2 papers
astro-ph2001
Solar-cycle variation of the sound-speed asphericity from GONG and MDI data 1995-2000
H. M. Antia, S. Basu, F. Hill +3
We study the variation of the frequency splitting coefficients describing the solar asphericity in both GONG and MDI data, and use these data to investigate temporal sound-speed va…
astro-ph2000
Deeply penetrating banded zonal flows in the solar convection zone
R. Howe, J. Christensen-Dalsgaard, F. Hill +5
Helioseismic observations have detected small temporal variations of the rotation rate below the solar surface corresponding to the so-called `torsional oscillations' known from Do…