Temporal variations in solar rotation at the bottom of the convection zone: The current status

We present the most recent results on the short-period variations in the solar rotation rate near the base of the convection zone. The 1.3-year period which was reported in the early years of solar cycle 23 appears not to persist after 2001, but there are hints of fluctuations at a different period during the declining phase of the cycle. (C) 2007 COSPAR. Published by Elsevier Ltd. All rights reserved.