Astronomy and Astrophysics – Astronomy
Scientific paper
May 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spd....34.1906n&link_type=abstract
American Astronomical Society, SPD meeting #34, #19.06; Bulletin of the American Astronomical Society, Vol. 35, p.843
Astronomy and Astrophysics
Astronomy
Scientific paper
Visible manifestations of the 22 year solar magnetic cycle have been the subject of study spanning centuries starting with the telescopic observations of sunspots by Johann Fabricius, Christoph Scheiner and Galileo Galilei in the early 1600s. Coupled with these observations of magnetic features on the solar surface, the advent of the field of helioseismology in recent years has made it possible to map large scale flows in the solar interior - believed to play a crucial role in sustaining the solar cycle. However, a complete understanding of the hydromagnetic dynamo mechanism that powers this solar cycle remains elusive. Here we report studies of the solar dynamo addressing some of the important unresolved questions regarding the nature and location of the alpha effect, solar magnetic parity selection and the role of large scale flows and their variation, with a goal to understand the exact means by which the Sun generates its magnetic cycle. This study was supported by NASA through SR&T grant NAG5-6110.
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