Some recent developments in solar dynamo theory |
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| Authors: | Arnab Rai Choudhuri |
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| Institution: | (1) Department of Physics, Indian Institute of Science, 560 012 Bangalore, India |
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| Abstract: | We discuss the current status of solar dynamo theory and describe the dynamo model developed by our group. The toroidal magnetic
field is generated in the tachocline by the strong differential rotation and rises to the solar surface due to magnetic buoyancy
to create active regions. The decay of these active regions at the surface gives rise to the poloidal magnetic field by the
Babcock-Leighton mechanism. This poloidal field is advected by the meridional circulation first to high latitudes and then
down below to the tachocline. Dynamo models based on these ideas match different aspects of observational data reasonably
well. |
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| Keywords: | Sun: magnetic field sunspots solar cycle MHD |
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