  Recent coordinated power-spectrum analyses of radiochemical solar neutrino
data and the solar irradiance have revealed a highly significant, high-Q common
modulation at 11.85 yr-1. Since the stability of this frequency points to an
explanation in terms of rotation, this result may be attributable to
non-spherically-symmetric nuclear burning in a solar core with sidereal
rotation frequency 12.85 yr-1. The variability of the amplitude (on a timescale
of years) suggests that the relevant nuclear burning is variable as well as
asymmetric. Recent analysis of Super-Kamiokande solar neutrino data has
revealed r-mode-type modulations with frequencies corresponding to a region
with sidereal rotation frequency 13.97 yr-1. If this modulation is attributed
to the RSFP (Resonant Spin Flavor Precession) process, it provides a
measurement of the rotation rate deep in the radiative zone. These two results
suggest that the core rotates significantly more slowly than the radiative
zone. If one accepts an upper limit of 7 MG for the Sun's internal magnetic
field, an RSFP interpretation of the Super-Kamiokande results leads to a lower
limit of 10-12 Bohr magnetons for the neutrino transition magnetic moment.
