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The Sun’s polar magnetic field: datasets, proxies and theoretical issues

Published online by Cambridge University Press:  27 November 2018

Arnab Rai Choudhuri
Arnab Rai Choudhuri*
Affiliation:
Department of Physics, Indian Institute of Science, Bangalore – 560012, India email: arnab@iisc.ac.in
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Abstract

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The polar magnetic field of the Sun is a manifestation of certain aspects of the dynamo process and is a good precursor for predicting a sunspot cycle before its onset. Although actual synoptic measurements of this field exist only from the mid-1970s, it has now been possible to determine its evolution from the beginning of the twentieth century with the help of various proxies. The recently developed 3D kinematic dynamo model can study the build-up of the Sun’s polar magnetic field more realistically than the earlier surface flux transport model.

Keywords

Sun: activitySun: magnetic fieldsMHD
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S340: Long-term Datasets for the Understanding of Solar and Stellar Magnetic Cycles , February 2018 , pp. 289 - 292
Copyright
Copyright © International Astronomical Union 2018 

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