For the Sun, a tight correlation between various activity measures and
oscillation frequencies is well documented. For other stars, we have abundant
data on magnetic activity and its changes but not yet on its seismic signature.
A prediction of the activity induced frequency changes in stars based on
scaling the solar relations is presented. This seismic signature of the
activity should be measurable in the data expected within few years.Comment: 8 pages, 3 figures, to appear in proceedings of "Unsolved Problems in
Stellar Physics" conference (Cambridge, UK, July 2007
