Seismic imaging of the power spectrum of turbulent convection in the solar interior

by Dr Shravan Hanasoge (Seismic imaging of the power spectrum of turbulent convection in the solar interior)

Thursday 3 Jan 2013, 11:30 → 12:30 Asia/Kolkata

DAA A269 (Colaba Campus)

A variety of methods are brought to bear on the problem of appreciating turbulent convection in the solar interior. Seismic analyses of observations taken by the Helioseismic and Magnetic Imager onboard the Solar Dynamics Observatory reveal convective  velocities that are almost two orders in magnitude smaller than current theoretical and computational predictions. The associated Reynolds' stresses would be too small to explain meridional circulation and differential rotation in the convection envelope and throw into question models of dynamo action in the Sun.