Helioseismology, solar models and neutrino fluxes

Abstract

We present our results concerning a systematical analysis of helioseismic implications on solar structure and neutrino production. We find Y${}_{ph}=0.238-0.259$, $R_b/R_{\odot }=0.708-0.714$ and $\ddot{I}{}_b=(0.185-0.199)$ gr/cm${}^3$. In the interval $0.2<R/R_{\odot }<0.65$, the quantity $U=P/\ddot{I}$ is determined with and accuracy of $\pm 5$\permille~or better. At the solar center still one has remarkable accuracy, $\hat{I}”U/U<4$. We compare the predictions of recent solar models (standard and non-standard) with the helioseismic results. By constructing helioseismically constrained solar models, the central solar temperature is found to be $T=1.58\times 10^7$K with a conservatively estimated accuracy of 1.4%, so that the major unceratainty on neutrino fluxes is due to nuclear cross section and not to solar inputs.

14 pages including 9 figures, LaTex file, espcrc2.sty is needed; to appear in Nucl. Phys. B Proc. Suppl., Proceedings of TAUP97 conference, Laboratori Nazionali del Gran Sasso, September 1997