The Sun's Interior Metallicity Constrained by Neutrinos

Details The Sun's Interior Metallicity Constrained by Neutrinos The Sun's Interior Metallicity Constrained by Neutrinos

2006-05-25

arxiv.org/abs/astro-ph/0605647v1

Mon.Not.Roy.Astron.Soc.370:L90-L93,2006

Astronomy and Astrophysics

Astrophysics

accepted by MNRAS, 2 figures

Scientific paper

10.1111/j.1745-3933.2006.00197.x

Observed solar neutrino fluxes are employed to constrain the interior composition of the Sun. Including the effects of neutrino flavor mixing, the results from Homestake, Sudbury, and Gallium experiments constrain the Mg, Si, and Fe abundances in the solar interior to be within a factor 0.89 to 1.34 of the surface values with 68% confidence. If the O and/or Ne abundances are increased in the interior to resolve helioseismic discrepancies with recent standard solar models, then the nominal interior Mg, Si, and Fe abundances are constrained to a range of 0.83 to 1.24 relative to the surface. Additional research is needed to determine whether the Sun's interior is metal poor relative to its surface.

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