Does the Sun Shrink with Increasing Magnetic Activity?

Abstract

It has been demonstrated that frequencies of f-modes can be used to estimate the solar radius to a good accuracy. These frequencies have been used to study temporal variations in the solar radius with conflicting results. The variation in f-mode frequencies is more complicated than what is assumed in these studies. If a careful analysis is performed, then it turns out that there is no evidence for any variation in the solar radius.