Some Recent Developments in Solar Dynamo Theory

Journal of astrophysics and astronomy

Arnab Rai Choudhuri1¹ 

[1]Department of Physics, Indian Institute of Science, Bangalore 560 012, India.$$

关键词: Sun: magnetic field;    sunspots;    solar cycle;    MHD.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown