EAS Publications Series
Volume 9, 2003Magnetism and Activity of the Sun and Stars
|Page(s)||339 - 339|
|Published online||17 November 2003|
J. Arnaud and N. Meunier (eds)
EAS Publications Series, 9 (2003) 339
The Sun in Time: From PMS to Main Sequence
Paul Scherrer Institut, Wuerenlingen and Villigen, 5232 Villigen PSI, Switzerland
The Sun's magnetic activity has changed considerably during its evolution from a protostar to a low-activity main-sequence star. The young Sun produced orders of magnitude more hot plasma, X-ray emission, and high-energy particles. The present paper summarizes a few recent investigations on the nature of the magnetic activity and associated high-energy processes in the Sun at different stages of its evolution, with emphasis on the physical mechanisms that may be responsible for coronal heating, the large-scale structure of the magnetic fields, and the possible mass-loss history of the Sun.
© EAS, EDP Sciences, 2003
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