandaswamy Subramanian Pdf

This self-contained introduction to astrophysical magnetic fields provides a comprehensive review of the current state of the field and a critical discussion of the latest research. Its emphasis on results that are likely to form the basis for future progress benefits a broad audience of advanced students and active researchers.

Author : F. Krause
Publisher : CRC Press
Page : 184 pages
File Size : 47,8 Mb
Release : 1990
Category : Science
ISBN : 0677260202

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Magnetic Fields in Galaxies by F. Krause Pdf

Presents the proceedings of the Workshop on Magnetic Fields in Galaxies, which was held in Potsdam (GDR) in the autumn of 1988.

Author : Richard Wielebinski,Rainer Beck
Publisher : Springer Science & Business Media
Page : 306 pages
File Size : 54,7 Mb
Release : 2005-09-13
Category : Science
ISBN : 3540241752

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Cosmic Magnetic Fields by Richard Wielebinski,Rainer Beck Pdf

While magnetic fields permeate the universe on all scales, the present book is dedicated to their investigation on the largest scales and affords a balanced account of both theoretical and observational aspects. Written as a set of advanced lectures and tutorial reviews that lead up to the forefront of research, this book offers both a modern source of reference for the experienced researchers as well as a high-level introductory text for postgraduate students and nonspecialist researchers working in related areas.

Author : Vasily S. Beskin,A. Balogh,Maurizio Falanga,Maxim Lyutikov,Sandro Mereghetti,Tsvi Piran,R.A. Treumann
Publisher : Springer
Page : 583 pages
File Size : 48,7 Mb
Release : 2016-01-29
Category : Science
ISBN : 9781493935505

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The Strongest Magnetic Fields in the Universe by Vasily S. Beskin,A. Balogh,Maurizio Falanga,Maxim Lyutikov,Sandro Mereghetti,Tsvi Piran,R.A. Treumann Pdf

This volume extends the ISSI series on magnetic fields in the Universe into the domain of what are by far the strongest fields in the Universe, and stronger than any field that could be produced on Earth. The chapters describe the magnetic fields in non-degenerate strongly magnetized stars, in degenerate stars (such as white dwarfs and neutron stars), exotic members called magnetars, and in their environments, as well as magnetic fields in the environments of black holes. These strong fields have a profound effect on the behavior of matter, visible in particular in highly variable processes like radiation in all known wavelengths, including Gamma-Ray bursts. The generation and structure of such strong magnetic fields and effects on the environment are also described.

Author : I︠A︡kov Borisovich Zelʹdovich,Aleksandr Andreevich Ruzmaĭkin,D. D. Sokoloff
Publisher : Taylor & Francis Group
Page : 392 pages
File Size : 54,5 Mb
Release : 1983
Category : Science
ISBN : UCAL:B4154537

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Magnetic Fields in Astrophysics by I︠A︡kov Borisovich Zelʹdovich,Aleksandr Andreevich Ruzmaĭkin,D. D. Sokoloff Pdf

Author : Sharanya Sur
Publisher : Mohammed Abdul Malik
Page : 0 pages
File Size : 49,5 Mb
Release : 2024-04-05
Category : Science
ISBN : 9798224772223

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Origin and Evolution of Cosmic Magnetic Fields by Sharanya Sur Pdf

Magnetic fields are ubiquitous in the universe and their study forms an important area of research in modern day astrophysics. Starting from planetary magnetic fields like the one of the Earth, magnetic fields are found to exist in stars like the Sun, in galaxies to clusters of galaxies. The importance of magnetic fields for our understanding of the Universe has been appreciated since mid-1950's when the advent of radio astronomy and the studies of cosmic ray propagation and confinement revealed a Universe filled with thermal and relativistic plasma whose motions are controlled by magnetic fields. Indeed, cosmic magnetic fields play a crucial role in a number of physical processes in the universe from confining cosmic rays, controlling star formation, driving turbulence in accretion discs, to the production and collimation of jets in AGN's. An extensive review of astrophysical magnetic fields incorporating recent results are in Brandenburg and Subramanian(2005a). Let us first have a quick look into the estimates of the strength and coherence scales of magnetic fields in some astrophysical objects. The magnetic field of the Sun consists of large-scale and small-scale components. The magnetic field of the Sun consists of large-scale and small-scale components. The typical length scale associated with the large-scale field is the width of the toroidal flux belts with the same polarity around the 30° latitude corresponding to about 300 Mm (1Mm = 1000 km). The pressure scale height at the bottom of the convection zone is about 50 Mm and scales smaller than this is associated with the small-scale field.

Author : Eugene N. Parker
Publisher : Princeton University Press
Page : 196 pages
File Size : 45,9 Mb
Release : 2013-03-25
Category : Science
ISBN : 9781400847433

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Conversations on Electric and Magnetic Fields in the Cosmos by Eugene N. Parker Pdf

Today's standard textbooks treat the theoretical structure of electric and magnetic fields, but their emphasis is on electromagnetic radiation and static-electric and magnetic fields. In this book, Eugene Parker provides advanced graduate students and researchers with a much-needed complement to existing texts, one that discusses the dynamic electromagnetism of the cosmos--that is, the vast magnetic fields that are carried bodily in the swirling ionized gases of stars and galaxies and throughout intergalactic space. Parker is arguably the world's leading authority on solar wind and the effects of magnetic fields in the heliosphere, and his originality of thought and distinctive approach to physics are very much in evidence here. Seeking to enrich discussions in standard texts and correct misconceptions about the dynamics of these large-scale fields, Parker engages readers in a series of "conversations" that are at times anecdotal and even entertaining without ever sacrificing theoretical rigor. The dynamics he describes represents the Maxwell stresses of the magnetic field working against the pressure and inertia of the bulk motion of ionized gases, characterized in terms of the magnetic field and gas velocity. Parker shows how this dynamic interaction cannot be fully expressed in terms of the electric current and electric field. Conversations on Electric and Magnetic Fields in the Cosmos goes back to basics to explain why classical hydrodynamics and magnetohydrodynamics are inescapable, even in the deepest reaches of space.

Author : Aurora Simionescu
Publisher : GRIN Verlag
Page : 86 pages
File Size : 49,7 Mb
Release : 2009-01-21
Category : Electronic
ISBN : 9783640244133

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Magnetic Fields in Galaxy Clusters by Aurora Simionescu Pdf

Bachelor Thesis from the year 2005 in the subject Astronomy, grade: 1,0, University of Bremen, 14 entries in the bibliography, language: English, abstract: An adaptive mesh refinement simulation of galaxy cluster formation was performed that included the passive evolution of a magnetic field. It was found that structure formation plays an important role in amplifying large-scale magnetic fields and that the magnetic properties of the obtained cluster were in good agreement with recent observations. The initial field was amplified by a factor of up to 1000 during the formation of the cluster, and the field strength was seen to be well correlated with the gas density. We further found a magnetic energy power spectrum that is well described by -5/3 Kolmogorov-type turbulence. Near the accretion shocks on the outskirts of the cluster, the magnetic field is amplified well beyond the value expected from mere compression of gas. Here, shear flows lead to a substantial increase in field strength. Realistic Faraday rotation measures were obtained from the simulation data, which was however not resolved well-enough to allow for a more quantitative analysis.

Author : Alexander Lazarian,Elisabete M. de Gouveia Dal Pino,Claudio Melioli
Publisher : Springer
Page : 623 pages
File Size : 51,8 Mb
Release : 2014-11-14
Category : Science
ISBN : 9783662446256

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Magnetic Fields in Diffuse Media by Alexander Lazarian,Elisabete M. de Gouveia Dal Pino,Claudio Melioli Pdf

This volume presents the current knowledge of magnetic fields in diffuse astrophysical media. Starting with an overview of 21st century instrumentation to observe astrophysical magnetic fields, the chapters cover observational techniques, origin of magnetic fields, magnetic turbulence, basic processes in magnetized fluids, the role of magnetic fields for cosmic rays, in the interstellar medium and for star formation. Written by a group of leading experts the book represents an excellent overview of the field. Nonspecialists will find sufficient background to enter the field and be able to appreciate the state of the art.

Author : International Astronomical Union. Symposium
Publisher : Cambridge University Press
Page : 716 pages
File Size : 55,7 Mb
Release : 2009-06-11
Category : Science
ISBN : 0521889901

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Cosmic Magnetic Fields (IAU S259) by International Astronomical Union. Symposium Pdf

IAU Symposium 259 presents the first interdisciplinary, comprehensive review of the role of cosmic magnetic fields, involving astronomers and physicists from across the community. Offering both theoretical and observational topics ranging from Earth's habitability to the origin of the universe, this is an invaluable summary for researchers and graduate students.

Author : E. N. Parker
Publisher : Oxford University Press
Page : 860 pages
File Size : 50,9 Mb
Release : 2019-10-10
Category : Science
ISBN : 9780192565570

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Cosmical Magnetic Fields by E. N. Parker Pdf

This well known and widely used landmark text explores the universal spontaneous generation of magnetic fields in astronomical bodies and the agitation of the bodies by those fields. The general properties of magnetic fields, their appearance throughout the astronomical universe, and the havoc they wreak are described in simple physical terms so as to define the broad scientific problem presented by magnetic fields. Then, with the physical problems clearly in mind, the theoretical effects are demonstrated with formal mathematical illustrations from the basic electromagnetic equations. Oxford Classic Texts in the Physical Sciences From James Clerk Maxwell's towering achievement Treatise on electricity and magnetism, to today's ground-breaking research, Oxford University Press has often been regarded as the publisher of first choice for generations of scientists. The legacy of this long publishing tradition is an unrivalled catalogue of past publications, some of which have been unavailable from us for many years. By popular demand, Oxford University Press is now reissuing some of its most celebrated science classics in the Oxford Classic Texts series. The titles to be included have been selected not only for their historic significance, but also for their enduring eloquence and clarity of presentation. Individually, each book in this collection represents a milestone in the development of scientific thought and pedagogy; collectively these books amount to an unparalleled scientific library for the enjoyment of a new generation of readers.

Author : Norma G. Sànchez,Yuri N. Parijskij
Publisher : Springer Science & Business Media
Page : 574 pages
File Size : 55,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400710580

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The Early Universe and the Cosmic Microwave Background: Theory and Observations by Norma G. Sànchez,Yuri N. Parijskij Pdf

The goal of the Daniel Chalonge School on Astrofundamental Physics is to contribute to a theory of the universe (and particularly of the early universe) up to the marks, and at the scientific height of, the unprecedented accuracy, existent and expected, in the observational data. The impressive development of modern cosmology during the last decades is to a large extent due to its unification with elementary particle physics and quantum field theory. The cross-section between these fields has been increasing setting up Astrofundamental Physics. The early universe is an exceptional (theoretical and experimental) laboratory in this new discipline. This NATO Advanced Study Institute provided an up dated understanding, from a fundamental physics and deep point of view, of the progress and key issues in the early universe and the cosmic microwave background: theory and observations. The genuine interplay with large scale structure formation and dark matter problem were discussed. The central focus was placed on the cosmic microwave background. Emphasis was given to the precise inter-relation between fundamental physics and cosmology in these problems, both at the theoretical and experimental/observational levels, within a deep and well defined programme which provided in addition, a careful interdisciplinarity. Special sessions were devoted to high energy cosmic rays, neutrinos in astrophysics, and high energy astrophysics. Deep understanding, clarification, synthesis, careful interdisciplinarity within a fundamental physics framework, were the main goals of the course.

Author : R. Beck,P.P. Kronberg,R. Wielebinski
Publisher : Springer Science & Business Media
Page : 582 pages
File Size : 40,7 Mb
Release : 1990-04-30
Category : Science
ISBN : 0792307046

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Galactic and Intergalactic Magnetic Fields by R. Beck,P.P. Kronberg,R. Wielebinski Pdf

This Symposium, the first devoted entirely to the measurement and the role of magnetic fields in the non-solar Universe, was held in Heidelberg, on June 19-23, 1989. The meeting began with review talks on magnetic phenomena near the solar photosphere, corona, and in stellar winds, since these nearby "laboratories", studied for many years, provide much of the prior knowl edge of magnetic effects in astrophysical plasmas. The Symposium contained presentations of considerable new work concerning the role of magnetic fields in accretion disks, bipolar outflows, and related magnetic phenomena in molecular clouds and star forming regions. Both observa tions and related theory of the large-scale magnetic fields in the Milky Way were covered, in addition to a session on the more general theme of magnetohydrodynamics of galactic magnetic fields. Dynamo mechanisms were discussed in considerable detail. It was apparent that recent observational data on polarized emission from external galaxies are now of sufficiently high quality that meaningful tests of large-scale field amplification, and of ideas on the origin of galactic magnetic fields, can be undertaken. Both new observations and numerical simulation work were described in the context of active galaxy nuclei, supernova remnants, radio source jets and extended lobes, and also in the environment of galaxy clusters. Recent large-scale computer simulations incorporating magnetic fields in star formation, radio source jets, and many other phenomena were presented, and much of this was very new.