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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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|
|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|
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