Hostname: page-component-cd9895bd7-gvvz8 Total loading time: 0 Render date: 2025-01-04T11:37:00.590Z Has data issue: false hasContentIssue false
  • English
  • Français

Is meridional circulation important in modelling irregularities of the solar cycle?

Published online by Cambridge University Press:  05 July 2012

Bidya Binay Karak  and
Arnab Rai Choudhuri
Bidya Binay Karak
Affiliation:
Department of Physics, Indian Institute of Science, Bangalore 560012, India email: [email protected]
Arnab Rai Choudhuri
Affiliation:
Department of Physics, Indian Institute of Science, Bangalore 560012, India email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We explore the importance of meridional circulation variations in modelling the irregularities of the solar cycle by using the flux transport dynamo model. We show that a fluctuating meridional circulation can reproduce some features of the solar cycle like the Waldmeier effect and the grand minimum. However, we get all these results only if the value of the turbulent diffusivity in the convection zone is reasonably high.

Keywords

Sun: dynamo — Sun: activity — sunspots
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S286: Comparative Magnetic Minima: Characterizing quiet times in the Sun and Stars , October 2011 , pp. 367 - 371
Copyright
Copyright © International Astronomical Union 2012

References

Chatterjee, P. & Choudhuri, A. R. 2006, Solar Phys., 239, 29CrossRefGoogle Scholar
Chatterjee, P., Nandy, D., & Choudhuri, A. R. 2004, A&A, 427, 1019Google Scholar
Choudhuri, A. R. 2011, Pramana, 77, 77CrossRefGoogle Scholar
Choudhuri, A. R., Chatterjee, P., & Jiang, J. 2007, Phys. Rev. Lett., 98, 1103CrossRefGoogle Scholar
Choudhuri, A. R. & Karak, B. B. 2009, RAA, 9, 953Google Scholar
Choudhuri, A. R., Schüssler, M., & Dikpati, M. 1995, A&A, 303, L29Google Scholar
Dikpati, M. & Charbonneau, P. 1999, ApJ, 518, 508CrossRefGoogle Scholar
Goel, A. & Choudhuri, A. R. 2009, RAA, 9, 115Google Scholar
Hotta, H. & Yokoyama, T. 2010, ApJ, 714, L308CrossRefGoogle Scholar
Jiang, J., Chatterjee, P., & Choudhuri, A. R. 2007, MNRAS, 381, 1527CrossRefGoogle Scholar
Karak, B. B. 2010, ApJ, 724, 1021CrossRefGoogle Scholar
Karak, B. B. & Choudhuri, A. R. 2011, MNRAS, 410, 1503Google Scholar
Karak, B. B. & Choudhuri, A. R. 2012, Solar Phys., 278, 137CrossRefGoogle Scholar
Passos, D. 2012, ApJ, 744, 172CrossRefGoogle Scholar
Pipin, V. V. & Kosovichev, A. G. 2011, ApJ, 741, 1CrossRefGoogle Scholar
Sokoloff, D. & Nesme-Ribes, E. 1994, A&A, 288, 293Google Scholar
Usoskin, I. G., Mursula, K., & Kovaltsov, G. A. 2000, A&A, 354, L33Google Scholar
Yeates, A. R., Nandy, D., & Mackay, D. H. 2008, ApJ, 673, 544CrossRefGoogle Scholar