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3 produkter
3 produkter
3 108 kr
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Most stars appear to show some degree of magnetic activity. Varying magnetic fields show up in the familiar sun-spot cycle and in similar activity in other cool stars. Many hot stars carry steady magnetic fields stronger than the average solar field and are well described as oblique rotators. A similar model is applicable to the rapidly rotating, enormously dense neutron stars with their far stronger fields, observed as radio and X-ray pulsars. Galactic magnetic fields may play a crucial role in star formation, and in the spectacular behaviour in galactic nuclei. Cosmical magnetism in general is a rapidly developing field, and this book has grown out of the lifelong work of an outstanding researcher in the area. An authoritative account with broad astronomical scope, its thorough, careful and well-argued approach makes it a fine addition to the professional literature. Most of the important topics are treated in mathematical depth with references to other relevant literature. Some of the studies, especially those on accretion discs, dynamos, and winds, are applicable to galaxies and galactic nuclei. This book is sure to become an invaluable professional reference and guide to current thinking in the field. It will be of particular interest to graduate students, for whom it shows how the area has developed and indicates the many challenging research problems, some of which may soon yield their secrets to the emerging supercomputers.
1 556 kr
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Most stars appear to show some degree of magnetic activity. For example, the varying magnetic field of the Sun shows up in the familiar sun-spot cycle. Radio and X-ray pulsars are enormously dense, rapidly rotating neutron stars which carry steady magnetic fields that are far stronger than the average magnetic field of the Sun. Likewise, many uncollapsed stars behave like rotating permanent magnets. Furthermore, magnetic fields may partly control the formation of new stars as well as the spectacular behaviour observed in galactic nuclei.Stellar magnetism is therefore a rapidly develoing field of astrophysics, and this book has grown out of the lifelong work of an outstanding researcher in the area. It is an authoritative account with broad astronomical scope, and its thorough, careful, and well-argued approach make it a fine addition to the professional literature. Most of the important topics are treated in mathematical depth with reference given to other relevant literature. Some of the studies, especially those on accretion discs, dynamos, and winds, are applicable to galaxies and galactic nuclei. As well as acting as a professional reference and guide to current thinking, this book will be of interest to graduate students, for whom it shows how the subject has developed and leads on to research problems in the field.
1 932 kr
Skickas inom 5-8 vardagar
Ongoing studies in mathematical depth, and inferences from `helioseismological' observations of the internal solar rotation have shown up the limitations in our knowledge of the solar interior and of our understanding of the solar dynamo, manifested in particular by the sunspot cycle, the Maunder minimum, and solar flares. This second edition retains the identical overall structure as the first edition, but is designed so as to be self-contained with the early chapters presenting the basic physics and mathematics underlying cosmical magnetohydrodynamics, followed by studies of the specific applications appropriate for a book devoted to a central area in astrophysics.