Chakraborty, Sagar and Choudhuri, Arnab Rai and Chatterjee, Piyali (2009) Why Does the Sun's Torsional Oscillation Begin before the Sunspot Cycle? In: Physical Review Letters, 102 (4). 041102-1-4.
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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.
Item Type: | Journal Article |
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Publication: | Physical Review Letters |
Publisher: | American Physical Society |
Additional Information: | Copyright of this article belongs to American Physical Society. |
Department/Centre: | Division of Physical & Mathematical Sciences > Physics |
Date Deposited: | 24 Mar 2009 09:24 |
Last Modified: | 19 Sep 2010 05:27 |
URI: | http://eprints.iisc.ac.in/id/eprint/19169 |
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