Particle transport in solar type stars

Physics

Scientific paper

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Particle Motion, Solar Physics, Stellar Evolution, Beryllium, Helium Isotopes, Lithium, Solar Neutrinos, Stellar Composition, Stellar Cores, Turbulent Diffusion

Scientific paper

The present consideration of potential particle transport effects on solar evolution encompasses atomic diffusion, which can increase the neutrino flux. Turbulent diffusion could significantly reduce the neutrino flux, and is presently considered with a view to He-3, Li, and Be abundance effects. A model with turbulence parameter value of about 50 is noted to be capable of reducing the neutrino flux, while remaining compatible with the constraints imposed by abundances and the solar oscillation spectrum. This low turbulence value implies that the solar core is spinning at least three times faster than the surface.

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