Dynamics Of The Sun And Stars
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The Dynamic Sun
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Author : A. Hanslmeier
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
The Dynamic Sun written by A. Hanslmeier 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.
Our Sun is the nearest star and thus an ideal laboratory to study dynamic processes which are related to solar terrestrial physics. The topics addressed in this book cover solar MHD and generation of acoustic waves, as well as physical parameters that are suited to describing solar activity and could serve as proxies for space weather forecasting. The influence of solar activity (radiation and solar wind) on telecommunication systems, satellite missions etc. is also discussed. In short, contribution reports are given on various topics in solar physics. The book covers solar physics from the photosphere to space weather influences. The intended level of readership is aimed at students working in this or related fields, professionals, and astronomers who wish to acquire some basic knowledge in the field of solar terrestrial relations, which is provided in the review articles.
The Rotation Of Sun And Stars
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Author : Jean-Pierre Rozelot
language : en
Publisher: Springer Science & Business Media
Release Date : 2009-01-08
The Rotation Of Sun And Stars written by Jean-Pierre Rozelot 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 2009-01-08 with Science categories.
The Sun and stars rotate in di?erent ways and at di?erent velocity rates. The knowledge of how they rotate is important in understanding the formation and evolution of stars and their structure. The closest star to our Earth, the Sun, is a good laboratory to study in detail the rotation of a G star and allows to test new ideas and develop new techniques to study stellar rotation. More or less massive, more or lessevolved objects, however, can have averydi?erent rotation rate, structure and history. In recent years our understanding of the rotation of the Sun has greatly improved. The Sun has a well-known large-scale rotation, which can be m- sured thanks to visible features across the solar disk, such as sunspots, or via spectroscopy. In addition, several studies cast light on di?erential rotation in the convective zone and on meridional circulation in the radiative zone of the Sun. Even the rotation of the core of the Sun can now be studied thanks to various methods, such as dynamics of the gravitational moments and of course, helioseismology, through g-modes analysis. Moreover, the magnetic ?eld is strongly linked to the matter motions in the solar plasma. The solar magnetic ?eld can be measured only at the surface or in theupperlayers.Itistheproductoftheinternaldynamoorofthelocaldynamos if they exist – in any case magnetic ?eld and rotation cannot thus be separated.
Dynamics Of The Sun And Stars
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Author : Mário J. P. F. G. Monteiro
language : en
Publisher: Springer Nature
Release Date : 2020-12-18
Dynamics Of The Sun And Stars written by Mário J. P. F. G. Monteiro and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-12-18 with Science categories.
These are the proceedings of a meeting celebrating Michael Thompson's seminal work on solar and stellar physics, as well as his major contributions to the development of the National Center for Atmospheric Research. The meeting also marked Michael J. Thompson’s untimely death in October 2018. Michael played a key role in the development of helioseismology and its application to the study of the structure and dynamics of the solar interior, and he provided a strong foundation for the extension of seismic studies for other stars. After focusing for several years on more administrative activities, he was returning to leading the seismic studies of solar interior rotation and he was deeply involved in the understanding of the dynamics of the core of stars, when his life was tragically lost. The conference focused on dynamical aspects of the sun and stars, based on the large amount of data available on solar and stellar oscillations, and the extensive and detailed modelling now becoming feasible. Combining observations, seismic analysis, and modelling the meeting and this book serve as a fitting memorial to a close colleague and friend, much missed.
An Introduction To The Sun And Stars
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Author : Simon F. Green
language : en
Publisher: Cambridge University Press
Release Date : 2004-02-26
An Introduction To The Sun And Stars written by Simon F. Green 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 2004-02-26 with Science categories.
Compiled by a team of experts, this textbook has been designed for elementary university courses in astronomy and astrophysics. It starts with a detailed discussion of our nearest star, the Sun, and describes how solar physicists have come to understand its internal workings. It then considers how astronomers go about studying the basic physical properties and life-cycles of more distant stars, and culminates with a discussion of the formation of exotic objects such as neutron stars and black holes. Written in an accessible style that avoids complex mathematics, and illustrated in colour throughout, this book is suitable for self-study and will appeal to amateur astronomers as well as undergraduate students. It contains numerous helpful learning features such as boxed summaries, student exercises with full solutions, and a glossary of terms. The book is also supported by a website hosting further teaching materials.
The Pulsations Of The Sun And The Stars
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Author : Jean-Pierre Rozelot
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-07-03
The Pulsations Of The Sun And The Stars written by Jean-Pierre Rozelot 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 2011-07-03 with Science categories.
This volume of lecture notes brings together the knowledge on pulsations of the Sun and the stars, with a particular emphasis on recent observations and modelling, and on the influence of pulsations of other physical processes. The book begins with an extensive introduction to helioseismology. The solar cycle and gravity modes are discussed before the focus is widened from helioseismology to asteroseismology which is detailed in a series of specific chapters. Based on courses given at a graduate school, these tutorial lecture notes will be of interest and useful to a rather broad audience of scientists and students.
Seismology Of The Sun And The Distant Stars
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Author : D.O. Gough
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Seismology Of The Sun And The Distant Stars 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.
The history of modern helioseismology is only ten years old. In 1975 F-L Deubner separated for the first time the spatial and temporal pro perties of the solar five-minute oscillations, and was thus able to measure the dispersion relation for high-degree acoustic modes (p modes). The diagnostic value of these observations was appreciated immediately. Indeed, by comparing the observed relation with computations that had already been carried out by R.K. Ulrich, and subsequently by H. Ando and Y. Osaki, it was recognised that contemporary solar models that had been constructed with the low observed neutrino flux in mind were too hot in their outer layers. Moreover, their convection zones were too shallow. Since that time the observations have improved. There is now good reason to suppose that a sufficiently careful analysis will lead to a direct determination of the helium abundance in the solar convection zone, especially when foreseeable further improvements in the observations have been achieved. The data will also provide useful diagnostics of the uncertain equation of state of partially ionized plasmas, and they might also enable us to measure the large-scale structure of the convec tive flow.
Dynamic Sun
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Author : B. N. Dwivedi
language : en
Publisher: Cambridge University Press
Release Date : 2003-05
Dynamic Sun written by B. N. Dwivedi 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 2003-05 with Science categories.
Dynamic Sun presents a comprehensive and authoritative overview of the Sun, from its deep core to the outer corona, and the solar wind. Each chapter is written by leading scientists in solar physics. Chapters deal with solar models and neutrinos, seismic Sun, rotation of the solar interior, helioseismic tomography, solar dynamo, spectro-polarimetry, solar photosphere and convection, dynamics and heating of the solar chromosphere, solar transition region, solar MHD, solar activity, particle acceleration, radio observations of explosive energy releases on the Sun, coronal seismology, coronal heating, VUV solar plasma diagnostics and the solar wind. Solar observing facilities are presented in the last chapter. With an introduction by eminent astrophysicist Eugene Parker, the twenty chapters of this book are all fully illustrated and have comprehensive reference lists. The book covers all major topics in solar physics, and is suitable for graduate students and researchers in solar physics, astrophysics and astronomy.
Solar Dynamics And Magnetism From The Interior To The Atmosphere
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Author : Nagi N. Mansour
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-12-03
Solar Dynamics And Magnetism From The Interior To The Atmosphere written by Nagi N. Mansour 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 2013-12-03 with Science categories.
Discusses recent advances and new problems in the exploration of the Sun's interior structure, solar dynamics and dynamo, mechanisms of sunspot and active regions formation, sources of solar irradiance variations and links between the subsurface dynamics, flaring and CME activity. NASA's Solar Dynamics Observatory (SDO) mission has provided a large amount of new data on solar dynamics and magnetic activities during the rising phase of the current and highly unusual solar cycle. These data are complemented by the continuing SOHO mission and by ground-based observatories that include the GONG helioseismology network and the New Solar Telescope. Also, the observations are supported by realistic numerical simulations on supercomputers. This unprecedented amount of data provides a unique opportunity for multi-instrument investigations that address fundamental problems of the origin of solar magnetic activity at various spatial and temporal scales. This book demonstrates that the synergy of high-resolution multi-wavelength observations and simulations is a key to uncovering the long-standing puzzles of solar magnetism and dynamics. This volume is aimed at researchers and graduate students active in solar physics and space science. Originally published in Solar Physics journal, Vol. 287/1-2, 2013.
Cartography Of The Sun And The Stars
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Author : Jean-Pierre Rozelot
language : en
Publisher: Springer
Release Date : 2016-03-11
Cartography Of The Sun And The Stars written by Jean-Pierre Rozelot and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-03-11 with Science categories.
The mapping of the surface of stars requires diverse skills, analysis techniques and advanced modeling, i.e. the collaboration of scientists in various specialties. This volume gives insights into new techniques allowing for the first time to obtain resolved images of stars. It takes stock of what has been achieved so far in Chile, on the ESO VLTI instrument or, in the States, on the CHARA instrument. In recent times interferometry, combined with adaptive optics has allowed to reconstruct images of stars. Besides the Sun (of course) by now five stars have been resolved in detail. In addition to interferometry, this book highlights techniques used for mapping the surfaces of stars using photometry made by space observatories; Zeeman- and Doppler Imaging; mapping the surface element abundances via spectroscopy. This book will also take stock of the best images of the solar surface, made by connecting the differential rotation to the underlying physical parameters derived from helioseismology. Recent measurements of flattening of the solar surface by SDO showed that the Sun’s shape is linked to the rotation of the core. It is shown how such a result is generalizable to the stars.
Physics Formation And Evolution Of Rotating Stars
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Author : Andre Maeder
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-12-19
Physics Formation And Evolution Of Rotating Stars written by Andre Maeder 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 2008-12-19 with Science categories.
Rotation is ubiquitous at each step of stellar evolution, from star formation to the final stages, and it affects the course of evolution, the timescales and nucleosynthesis. Stellar rotation is also an essential prerequisite for the occurrence of Gamma-Ray Bursts. In this book the author thoroughly examines the basic mechanical and thermal effects of rotation, their influence on mass loss by stellar winds, the effects of differential rotation and its associated instabilities, the relation with magnetic fields and the evolution of the internal and surface rotation. Further, he discusses the numerous observational signatures of rotational effects obtained from spectroscopy and interferometric observations, as well as from chemical abundance determinations, helioseismology and asteroseismology, etc. On an introductory level, this book presents in a didactical way the basic concepts of stellar structure and evolution in "track 1" chapters. The other more specialized chapters form an advanced course on the graduate level and will further serve as a valuable reference work for professional astrophysicists.