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Helioseismology and solar neutrinos

The studies of solar neutrinos and helioseismology have been closely intertwined since the first neutrino experiment and the first observations of solar oscillations in the sixties. Early detailed helioseismic analyses provided strong support for the standard solar model and hence a clear indication that the solution to the discrepancy between the predicted and observed neutrino fluxes had to be found in terms of neutrino physics, as now fully confirmed by direct observations. With the full characterization of neutrino properties we are now in a position to combine neutrino observations and helioseismology to obtain a more complete understanding of conditions in the solar core. Here I provide a personal and largely historical overview of these developments.