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Model of poleward magnetic field streams from sunspot butterflies

Published online by Cambridge University Press:  18 July 2013

Nadezhda V. Zolotova  and
Dmitri I. Ponyavin
Nadezhda V. Zolotova
Affiliation:
Institute of Physics, St. Petersburg State University, Ulyanovskaya ul.1, Petrodvorets, St. Petersburg, Russia, 198504 email: [email protected]
Dmitri I. Ponyavin
Affiliation:
Institute of Physics, St. Petersburg State University, Ulyanovskaya ul.1, Petrodvorets, St. Petersburg, Russia, 198504 email: [email protected]
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Abstract

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The poleward magnetic field streams on time-latitude diagram of the photospheric magnetic field of the Sun during 1975–2011 (Kitt Peak NSO, SOLIS NSO, SOHO MDI data) are modeled. We performed simulations in terms of probability density function and bipole orientation according to Joy's law and Hale's cycle. The difference between distributions of leading and trailing fluxes of bipolar sunspots defines the so-called surplus. Finally, magnetic field streams and polar field reversals are a result of meridional drift of a surplus to the poles.

Keywords

Sun: activitySun: magnetic fields(Sun:) sunspots
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S294: Solar and Astrophysical Dynamos and Magnetic Activity , August 2012 , pp. 87 - 92
Copyright
Copyright © International Astronomical Union 2013 

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