Title: Helioseismic Measurement of Solar Internal Rotation
       and its Variations with Solar Activity

Sergei Vorontsov
Astronomy Unit
Queen Mary, University of London 


Abstract:
 
  Current mesurements of the solar acoustic oscillations provided
  by the space and ground-based projects (SOHO, GONG) bring 
  an unprecedented ammount of extremely accurate helioseismic data
  which allows to "see" in rather good detail the structure and
  rotation of the deep solar interior. This talk will consentrate
  on recent results of helioseismic inversions for variations of
  the internal rotation with solar activity cycle  (the so-called
  solar torsional oscillations), as a test of the theoretical
  predictions of the recent nonlinear solar dynamo modellings.