Sun, Space Weather, and Solar-Stellar Connection

Identification of the regime of the Solar Dynamo Operation

Not scheduled

3m

Poster

Speaker

DIPANWITA MISRA

Description

The theoretical model, excluding meridional flow, magnetic buoyancy, and including the
entire α effect from the base of the convection zone to the surface, indicates that multicycle
correlations occur near the critical dynamo region, while one-cycle correlations are
prevalent in the extremely super-critical dynamo region. These findings align with Kumar
et al. (2021), who suggest that solar-cycle memory is influenced by the dynamo
regime rather than solely by transport mechanisms, a view that contradicts Yeates et al.
(2008). In marginally supercritical regions, minimal non-linearity leads to multi-cycle
correlation, whereas in extremely supercritical regimes, heightened non-linearity and randomness
reduce the correlation. Observational data analysis corroborates these results,
showing multi-cycle correlation in both diffusion and advection-dominated data, which
diminishes with fewer data points.