Solar and Stellar Magnetic Activity

Solar and Stellar Magnetic Activity PDF Author: Carolus J. Schrijver
Publisher:
ISBN: 9780521582865
Category : Science
Languages : en
Pages : 384

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Book Description
The first comprehensive review and synthesis of current understanding of magnetic fields in the Sun and similar stars.

Solar and Stellar Magnetic Activity

Solar and Stellar Magnetic Activity PDF Author: Carolus J. Schrijver
Publisher:
ISBN: 9780521582865
Category : Science
Languages : en
Pages : 384

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Book Description
The first comprehensive review and synthesis of current understanding of magnetic fields in the Sun and similar stars.

Solar and Stellar Magnetic Activity

Solar and Stellar Magnetic Activity PDF Author: C. J. Schrijver
Publisher: Cambridge University Press
ISBN: 1139425420
Category : Science
Languages : en
Pages : 404

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Book Description
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.

Solar and Stellar Magnetic Activity

Solar and Stellar Magnetic Activity PDF Author: Carolus J. Schrijver
Publisher:
ISBN:
Category : Solar magnetic fields
Languages : en
Pages : 384

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Book Description


Solar and Stellar Magnetic Activity

Solar and Stellar Magnetic Activity PDF Author: Carolus J. Schrijver
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Book Description


Magnetodynamic Phenomena in the Solar Atmosphere

Magnetodynamic Phenomena in the Solar Atmosphere PDF Author: Yutaka Uchida
Publisher: Springer Science & Business Media
ISBN: 9400903154
Category : Science
Languages : en
Pages : 630

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Book Description
These are the Proceedings of Colloquium No. 153 of the International Astro nomical Union, held at Makuhari near Tokyo on May 22 - 26, 1995, and hosted by the National Astronomical Observatory. This meeting was intended to be an interdisciplinary meeting between re searchers of solar and stellar activity, in order for them to exchange the newest information in each field. While each of these areas has seen remarkable advances in recent years, and while the researchers in each field have felt that information from the other's domain would be extremely useful in their own work, there have not been very many opportunities for intensive exchanges of information between these closely related fields. We therefore expected much from this meeting in pro viding stellar researchers with new results of research on the counterparts of their targets of research, spatially and temporarily resolved, as observed on the Sun. Likewise we hoped to provide solar researchers with new results on gigantic ver sions of their targets of research under the very different physical circumstances on other active stars. It was our greatest pleasure that we had wide attendance of experts and active researchers of both research fields from all over the world. This led to extremely interesting talks and very lively discussions, thereby stimulating the exchange of ideas across the fields.

Stellar Magnetic Activity

Stellar Magnetic Activity PDF Author: Carolus J. Schrijver
Publisher:
ISBN:
Category : Stars
Languages : en
Pages : 240

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Book Description


Solar and Stellar Dynamos

Solar and Stellar Dynamos PDF Author: Paul Charbonneau
Publisher: Springer
ISBN: 3642320937
Category : Science
Languages : en
Pages : 240

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Book Description
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.

The Sun as a Guide to Stellar Physics

The Sun as a Guide to Stellar Physics PDF Author: Oddbjørn Engvold
Publisher: Elsevier
ISBN: 0128143355
Category : Science
Languages : en
Pages : 522

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Book Description
The Sun as a Guide to Stellar Physics illustrates the significance of the Sun in understanding stars through an examination of the discoveries and insights gained from solar physics research. Ranging from theories to modeling and from numerical simulations to instrumentation and data processing, the book provides an overview of what we 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 book strengthens the solar–stellar connection and summarizes what we know about the Sun for the stellar, space, and geophysics 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 Observation and Analysis of Stellar Photospheres

The Observation and Analysis of Stellar Photospheres PDF Author: David F. Gray
Publisher: Cambridge University Press
ISBN: 1009085417
Category : Science
Languages : en
Pages : 536

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Book Description
This textbook describes the equipment, observational techniques, and analysis used in the investigation of stellar photospheres. Now in its fourth edition, the text has been thoroughly updated and revised to be more accessible to students. New figures have been added to illustrate key concepts, while diagrams have been redrawn and refreshed throughout. The book starts by developing the tools of analysis, and then demonstrates how they can be applied. Topics covered include radiation transfer, models of stellar photospheres, spectroscopic equipment, how to observe stellar spectra, and techniques for measuring stellar temperatures, radii, surface gravities, chemical composition, velocity fields, and rotation rates. Up-to-date results for real stars are included. Written for starting graduate students or advanced undergraduates, this textbook also includes a wealth of reference material useful to researchers. eBook formats include color imagery while print formats are greyscale only; a wide selection of the color images are available online.

Solar and Stellar Magnetic Fields: Origins and Coronal Effects

Solar and Stellar Magnetic Fields: Origins and Coronal Effects PDF Author: Jan Olof Stenflo
Publisher: Springer
ISBN: 9789400971813
Category : Science
Languages : en
Pages : 0

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Book Description
Traditionally, solar and stellar physics have been two separate branches of astronomy, which independently of each other have developed their own scientific goals and methods. During the last decade, however, we have witnessed a gradual convergence of these two areas: The solar physicists realize more and more that the sun has to be seen as a special case in a large family of stars of various properties. A more complete understanding of the sun can only be achieved by considering it in this broader context. The stellar physicists on the other hand have become aware that the detailed knowledge of the physical processes that the solar physicists have reached has a more general significance and can be applied to a variety of other astrophysical objects. Observational techniques developed in solar work can frequently be adapted for other stars as well. This unified approach to solar and stellar physics is often called the "solar-stellar connection". One main goal of this approach has been to understand the general nature and causes of stellar activity. The pioneering and visionary program to search for activity cycles on other stars started by Olin Wilson at the Mount Wilson Observatory 16 years ago has born fruit: in his sample of 91 stars, cyclic behaviour similar to that of the sun is found to be quite common, but many stars also show irregular activity fluctua.tions of large amplitude.