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Flows, Evolution of Magnetic Fields, and Flares

Published online by Cambridge University Press:  12 April 2016

Haimin Wang
Haimin Wang*
Affiliation:
Big Bear Solar Observatory California Institute of Technology Pasadena, CA 91125, USA

Abstract

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This paper reviews observations on the evolution of magnetic fields and flows in active regions which produce major flares. It includes the following topics: (1) Relationship between magnetic shear and flares; (2) Relationship between electric currents and flares; (3) Flows in active regions, particularly the emergence of new flux inside sheared penumbrae, and the mixed magnetic polarity nature of this kind of flux emergence; and (4) Changes of magnetic structure immediately before and after major solar flares; in particular, I will describe some recent findings that shear may increase after major flares.

Type
Session 6. Flares and Transients
Information
International Astronomical Union Colloquium , Volume 141: The Magnetic and Velocity Fields of Solar Active Regions , 1993 , pp. 323 - 332
Copyright
Copyright © Astronomical Society of the Pacific 1993

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