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The past two decades have seen remarkable advances in observations of sunspots and their magnetic fields, in imaging of spots and fields in distant stars and in associated theoretical models and numerical simulations. This book provides a comprehensive combined account of the properties of sunspots and starspots. It covers both observations and theory, and describes the intricate fine structure of a sunspot's magnetic field and the prevalence of polar spots on stars. The book includes a substantial historical introduction and treats solar and stellar magnetic activity, dynamo models of magnetic cycles, and the influence of solar variability on the Earth's magnetosphere and climate. This volume is a valuable reference for graduate students and specialists in solar and stellar physics, astronomers, geophysicists, space physicists and experts in fluid dynamics and plasma physics.
Sunspots --- Starspots --- Taches solaires --- Sunspots. --- Starspots. --- Stellar spots --- Stellar activity --- Sun-spots --- Solar activity
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The last thirty years have seen great leaps forward in the subject of magnetoconvection. Computational techniques can now explain exotic nonlinear behaviour, transition to chaos and the formation of structures that can be observed on the surface of the Sun. Here, two leading experts present the current state of knowledge of the subject. They provide a mathematical and numerical treatment of the interactions between electrically conducting fluids and magnetic fields that lead to the complex structures and rich behaviour observed on the Sun and other stars, as well as in the interiors of planets like the Earth. The authors' combined analytical and computational approach provides a model for the study of a wide range of related problems. The discussion includes bifurcation theory, chaotic behaviour, pattern formation in two and three dimensions, and applications to geomagnetism and to the properties of sunspots and other features at the solar surface.
Magnetic fields. --- Solar magnetic fields. --- Geomagnetism. --- Magnetohydrodynamics. --- Relativistic fluid dynamics.
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Chaotic behavior in systems --- Congresses --- 539.22 --- -Chaos in systems --- Chaos theory --- Chaotic motion in systems --- Differentiable dynamical systems --- Dynamics --- Nonlinear theories --- System theory --- Isotropy and anisotropy in molecular structure. Order-disorder. Texture of molecular systems and materials (especially synthetics) in general --- -Isotropy and anisotropy in molecular structure. Order-disorder. Texture of molecular systems and materials (especially synthetics) in general --- 539.22 Isotropy and anisotropy in molecular structure. Order-disorder. Texture of molecular systems and materials (especially synthetics) in general --- -539.22 Isotropy and anisotropy in molecular structure. Order-disorder. Texture of molecular systems and materials (especially synthetics) in general --- Chaos in systems --- Chaotic behavior in systems - Congresses --- -Congresses
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Helioseismology has enabled us to probe the internal structure and dynamics of the Sun, including how its rotation varies in the solar interior. The unexpected discovery of an abrupt transition - the tachocline - between the differentially rotating convection zone and the uniformly rotating radiative interior has generated considerable interest and raised many fundamental issues. This volume contains invited reviews from distinguished speakers at the first meeting devoted to the tachocline, held at the Isaac Newton Institute. It provides a comprehensive account of the understanding of the properties and dynamics of the tachocline, including both observational results and major theoretical issues, involving both hydrodynamic and magnetohydrodynamic behaviour. The Solar Tachocline is a valuable reference for researchers and graduate students in astrophysics, heliospheric physics and geophysics, and the dynamics of fluids and plasmas.
Helioseismology. --- Solar dynamics --- Solar seismology --- Astroseismology --- Sun. --- Solar system
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Stars --- Disks (Astrophysics) --- Quasars --- Atmospheres --- Solar magnetic fields
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