Variation of high-degree mode frequencies during the declining phase of solar cycle 23
Hill, F.; Jain, K.; Tripathy, S. C.
United States
Abstract
We investigate the spatial and temporal variation of the high-degree mode frequencies during the declining phase of the solar cycle 23 and the extended minimum between the cycle 23 and 24. We find that the frequency shifts of high-degree modes obtained through the ring-diagram analysis in different phases of the solar cycle are not equally correlated with the local magnetic activity index.