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Global Evolution of Photospheric Magnetic Fields

Published online by Cambridge University Press:  08 February 2017

V. I. Makarov  and
K. R. Sivaraman
V. I. Makarov
Affiliation:
Kislovodsk Station of the Pulkovo Observatory, Kislovodsk, 357741, USSR
K. R. Sivaraman
Affiliation:
Indian Institute of Astrophysics, Bangalore 560034, INDIA

Abstract

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The main features concerning the evolution of the large scale photospheric magnetic fields derived from synoptic maps as well as from H-alpha synoptic charts are reviewed. The significance of a variety of observations that indicate the presence of a high latitude component as a counterpart to the sunspot phenomenon at lower latitudes is reviewed. It is argued that these two components describe the global magnetic field on the sun. It is demonstrated that this scenario is able to link many phenomena observed on the sun (coronal emission, ephemeral active regions, geomagnetic activity, torsional oscillations, polar faculae and global modes in the magnetic field pattern) with the global magnetic activity.

Type
V. Large-scale Structure and Dynamics
Information
Symposium - International Astronomical Union , Volume 138: Solar Photosphere: Structure, Convection and Magnetic Fields , 1990 , pp. 281 - 295
Copyright
Copyright © Kluwer 1990 

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