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Published 1992 | public
Book Section - Chapter

Solar Activity

Abstract

The magnetic cycle lasts 22 years, reversing polarity in each 11-year half. Spots reach the surface in emerging flux regions (EFR) and grow in complexity. Ephemeral regions bring considerable flux to the surface, but play no great role. Diffusion models of the cycle are discussed, but the low observed diffusion constant makes them a poor fit to reality. We then turn to the properties of active regions, especially highly active regions producing many flares, and we discuss the properties of those flares.

Additional Information

© Springer Science+Business Media Dordrecht 1992.

Additional details

Created:
August 22, 2023
Modified:
January 15, 2024