Solar And Stellar Dynamos
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Solar And Stellar Dynamos
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Author : Manfred Schüssler
language : en
Publisher: Springer
Release Date : 2024-09-09
Solar And Stellar Dynamos written by Manfred Schüssler and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-09-09 with Science categories.
This volume provides a comprehensive overview of the current understanding of the dynamo processes that generate magnetic fields in the Sun and other stars with outer convection zones. Magnetic fields are responsible for the restless activity of the Sun, which include the coming and going of sunspots throughout its 11-year activity cycle, the heating of the solar corona, and the driving forces behind huge eruptions of mass and energy that can affect near-Earth space and terrestrial technical systems. Likewise, other stars show such activity, often even much more energetically as their solar counterparts. The review papers collected in this volume are written by experts in this research field. The papers deliver introductions to the observational results on solar and stellar magnetic fields and provide detailed presentations on the theoretical concepts and models for self-excited dynamo processes and the underlying flow patterns that cause the emergence, structure, and evolution of magnetic patterns at the surfaces of the Sun and other stars. Comprehensive and realistic numerical simulations have become an indispensable tool for understanding the turbulent processes in stellar interiors as well as for testing analytical approaches and simplified models. Readers looking for a comprehensive and up-to-date account of this dynamic research field will find a most valuable collection of reviews; serving both as an introduction for newcomers in the field as well as a timely compendium for the active researcher. The book is a spin-off from the Topical Collection "Solar and Stellar Dynamos: A New Era" of the journal Space Science Reviews.
Solar And Stellar Dynamos
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Author : Paul Charbonneau
language : en
Publisher: Springer
Release Date : 2012-11-06
Solar And Stellar Dynamos written by Paul Charbonneau and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-11-06 with Science categories.
Astrophysical dynamos are at the heart of cosmic magnetic fields of a wide range of scales, from planets and stars to entire galaxies. This book presents a thorough, step-by-step introduction to solar and stellar dynamos. Looking first at the ultimate origin of cosmic seed magnetic fields, the antagonists of field amplification are next considered: resistive decay, flux expulsion, and flows ruled out by anti-dynamo theorems. Two kinematic flows that can act as dynamos are then studied: the Roberts cell and the CP-flow. Mean-field electrodynamics and derivation of the mean-field dynamo equations lead to the alpha Omega-dynamo, the flux transport dynamo, and dynamos based on the Babcock-Leighton mechanism. Alternatives to the mean-field theory are also presented, as are global MHD dynamo simulations. Fluctuations and grand minima in the solar cycle are discussed in terms of dynamo modulations through stochastic forcing and nonlinear effects. The book concludes with an overview of the major challenges in understanding stellar magnetic fields and their evolution in terms of various dynamo models, global MHD simulations, and fossil fields. Each chapter is accompanied by an annotated bibliography, guiding the readers to the relevant technical literature, which may lead them to carry out their own research in the field of dynamo theory.
Solar And Stellar Magnetic Activity
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Author : C. J. Schrijver
language : en
Publisher: Cambridge University Press
Release Date : 2008-10-30
Solar And Stellar Magnetic Activity written by C. J. Schrijver and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-10-30 with Science categories.
This timely volume provides the first comprehensive review and synthesis of current understanding of magnetic fields in the Sun and similar stars. Magnetic activity results in a wealth of phenomena - including starspots, non-radiatively heated outer atmospheres, activity cycles, deceleration of rotation rates, and even, in close binaries, stellar cannibalism - all of which are covered clearly and authoritatively. This book brings together for the first time recent results in solar studies and stellar studies. The result is an illuminating new view of stellar magnetic activity. Key topics include radiative transfer, convective simulations, dynamo theory, outer-atmospheric heating, stellar winds and angular momentum loss. Researchers are provided with a state-of-the-art review of this exciting field, and the pedagogical style and introductory material make the book an ideal and welcome introduction for graduate students.
The Magnetic Universe
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Author : Günther Rüdiger
language : en
Publisher: John Wiley & Sons
Release Date : 2006-03-06
The Magnetic Universe written by Günther Rüdiger and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-03-06 with Science categories.
Magnetism is one of the most pervasive features of the Universe, with planets, stars and entire galaxies all having associated magnetic fields. All of these fields are generated by the motion of electrically conducting fluids, the so-called dynamo effect. The precise details of what drives the motion, and indeed what the fluid consists of, differ widely though. In this work the authors draw upon their expertise in geophysical and astrophysical MHD to explore some of these phenomena, and describe the similarities and differences between different magnetized objects. They also explain why magnetic fields are crucial in the formation of the stars, and discuss promising experiments currently being designed to study some of the relevant physics in the laboratory. This interdisciplinary approach makes the book appealing to a wide audience in physics, astrophysics and geophysics.
The Sun As A Guide To Stellar Physics
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Author : Oddbjørn Engvold
language : en
Publisher: Elsevier
Release Date : 2018-11-15
The Sun As A Guide To Stellar Physics written by Oddbjørn Engvold and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-11-15 with Science categories.
The Sun as a Guide to Stellar Physics illustrates the significance of the Sun in understanding stars through anexamination of the discoveries and insights gained from solar physics research. Ranging from theories to modelingand from numerical simulations to instrumentation and data processing, the book provides an overview of whatwe currently understand and how the Sun can be a model for gaining further knowledge about stellar physics.Providing both updates on recent developments in solar physics and applications to stellar physics, this bookstrengthens the solar–stellar connection and summarizes what we know about the Sun for the stellar, space, andgeophysics communities. - Applies observations, theoretical understanding, modeling capabilities and physical processes first revealed by the sun to the study of stellar physics - Illustrates how studies of Proxima Solaris have led to progress in space science, stellar physics and related fields - Uses characteristics of solar phenomena as a guide for understanding the physics of stars
The Physics Of Fluids And Plasmas
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Author : Arnab Rai Choudhuri
language : en
Publisher: Cambridge University Press
Release Date : 1998-11-26
The Physics Of Fluids And Plasmas written by Arnab Rai Choudhuri and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-11-26 with Science categories.
A good working knowledge of fluid mechanics and plasma physics is essential for the modern astrophysicist. This graduate textbook provides a clear, pedagogical introduction to these core subjects. Assuming an undergraduate background in physics, this book develops fluid mechanics and plasma physics from first principles. This book is unique because it presents neutral fluids and plasmas in a unified scheme, clearly indicating both their similarities and their differences. Also, both the macroscopic (continuum) and microscopic (particle) theories are developed, establishing the connections between them. Throughout, key examples from astrophysics are used, though no previous knowledge of astronomy is assumed. Exercises are included at the end of chapters to test the reader's understanding. This textbook is aimed primarily at astrophysics graduate students. It will also be of interest to advanced students in physics and applied mathematics seeking a unified view of fluid mechanics and plasma physics, encompassing both the microscopic and macroscopic theories.
Self Exciting Fluid Dynamos
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Author : Keith Moffatt
language : en
Publisher: Cambridge University Press
Release Date : 2019-04-25
Self Exciting Fluid Dynamos written by Keith Moffatt and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-04-25 with Mathematics categories.
Treats the origin of magnetic fields in planets, stars and galaxies, and the manner of their evolution over time.
The Sun In Time
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Author : Charles Philip Sonett
language : en
Publisher: University of Arizona Press
Release Date : 1991
The Sun In Time written by Charles Philip Sonett and has been published by University of Arizona Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Science categories.
An interdisciplinary approach to solar physics, as eighty-nine contributors trace the evolution of the Sun and provide a review of our current understanding of both its structure and its role in the origin and evolution of the solar system.
Fluid Dynamics And Dynamos In Astrophysics And Geophysics
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Author : Andrew M. Soward
language : en
Publisher: CRC Press
Release Date : 2005-03-16
Fluid Dynamics And Dynamos In Astrophysics And Geophysics written by Andrew M. Soward and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-03-16 with Science categories.
The increasing power of computer resources along with great improvements in observational data in recent years have led to some remarkable and rapid advances in astrophysical fluid dynamics. The subject spans three distinct but overlapping communities whose interests focus on (1) accretion discs and high-energy astrophysics; (2) solar, stellar, and galactic magnetic fields; and (3) the geodynamo, planetary magnetic fields, and associated experiments. This book grew out of a special conference sponsored by the London Mathematical Society with the support of EPSRC that brought together leading researchers in all of these areas to exchange ideas and review the status of the field. The many interesting problems addressed in this volume concern: