Surprising Sun: A New Step Towards a Complete Picture?

Abstract

Important revisions of the solar model ingredients have appeared recently. We first show that the updated CNO composition suppresses the anomalous position of the Sun in the known galactic enrichment. The following law, $\mathrm{H}\mathrm{e}/\mathrm{H}=0.075+44.6\mathrm{O}/\mathrm{H}$ in number fraction, is now compatible with all the indicators. We then suggest some directions of investigation to solve the discrepancies between the standard model and solar seismic observations. We finally update our predicted neutrino fluxes using a seismic model and all the recent progress. We get $5.31\pm 0.6\times {10}^6/\mathrm{c}{\mathrm{m}}^2/\mathrm{s}$ for the total ${}^8\mathrm{B}$ neutrinos, $66.5\pm 4.4$ SNU and $2.76\pm 0.4$ SNU for the gallium and chlorine detectors, all in remarkable agreement with the detected values including neutrino oscillations for the last two. So, the acoustic modes and detected neutrinos see the same Sun, but the standard model fails to reproduce them.