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Author: Arnold Hanslmeier
Publisher: Springer Nature
ISBN: 9811598215
Category : Science
Languages : en
Pages : 228
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Book Description
This book offers an overview of solar physics with a focus on solar activity, particularly the activity cycle. It is known that solar activity varies periodically, but there are also phases of intermittency, such as the Maunder minimum, during which solar activity is very low or high over several decades. The book provides a brief introduction to chaos theory and investigates solar activity in terms of its chaotic behavior. It also discusses how intermittent phases of solar activity have affected and can affect Earth’s climate and long-term space weather, and reviews the underlying theories relating to the solar dynamo mechanism. Furthermore, each chapter includes references to scientific literature (review articles and papers) so that readers can delve deeper into the subjects covered. This richly illustrated book will appeal to a wide readership, and is also useful as a textbook for courses in solar physics and astrophysics.
Author: Arnold Hanslmeier
Publisher: Springer Nature
ISBN: 9811598215
Category : Science
Languages : en
Pages : 228
Get Book Here
Book Description
This book offers an overview of solar physics with a focus on solar activity, particularly the activity cycle. It is known that solar activity varies periodically, but there are also phases of intermittency, such as the Maunder minimum, during which solar activity is very low or high over several decades. The book provides a brief introduction to chaos theory and investigates solar activity in terms of its chaotic behavior. It also discusses how intermittent phases of solar activity have affected and can affect Earth’s climate and long-term space weather, and reviews the underlying theories relating to the solar dynamo mechanism. Furthermore, each chapter includes references to scientific literature (review articles and papers) so that readers can delve deeper into the subjects covered. This richly illustrated book will appeal to a wide readership, and is also useful as a textbook for courses in solar physics and astrophysics.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
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Book Description
The cyclic variation of solar activity is both irregular and intermittent. We have sought to isolate and illuminate the physical mechanisms of this behavior and to provide a mathematical description of it. Our work has brought out three ingredients of the solar cycle that we believe to be central to its operation. (1) The seat of the solar cycle is in a shear layer just below the solar convection zone. We have investigated the structure of this layer (which we call the solar tachocline) in some detail. (2) The spatio-temporal development of the solar cycle is represented by the propagation of robust solitary waves which are affected by dissipation and instability. We have studied the structure and interactions of such waves, which we call solitoids. (3) On top of the simple propagative behavior of the solar solitoids there are intermissions during which the number of sunspots remains quite small. We attribute these intermissions (such as the Maunder minimum) to a form of interaction between the convection zone and the tachocline which is characteristic of a process that we have developed and that we call on/off intermittency. These three ingredients make up some of the key features of the solar cycle and may be expected to play a role in future simulations of the solar cycle.
Author: André Balogh
Publisher: Springer
ISBN: 1493925849
Category : Science
Languages : en
Pages : 594
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Book Description
A collection of papers edited by four experts in the field, this book sets out to describe the way solar activity is manifested in observations of the solar interior, the photosphere, the chromosphere, the corona and the heliosphere. The 11-year solar activity cycle, more generally known as the sunspot cycle, is a fundamental property of the Sun. This phenomenon is the generation and evolution of magnetic fields in the Sun’s convection zone, the photosphere. It is only by the careful enumeration and description of the phenomena and their variations that one can clarify their interdependences. The sunspot cycle has been tracked back about four centuries, and it has been recognized that to make this data set a really useful tool in understanding how the activity cycle works and how it can be predicted, a very careful and detailed effort is needed to generate sunspot numbers. This book deals with this topic, together with several others that present related phenomena that all indicate the physical processes that take place in the Sun and its exterior environment. The reviews in the book also present the latest theoretical and modelling studies that attempt to explain the activity cycle. It remains true, as has been shown in the unexpected characteristics of the first two solar cycles in the 21st century, that predictability remains a serious challenge. Nevertheless, the highly expert and detailed reviews in this book, using the very best solar observations from both ground- and space based telescopes, provide the best possible report on what is known and what is yet to be discovered. Originally published in Space Science Reviews, Vol 186, Issues 1-4, 2014.
Author: Edward A. Spiegel
Publisher:
ISBN:
Category : Chaotic behavior in systems
Languages : en
Pages : 0
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Book Description
Author: Henry Helm Clayton
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 22
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Book Description
Author: Steven Haywood Yaskell
Publisher: Trafford Publishing
ISBN: 146696300X
Category : Science
Languages : en
Pages : 225
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Book Description
It was one more defeat in our long and losing battle to keep the Sun perfect, or, if not perfect, constant, and if inconstant, regular. Why we think the Sun should be any of these when other stars are not is more a question for social than for physical science. John A. (“Jack”) Eddy Delineator of the Maunder Minimum On the human Idée fi xe as to why the Sun must be seen energetically as a linear entity. Around 1904, Kapteyn noticed that the stars did not move randomly through space, but that their movements had preferential directions... there was regularity in something astronomers had always thought to be chaotic. Adriaan Blaauw, emeritus director of the Kapteyn Institute, Groningen, Netherlands On Jacob Cornelius Kapteyn’s discovery of star streaming: the concept of galactic rotation and so, proof of some regularity in stellar behavior.
Author: Peter R. Wilson
Publisher: Cambridge University Press
ISBN: 9780521548212
Category : Science
Languages : en
Pages : 300
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Book Description
A timely and authoritative synthesis of our understanding of activity cycles in the Sun and similar stars for graduate students and researchers.
Author: Josephine G. Palencia
Publisher:
ISBN:
Category : Chaotic behavior in systems
Languages : en
Pages : 120
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Book Description
Author: Derek Justin Schove
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 424
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Book Description
Author: Paul Charbonneau
Publisher:
ISBN:
Category : Solar activity
Languages : en
Pages : 20
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Book Description
In a recent paper, Durney (2000) has discussed a physically plausible procedure whereby the dynamo equations describing magnetic field regeneration in Babcock-Leighton models of the solar cycle can be reduced to a one-dimensional iterative map. This procedure is used here to investigate the behavior of various dynamo-inspired maps. Durney's explanation of the so-called odd-even effect in sunspot cycle peak amplitudes, which he ascribed to a period-2 limit cycle, is found to be robust with respect the choice of nonlinearity defining the map, and to the action of strong stochastic forcing. In fact, even maps without limit cycles are found to show a strong odd-even signal in the presence of forcing. Some of the stochastically forced maps are found to exhibit a form of on-off intermittency, with periods of activity separated by quiescent phases of low cycle amplitudes. In one such map, a strong odd-even signal is found to be a good precursor to the transition from bursting to quiescent behavior.
