Solar And Stellar Magnetic Activity
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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.
Solar And Stellar Magnetic Activity
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Author : Carolus J. Schrijver
language : en
Publisher:
Release Date : 2000
Solar And Stellar Magnetic Activity written by Carolus J. Schrijver and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Science categories.
The first comprehensive review and synthesis of current understanding of magnetic fields in the Sun and similar stars.
Magnetodynamic Phenomena In The Solar Atmosphere
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Author : Yutaka Uchida
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-11-11
Magnetodynamic Phenomena In The Solar Atmosphere written by Yutaka Uchida and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11-11 with Science categories.
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
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Author : Carolus J. Schrijver
language : en
Publisher:
Release Date : 1986
Stellar Magnetic Activity written by Carolus J. Schrijver and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Stars categories.
Seismic Investigations Of Solar And Stellar Magnetic Activity
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Author :
language : en
Publisher:
Release Date : 2018
Seismic Investigations Of Solar And Stellar Magnetic Activity written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
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 Fields Origins And Coronal Effects
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Author : Jan Olof Stenflo
language : en
Publisher: Springer
Release Date : 1983-07-31
Solar And Stellar Magnetic Fields Origins And Coronal Effects written by Jan Olof Stenflo and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983-07-31 with Science categories.
Proceedings of IAU Symposium No. 102 held in Zurich, Switzerland, August 2-6, 1982
Magnetodynamic Phenomena In The Solar Atmosphere
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Author : Hugh S. Hudson
language : en
Publisher:
Release Date : 1996
Magnetodynamic Phenomena In The Solar Atmosphere written by Hugh S. Hudson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Solar magnetic fields categories.
A Combined Mg Ii Ca Ii Survey Of Stellar Magnetic Activity In The Solar Neighborhood
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-08-09
A Combined Mg Ii Ca Ii Survey Of Stellar Magnetic Activity In The Solar Neighborhood written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-08-09 with categories.
We use nearly contemporaneus low-resolution IUE observations of Mg II h + k emission and Mount Wilson Observatory Ca II H + K S indices for 33 pairs of observations of lower main sequence stars to formulate a relationship that will permit accurate predictions of S values as a function of (B - V) color and Mg II h + k flux. The resulting relationship is useful because it will extend the set of solar neighborhood stars for which a uniform estimate of chromospheric activity is available to include stars that are not observable from Mount Wilson as well as providing additional estimates of activity levels for stars that are on the Mount Wilson HK Project observing list. Wicklund, B. M. and Donahue, R. A. and Dobson, A. K. and Baliunas, Sallie L. Goddard Space Flight Center NASA-CR-204946, NAS 1.26:204946 NAG5-2444...
Analysis Of Magnetic Activity Cycles In Solar Analogs Using Solar Stellar Spectrograph Data
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Author : Duy Anh N. Doan
language : en
Publisher:
Release Date : 2016
Analysis Of Magnetic Activity Cycles In Solar Analogs Using Solar Stellar Spectrograph Data written by Duy Anh N. Doan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
The Solar-Stellar Spectrograph (SSS) Project includes frequent observations of 30 - 50 Sun-like stars to address a wide variety of questions regarding the nature of stellar magnetic activity cycles. The magnetic activity cycles of 18 stars in the SSS project are analyzed using the Lomb Scargle method of least-squares spectral analysis. Periodograms reveal that out of 18 stars, 9 stars have one magnetic cycle and 6 stars have two magnetic cycles, with periods ranging from 2 years to 17 years. The remaining stars show significant variability but without pronounced periodicity. Most of the detected cycles have a false alarm probability (FAP) well below 10-3 The results for a number of stars are compared and confirmed with earlier observations by Mount Wilson Observatory's project, published by Baliunas et. al. (1995). Four more stars are added to the plot of activity cycle period - rotational period relation by Bohm-Vitense (2006), and they all lie on either the active sequence or the inactive sequence. This result, together with the fact that several stars have two different cycles lying on different sequences, lends more evidence to the hypothesis that stars have multiple dynamos but are dominated by one of them.