Problems Of Solar And Stellar Oscillations
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Problems Of Solar And Stellar Oscillations
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Author : D.O. Gough
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Problems Of Solar And Stellar Oscillations written by D.O. Gough 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 2012-12-06 with Science categories.
D. O. GOUGH Institute of Astronomy. Madingley Road. Cambridge. U. K. IAU Colloquium 66 on 'Problems of Solar and Stellar Oscillations' was held at the Crimean Astrophysical Observatory, U. S. S. R. , on 1-5 September, 1981. The principal purpose of the colloquium was to study the low-amplitude oscillations of the Sun and, to a lesser extent, to consider similar oscillations of other stars. Much of the emphasis of the discussions was on the diagnostic value of the oscilla tions. In the last few years we have become aware that the frequencies of the five-minute modes of high degree, which constitute the major component of the oscillations discovered twenty years ago by Evans and Michaud, can be used to put quite tight bounds on the stratification of the solar convection zone. These permit a calibration of solar models computed from so-called standard evolution theory. Modes of low degree penetrate beneath the convection zone to the core of the Sun, and can in principle test the evolution theory. Therefore there was considerable interest in the reports of the latest observations of such modes. Broadly speaking, those observations confirm the cali bration by the high-degree modes, but there remain some systematic discrepancies that demand some revision of the theory. Besides the gross aspects of evolution theory, there are also more intricate details to be understood.
Problems Of Solar And Stellar Oscillations
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Author : D O Gough
language : en
Publisher:
Release Date : 1983-02-28
Problems Of Solar And Stellar Oscillations written by D O Gough and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983-02-28 with categories.
Problems Of Solar And Stellar Oscillations
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Author : D.O. Gough
language : en
Publisher:
Release Date : 1983
Problems Of Solar And Stellar Oscillations written by D.O. Gough and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.
Problems Of Solar And Stellar Oscillations
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Author : D. O. Gough
language : en
Publisher:
Release Date : 1983
Problems Of Solar And Stellar Oscillations written by D. O. Gough and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Oscillations categories.
Score 96 Solar Convection And Oscillations And Their Relationship
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Author : F.P. Pijpers
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Score 96 Solar Convection And Oscillations And Their Relationship written by F.P. Pijpers 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 2012-12-06 with Science categories.
This volume contains the reviews and poster papers presented at the workshop Solar Convection and Oscillations and their Relationship: SCORe '96, held in Arhus, Denmark, May 27 - 31, 1996. The aim of this workshop was to bring together experts in the fields of convection and helioseismology, and to stimulate collaborations and joint research. The participation to this workshop was purposely kept limited in order to provide optimal conditions for informal discussions. In autumn of 199,5 the long-awaited GONG network of solar telescopes became fully operational and the first data already show significant improvement over existing datasets on solar oscillations. Furthermore, in December of 1995 the satellite SOHO was launched which, together with GONG, provides a major step forward in both the quantity and the quality of available solar oscillation data. It is with this in mind that we decided to organize the workshop to prepare for the optimal use of this wealth of data, with which to deepen our understanding of solar structure and specifically, of one of the longest-standing problems in solar and stellar modelling: the treatment of convection.
Asteroseismic Data Analysis
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Author : Sarbani Basu
language : en
Publisher: Princeton University Press
Release Date : 2017-09-05
Asteroseismic Data Analysis written by Sarbani Basu and has been published by Princeton University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-09-05 with Science categories.
Studies of stars and stellar populations, and the discovery and characterization of exoplanets, are being revolutionized by new satellite and telescope observations of unprecedented quality and scope. Some of the most significant advances have been in the field of asteroseismology, the study of stars by observation of their oscillations. Asteroseismic Data Analysis gives a comprehensive technical introduction to this discipline. This book not only helps students and researchers learn about asteroseismology; it also serves as an essential instruction manual for those entering the field. The book presents readers with the foundational techniques used in the analysis and interpretation of asteroseismic data on cool stars that show solar-like oscillations. The techniques have been refined, and in some cases developed, to analyze asteroseismic data collected by the NASA Kepler mission. Topics range from the analysis of time-series observations to extract seismic data for stars to the use of those data to determine global and internal properties of the stars. Reading lists and problem sets are provided, and data necessary for the problem sets are available online. The first book to describe in detail the different techniques used to analyze the data on stellar oscillations, Asteroseismic Data Analysis offers an invaluable window into the hearts of stars. Introduces the asteroseismic study of stars and the theory of stellar oscillations Describes the analysis of observational (time-domain) data Examines how seismic parameters are extracted from observations Explores how stellar properties are determined from seismic data Looks at the “inverse problem,” where frequencies are used to infer internal structures of stars
Solar And Stellar Variability Iau S264
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Author : Alexander G. Kosovichev
language : en
Publisher: Cambridge University Press
Release Date : 2010-03-06
Solar And Stellar Variability Iau S264 written by Alexander G. Kosovichev 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 2010-03-06 with Science categories.
Understanding the physical mechanisms of solar variability and its effect on Earth and the planets is a central and long-standing problem of astronomy and astrophysics. Variability of a similar nature has been observed in other stars, and investigating their similarities and differences is essential to helping us understand the underlying mechanisms and their impacts on planets. During the past decade multi-wavelength data from several solar and stellar space missions, together with ground-based observations, have provided tremendous amounts of new information about the physical processes on the Sun and solar-type stars. Solar observations have revealed interesting connections between the cyclic variations of the structure, interior dynamics, surface magnetism and coronal phenomena, but it is still unclear where and how magnetic fields are generated in the Sun, and why it has a regular 22-year magnetic cycle. IAU Symposium 264 discusses key observational results, new theoretical ideas and models which address these subjects.
A Concise History Of Solar And Stellar Physics
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Author : Jean-Louis Tassoul
language : en
Publisher: Princeton University Press
Release Date : 2014-10-05
A Concise History Of Solar And Stellar Physics written by Jean-Louis Tassoul and has been published by Princeton University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-10-05 with Science categories.
This book provides a comprehensive overview of the history of ideas about the sun and the stars, from antiquity to modern times. Two theoretical astrophysicists who have been active in the field since the early 1960s tell the story in fluent prose. About half of the book covers most of the theoretical research done from 1940 to the close of the twentieth century, a large body of work that has to date been little explored by historians. The first chapter, which outlines the period from about 3000 B.C. to 1700 A.D., shows that at every stage in history human beings have had a particular understanding of the sun and stars, and that this has continually evolved over the centuries. Next the authors systematically address the immense mass of observations astronomy accumulated from the early seventeenth century to the early twentieth. The remaining four chapters examine the history of the field from the physicists perspective, the emphasis being on theoretical work from the mid-1840s to the late 1990s--from thermodynamics to quantum mechanics, from nuclear physics and magnetohydrodynamics to the remarkable advances through to the late 1960s, and finally, to more recent theoretical work. Intended mainly for students and teachers of astronomy, this book will also be a useful reference for practicing astronomers and scientifically curious general readers.
Solar Modeling
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Author : Akif Baha Balantekin
language : en
Publisher: World Scientific
Release Date : 1995-10-12
Solar Modeling written by Akif Baha Balantekin and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995-10-12 with categories.
This volume contains the proceedings of a workshop on Solar Modeling held at the Institute for Nuclear Theory, University of Washington, Seattle during the Spring of 1994.This workshop was part of a program which concentrated on the nuclear, particle, and astrophysics of the solar neutrino problem, with particular emphasis on the experimental goals and opportunities.The workshop covered the physics of the standard and alternative solar models, the present status of the solar neutrino problem, the existing uncertainties in the nuclear and atomic physics (opacity) of the standard solar model, and constraints from helioseismology. Among the topics discussed were: the evolution of the rotating sun; solar model independent neutrino observables; the role of convective overshoot and diffusion; and turbulence in the solar interior and the role of g-modes. It was unique in bringing together nuclear, particle, atomic physicists and astrophysicists working on this problem.
Plasma Astrophysics
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Author : Arnold O. Benz
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Plasma Astrophysics written by Arnold O. Benz 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 2012-12-06 with Science categories.
This textbook is intended as an introduction to the physics of solar and stellar coronae, emphasizing kinetic plasma processes. It is addressed to observational astronomers, graduate students, and advanced undergraduates without a back ground in plasma physics. Coronal physics is today a vast field with many different aims and goals. Sort ing out the really important aspects of an observed phenomenon and using the physics best suited for the case is a formidable problem. There are already several excellent books, oriented toward the interests of astrophysicists, that deal with the magnetohydrodynamics of stellar atmospheres, radiation transport, and radiation theory. In kinetic processes, the different particle velocities play an important role. This is the case when particle collisions can be neglected, for example in very brief phenomena - such as one period of a high-frequency wave - or in effects produced by energetic particles with very long collision times. Some of the most persistent problems of solar physics, like coronal heating, shock waves, flare energy release, and particle acceleration, are likely to be at least partially related to such pro cesses. Study of the Sun is not regarded here as an end in itself, but as the source of information for more general stellar applications. Our understanding of stellar processes relies heavily, in turn, on our understanding of solar processes. Thus an introduction to what is happening in hot, dilute coronae necessarily starts with the plasma physics of our nearest star.
