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Author : Robert M. Close
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (23 download)
Download or read book Quiet-sun Coronal Fields and the Magnetic Carpet written by Robert M. Close and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Karen A. Meyer
Publisher :
ISBN 13 :
Total Pages : 181 pages
Book Rating : 4.:/5 (817 download)
Download or read book A Non-linear Force-free Field Model for the Solar Magnetic Carpet written by Karen A. Meyer and published by . This book was released on 2012 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: The magnetic carpet is defined to be the small-scale photospheric magnetic field of the quiet Sun. Observations of the magnetic carpet show it to be highly dynamic, where the time taken for all flux within the magnetic carpet to be replaced is on the order of just a few hours. The magnetic carpet is continually evolving due to the Sun's underlying convection and the interaction of small-scale magnetic features with one another. Due to this, the small-scale coronal field of the magnetic carpet is also expected to be highly dynamic and complex. Previous modelling has shown that much of the flux from the magnetic carpet is stored along low-lying closed connections between magnetic features. This indicates that significant coronal heating could occur low down in the small-scale corona. In this thesis, a new two-component magnetic field model is developed for the evolution of the magnetic carpet. A 2D model is constructed to realistically simulate the evolution of the photospheric field of the magnetic carpet, where many of the parameters for the model are taken from observational studies. The photospheric model contains a granular and supergranular flow profile to describe the motion of the small-scale magnetic features, and includes the processes of flux emergence, cancellation, coalescence and fragmentation. This 2D model then couples to a 3D model as the lower boundary condition, which drives the evolution of the coronal field through a series of non-linear force-free states, via a magnetofrictional relaxation technique. We first apply the magnetofrictional technique to consider the coronal evolution of three basic small-scale photospheric processes: emergence, cancellation and flyby. We consider the interaction of the magnetic features with an overlying coronal magnetic field, and quantify magnetic energy build-up, storage and dissipation. The magnetofrictional technique is then applied to synthetic magnetograms produced from the 2D model, to simulate the evolution of the coronal field in a situation involving many hundreds of magnetic features. We conduct a preliminary analysis of the resultant 3D simulations, considering the magnetic energy stored and dissipated, as well as regions of enhanced velocity and electric current density within the coronal volume. The simulations show that the so-called 'quiet Sun' is not quiet and a significant amount of complex interactions take place.
Author : Itahiza Francisco Domínguez Cerdeña
Publisher :
ISBN 13 : 9783936586312
Total Pages : 111 pages
Book Rating : 4.5/5 (863 download)
Download or read book Quiet Sun Magnetic Fields written by Itahiza Francisco Domínguez Cerdeña and published by . This book was released on 2004 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Steven Tomczyk
Publisher : Springer
ISBN 13 : 1493920383
Total Pages : 217 pages
Book Rating : 4.4/5 (939 download)
Download or read book Coronal Magnetometry written by Steven Tomczyk and published by Springer. This book was released on 2014-10-30 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Captures advances being made in the field of coronal magnetism, from theory to observations and instrumentation. This volume is a collection of research articles on the subject of the solar corona, and particularly, coronal magnetism. The book was motivated by the Workshop on Coronal Magnetism: Connecting Models to Data and the Corona to the Earth, which was held 21 - 23 May 2012 in Boulder, Colorado, USA. This workshop was attended by approximately 60 researchers. Articles from this meeting are contained in this topical issue, but the topical issue also contains contributions from researchers not present at the workshop. This volume is aimed at researchers and graduate students active in solar physics. Originally published in Solar Physics, Vol. 288, Issue 2, 2013 and Vol. 289, Issue 8, 2014.
Author : C. Denker
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (463 download)
Download or read book Dynamics of Quiet Sun Magnetic Fields written by C. Denker and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kenneth H. Schatten
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (243 download)
Download or read book Corona written by Kenneth H. Schatten and published by . This book was released on 1971 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dermott J. Mullan
Publisher : CRC Press
ISBN 13 : 1000625079
Total Pages : 435 pages
Book Rating : 4.0/5 (6 download)
Download or read book Physics of the Sun written by Dermott J. Mullan and published by CRC Press. This book was released on 2022-09-13 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: With an emphasis on numerical modelling, Physics of the Sun: A First Course presents a quantitative examination of the physical structure of the Sun and the conditions of its extended atmosphere. It gives step-by-step instructions for calculating the numerical values of various physical quantities in different regions of the Sun. Fully updated throughout, with the latest results in solar physics, this second edition covers a wide range of topics on the Sun and stellar astrophysics, including the structure of the Sun, solar radiation, the solar atmosphere, and Sun-space interactions. It explores how the physical conditions in the visible surface of the Sun are determined by the opacity of the material in the atmosphere. It also presents the empirical properties of convection in the Sun, discusses the physical conditions which must be satisfied for nuclear reactions to occur in the core, and describes how radiation transports energy from the core outwards. This text enables a practical appreciation of the physical models of solar processes. Numerical modelling problems and step-by-step instructions are featured throughout, to empower students to calculate, using their own codes, the interior structure of different parts of the Sun and the frequencies of p-modes and g-modes. They encourage a firm grasp of the numerical values of actual physical parameters as a function of radial location in the Sun. It is an ideal introduction to solar physics for advanced undergraduate and graduate students in physics and astronomy, in addition to research professionals looking to incorporate modelling into their practises. Extensive bibliographies at the end of each chapter enable the reader to explore the latest research articles in the field. Features: Fully updated with the latest results from the spacecraft Hinode, Stereo, Solar Dynamics Observatory (SDO), Interface Region Imaging Spectrograph (IRIS), and Parker Solar Probe Presents step-by-step explanations for calculating numerical models of the photosphere, convection zone, and radiative interior with exercises and simulation problems to test learning Describes the structure of polytropic spheres and the acoustic power in the Sun and the process of thermal conduction in different physical conditions
Author : Harold Zirin
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (563 download)
Download or read book Properties of the Quiet Sun Magnetic Fields as Reveald Through the Spectrovideomagnetograph written by Harold Zirin and published by . This book was released on 2000* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Markus J. Aschwanden
Publisher : Springer
ISBN 13 : 3030139565
Total Pages : 714 pages
Book Rating : 4.0/5 (31 download)
Download or read book New Millennium Solar Physics written by Markus J. Aschwanden and published by Springer. This book was released on 2019-05-22 with total page 714 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a follow-on book to the introductory textbook "Physics of the Solar Corona" previously published in 2004 by the same author, which provided a systematic introduction and covered mostly scientific results from the pre-2000 era. Using a similar structure as the previous book the second volume provides a seamless continuation of numerous novel research results in solar physics that emerged in the new millennium (after 2000) from the new solar missions of RHESSI, STEREO, Hinode, CORONAS, and the Solar Dynamics Observatory (SDO) during the era of 2000-2018. The new solar space missions are characterized by unprecedented high-resolution imaging, time resolution, spectral capabilities, stereoscopy and tomography, which reveal the intricate dynamics of magneto-hydrodynamic processes in the solar corona down to scales of 100 km. The enormous amount of data streaming down from SDO in Terabytes per day requires advanced automated data processing methods. The book focuses exclusively on new research results after 2000, which are reviewed in a comprehensive manner, documented by over 3600 literature references, covering theory, observations, and numerical modeling of basic physical processes that are observed in high-temperature plasmas of the Sun and other astrophysical objects, such as plasma instabilities, coronal heating, magnetic reconnection processes, coronal mass ejections, plasma waves and oscillations, or particle acceleration.
Author : Philip Judge
Publisher : Springer Nature
ISBN 13 : 3031462734
Total Pages : 275 pages
Book Rating : 4.0/5 (314 download)
Download or read book The Problem of Coronal Heating written by Philip Judge and published by Springer Nature. This book was released on with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. Birn
Publisher : Cambridge University Press
ISBN 13 : 1139460102
Total Pages : 302 pages
Book Rating : 4.1/5 (394 download)
Download or read book Reconnection of Magnetic Fields written by J. Birn and published by Cambridge University Press. This book was released on 2007-01-04 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reconnection of magnetic fields is one of the most fascinating processes in plasma physics, responsible for phenomena such as solar flares and magnetospheric substorms. The concept of reconnection has developed through recent advances in exploring the magnetospheres of the Sun and Earth through theory, computer simulations and spacecraft observations. The great challenge in understanding it stems from balancing the large volumes of plasma and magnetic fields involved with the energy release with the physical mechanism which relies on the strongly localized behavior of charged particles. This book, edited by and with contributions from leading scientists in the field, provides a comprehensive overview of recent theoretical and observational findings concerning the physics of reconnection and the complex structures that may give rise to, or develop from, reconnection. It is intended for researchers and graduate students interested in the dynamics of plasmas.
Author : Yohsuke Kamide
Publisher : Springer Science & Business Media
ISBN 13 : 3540463151
Total Pages : 539 pages
Book Rating : 4.5/5 (44 download)
Download or read book Handbook of the Solar-Terrestrial Environment written by Yohsuke Kamide and published by Springer Science & Business Media. This book was released on 2007-08-17 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a star in the universe, the Sun is constantly releas- cover a wide range of time and spatial scales, making ?? ing energy into space, as much as ?. ? ?? erg/s. Tis observations in the solar-terrestrial environment c- energy emission basically consists of three modes. Te plicated and the understanding of processes di?cult. ?rst mode of solar energy is the so-called blackbody ra- In the early days, the phenomena in each plasma diation, commonly known as sunlight, and the second region were studied separately, but with the progress mode of solar electromagnetic emission, such as X rays of research, we realized the importance of treating and UV radiation, is mostly absorbed above the Earth’s the whole chain of processes as an entity because of stratosphere. Te third mode of solar energy emission is strong interactions between various regions within in the form of particles having a wide range of energies the solar-terrestrial system. On the basis of extensive from less than ? keV to more than ? GeV. It is convenient satellite observations and computer simulations over to group these particles into lower-energy particles and thepasttwo decades, it hasbecomepossibleto analyze higher-energy particles, which are referred to as the so- speci?cally the close coupling of di?erent regions in the lar wind and solar cosmic rays, respectively. solar-terrestrial environment.
Author : Penny Martens
Publisher : Elsevier
ISBN 13 : 0080537170
Total Pages : 461 pages
Book Rating : 4.0/5 (85 download)
Download or read book Multi-Wavelength Observations of Coronal Structure and Dynamics written by Penny Martens and published by Elsevier. This book was released on 2002-10-21 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: These are the Proceedings of the Yohkoh 10th Anniversary Meeting, a COSPAR Colloquium held in Kona, Hawaii, USA, on January 20-24, 2002. The title of the meeting was Multi-Wavelength Observations of Coronal Structure and Dynamics. In these proceedings the many and varied advances of the dynamics solar atmosphere in the past ten years of observations by Yohkoh have been reviewed.
Author : Eric Priest
Publisher : Cambridge University Press
ISBN 13 : 110778266X
Total Pages : 581 pages
Book Rating : 4.1/5 (77 download)
Download or read book Magnetohydrodynamics of the Sun written by Eric Priest and published by Cambridge University Press. This book was released on 2014-04-07 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetohydrodynamics of the Sun is a completely new up-to-date rewrite from scratch of the 1982 book Solar Magnetohydrodynamics, taking account of enormous advances in understanding since that date. It describes the subtle and complex interaction between the Sun's plasma atmosphere and its magnetic field, which is responsible for many fascinating dynamic phenomena. Chapters cover the generation of the Sun's magnetic field by dynamo action, magnetoconvection and the nature of photospheric flux tubes such as sunspots, the heating of the outer atmosphere by waves or reconnection, the structure of prominences, the nature of eruptive instability and magnetic reconnection in solar flares and coronal mass ejections, and the acceleration of the solar wind by reconnection or wave-turbulence. It is essential reading for graduate students and researchers in solar physics and related fields of astronomy, plasma physics and fluid dynamics. Problem sets and other resources are available at www.cambridge.org/9780521854719.
Author : C. T. Russell
Publisher : Cambridge University Press
ISBN 13 : 1107098823
Total Pages : 499 pages
Book Rating : 4.1/5 (7 download)
Download or read book Space Physics written by C. T. Russell and published by Cambridge University Press. This book was released on 2016-07-07 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook provides advanced undergraduates and graduates with up-to-date coverage of space physics from the Sun to the interstellar medium. Clear explanations of physical processes are presented alongside major new discoveries gained from space missions. End-of-chapter problems and specially developed computer-based exercises allow students to put the theory into practice.
Author : Yuhong Fan
Publisher : Springer Science & Business Media
ISBN 13 : 146143761X
Total Pages : 204 pages
Book Rating : 4.4/5 (614 download)
Download or read book Solar Flare Magnetic Fields and Plasmas written by Yuhong Fan and published by Springer Science & Business Media. This book was released on 2012-03-28 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is devoted to the dynamics and diagnostics of solar magnetic fields and plasmas in the Sun’s atmosphere. Five broad areas of current research in Solar Physics are presented: (1) New techniques for incorporating radiation transfer effects into three-dimensional magnetohydrodynamic models of the solar interior and atmosphere, (2) The connection between observed radiation processes occurring during flares and the underlying flare energy release and transport mechanisms, (3) The global balance of forces and momenta that occur during flares, (4) The data-analysis and theoretical tools needed to understand and assimilate vector magnetogram observations and (5) Connecting flare and CME phenomena to the topological properties of the magnetic field in the Solar Atmosphere. The role of the Sun’s magnetic field is a major emphasis of this book, which was inspired by a workshop honoring Richard C. (Dick) Canfield. Dick has been making profound contributions to these areas of research over a long and productive scientific career. Many of the articles in this topical issue were first presented as talks during this workshop and represent substantial original work. The workshop was held 9 – 11 August 2010, at the Center Green campus of the National Center for Atmospheric Research (NCAR) in Boulder, Colorado. This volume is aimed at researchers and graduate students active in solar physics, solar-terrestrial physics and magneto-hydrodynamics. Previously published in Solar Physics journal, Vol. 277/1, 2012.
Author : J.C. Toro Iniesta
Publisher : Springer Science & Business Media
ISBN 13 : 1402045263
Total Pages : 303 pages
Book Rating : 4.4/5 (2 download)
Download or read book The Many Scales in the Universe written by J.C. Toro Iniesta and published by Springer Science & Business Media. This book was released on 2006-02-23 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: All branches of astrophysics are encompassed in this book, from the largest scales and cosmology to the solar system and the Sun, through the galaxies and the stars, including a section on astronomical instrumentation. Experts from across the world ‘speak’ in a single book about the most recent, exciting results from their fields. A CD-ROM accompanies the book opening a panorama of astrophysics today.
