Why Does the Sun’s Torsional Oscillation Begin before the Sunspot Cycle?

Sagar Chakraborty, Arnab Rai Choudhuri, and Piyali Chatterjee
Phys. Rev. Lett. 102, 041102 – Published 29 January 2009; Erratum Phys. Rev. Lett. 103, 099902 (2009)

Abstract

Although the Sun’s torsional oscillation is believed to be driven by the Lorentz force associated with the sunspot cycle, this oscillation begins 2–3 yr before the sunspot cycle. We provide a theoretical explanation of this with the help of a solar dynamo model having a meridional circulation penetrating slightly below the bottom of the convection zone, because only in such dynamo models does the strong toroidal field form a few years before the sunspot cycle and at a higher latitude.

  • Figure
  • Figure
  • Figure
  • Received 27 May 2008

DOI:https://doi.org/10.1103/PhysRevLett.102.041102

©2009 American Physical Society

Erratum

Erratum: Why Does the Sun’s Torsional Oscillation Begin before the Sunspot Cycle? [Phys. Rev. Lett. 102, 041102 (2009)]

Sagar Chakraborty, Arnab Rai Choudhuri, and Piyali Chatterjee
Phys. Rev. Lett. 103, 099902 (2009)

Authors & Affiliations

Sagar Chakraborty1, Arnab Rai Choudhuri2, and Piyali Chatterjee2,*

  • 1Department of Theoretical Sciences, S. N. Bose Centre for Basic Sciences, Kolkata-700098, India
  • 2Department of Physics, Indian Institute of Science, Bangalore-560012, India

  • *Present address: Department of Astronomy and Astrophysics, TIFR, Mumbai, India.

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 102, Iss. 4 — 30 January 2009

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×