Indications of R-mode Oscillations in SOHO/MDI Solar Radius Measurements
Scargle, J. D.; Gough, D. O.; Sturrock, P. A.; Bush, R.
United States, United Kingdom
Abstract
Analysis of solar radius measurements acquired by the Michelson Doppler Imager on the Solar and Heliospheric Observatory spacecraft supports previously reported evidence of solar internal r-mode oscillations in Mt Wilson radius data and in 90Sr beta-decay data. The frequencies of these oscillations are compatible with oscillations in a putative inner tachocline that separates a slowly rotating core from the radiative envelope.