  Althogh KamLAND apparently rules out Resonant-Spin-Flavor-Precession (RSFP)
as an explanation of the solar neutrino deficit, the solar neutrino fluxes in
the Cl and Ga experiments appear to vary with solar rotation. Added to this
evidence, summarized here, a power spectrum analysis of the Super-Kamiokande
data reveals significant variation in the flux matching a dominant rotation
rate observed in the solar magnetic field in the same time period. Three
frequency peaks, all related to this rotation rate, can be explained
quantitatively. A Super-Kamiokande paper reported no time variation of the
flux, but showed the same peaks, there interpreted as statistically
insignificant, due to an inappropriate analysis. This modulation is small (7%)
in the Super-Kamiokande energy region (and below the sensitivity of the
Super-Kamiokande analysis) and is consistent with RSFP as a subdominant
neutrino process in the convection zone. The data display effects that
correspond to solar-cycle changes in the magnetic field, typical of the
convection zone. This subdominant process requires new physics: a large
neutrino transition magnetic moment and a light sterile neutrino, since an
effect of this amplitude occurring in the convection zone cannot be achieved
with the three known neutrinos. It does, however, resolve current problems in
providing fits to all experimental estimates of the mean neutrino flux, and is
compatible with the extensive evidence for solar neutrino flux variability.
