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Modelling stellar activity cycles using deep-seated dynamos and surface flux transport

Published online by Cambridge University Press:  18 July 2013

Emre Işık ,
Dieter Schmitt  and
Manfred Schüssler
Emre Işık
Affiliation:
Department of Physics, Istanbul Kültür University, Bakırköy, 34156, Istanbul, Turkey email: [email protected]
Dieter Schmitt
Affiliation:
Max-Planck-Institut für Sonnensystemforschung, Max-Planck-Str. 2, 37191 Katlenburg-Lindau, Germany
Manfred Schüssler
Affiliation:
Max-Planck-Institut für Sonnensystemforschung, Max-Planck-Str. 2, 37191 Katlenburg-Lindau, Germany
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Abstract

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We investigate the relations between tachocline-based dynamos and the surface flux transport mechanisms in stars with outer convection zones. Using our combined models of flux generation and transport, we demonstrate the importance of the buoyant rise of magnetic flux, which physically determines the emergence latitudes and tilt angles of bipolar magnetic regions. The combined effects of the dynamo strength, flux rise, and surface transport lead to various cyclic and non-cyclic time series of total unsigned surface magnetic flux.

Keywords

Sun: interiorstars: late-typestars: magnetic fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S294: Solar and Astrophysical Dynamos and Magnetic Activity , August 2012 , pp. 431 - 432
Copyright
Copyright © International Astronomical Union 2013 

References

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Işık, E. 2012, in: Mandrini, C.H. & Webb, D. F. (eds.), Comparative Magnetic Minima: Characterizing Quiet Times in the Sun and Stars, Proc. IAU Symposium No. 286 (Cambridge University Press), p. 291 Google Scholar
Oláh, K., Kolláth, Z., Granzer, T., et al. 2009, A&A, 501, 703 Google Scholar
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