The potential of solar high-degree modes for structure inversion
Christensen-Dalsgaard, J.; Basu, Sarbani; Rabello-Soares, M. C.; Di Mauro, M. P.
Denmark, United States, Italy
Abstract
It is likely that precise and reliable frequencies of high-degree modes will soon be available from the SOI/MDI experiment. Here we examine the ability of such modes (with l>300) to resolve the solar structure in the near-surface region. In particular, we investigate inversions to determine the adiabatic exponent Γ1 as a test of the solar equation of state, as well as the potential of such data to constrain the solar envelope helium abundance.