The possibility of forming an inhomogeneous Sun and the solar neutrino effect

Details The possibility of forming an inhomogeneous Sun and the solar neutrino effect The possibility of forming an inhomogeneous Sun and the solar neutrino effect

Aug 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...431..881l&link_type=abstract

The Astrophysical Journal, vol. 431, no. 2, pt. 1, p. 881-887

Astronomy and Astrophysics

Astronomy

6

Abundance, Solar Interior, Solar Neutrinos, Star Formation, Stellar Composition, Stellar Evolution, Astronomical Models, Cosmology, Heavy Elements, Inhomogeneity, Solar Convection (Astronomy), Solar Temperature

Scientific paper

Recent observations confirm that the flux of neutrinos from the interior of the Sun is significantly less than what is expected on the basis of solar models. It has long been known that a low neutrino flux could result from a temperature in the Sun's core lower than the approximately 1.5 x 107 K central temperature given by standard solar models. A low central temperature could occur if the solar interior were depleted in the so-called metals -- atomic species heavier than helium -- resulting in lower internal opacity. In this case, chemical abundances measured in the solar convection zone would be unrepresentative of the deep-interior abundances. The possibility of a compositionally inhomogeneous Sun has usually been discarded on the basis of cosmogonical arguments against the formation of such nonhomogeneity. This paper suggests that compositional nonhomogeneity could have arisen through unremarkable physical processes during the formation of the Sun, and that a compositionally inhomogeneous Sun remains a viable possibility for investigation of the solar neutrino problem.

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