Books > Science & Mathematics > Astronomy, space & time > Solar system
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The Rotation of Sun and Stars (Hardcover, 2009 ed.)
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The Rotation of Sun and Stars (Hardcover, 2009 ed.)
Series: Lecture Notes in Physics, 765
Expected to ship within 10 - 15 working days
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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.
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