Double ring algorithm of solar active region eruptions within the framework of kinematic dynamo model

Soumitra Hazra1*& Dibyendu Nandy1†
1Department of Physical Sciences, Indian Institute of Science Education and Research, Kolkata 741 252, India

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Recent results indicate that the Babcock-Leighton mechanism for poloidal field creation plays an important role in the solar cycle. However, modelling this mechanism has not always correctly captured the underlying physics. In particular, it has been demonstrated that using a spatially distributed near-surface alpha-effect to parametrize the Babcock- Leighton mechanism generates results which do not agree with observations. Motivated by this, we are developing a physically more consistent model of the solar cycle in which we model poloidal field creation by the emergence and flux dispersal of double-ring structures. Here, we present preliminary results from this new dynamo model.

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Keywords : Sun : magnetic fields, dynamo