Back to Volume
Paper: Solar Cycle Variation of High-Degree Acoustic Mode Frequencies
Volume: 478, Fifty Years of Seismology of the Sun and Stars
Page: 221
Authors: Tripathy, S. C.; Jain, K.; Komm, R. W.; Hill, F.
Abstract: We investigate the temporal variations of the high-degree mode frequencies measured over localized regions of the Sun though the technique of ring-diagrams. We observe that the high-degree mode frequencies have a solar cycle variation similar to those of intermediate-degree modes but ten times greater. We also find that the averaged frequency shifts are linearly correlated with routinely measured solar activity indices e.g. 10.7 cm radio flux. We do not, however, find any evidence of a quadratic relation between the frequencies of individual multiplets and solar activity indices as reported earlier from the study of global high-degree modes.
Back to Volume