Instabilities, mixing and solar neutrinos

Details Instabilities, mixing and solar neutrinos Instabilities, mixing and solar neutrinos

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985aipc..126...88r&link_type=abstract

IN: Solar neutrinos and neutrino astronomy; Proceedings of the Conference, Lead, SD, August 23-25, 1984 (A86-37626 17-93). New Y

Astronomy and Astrophysics

Astrophysics

2

Astrophysics, Solar Neutrinos, Stellar Rotation, Abundance, Helium Isotopes, Mixing, Stellar Composition

Scientific paper

Instabilities driven by differential rotation during spin down of a rotating solar model are analysed and it is shown that with a very small composition gradient, the first unstable mode is the axisymmetric baroclynic diffuse instability. It is argued that if this instability occurs, it leads to an almost horizontal re-adjustment of chemical composition and only very slight mixing. Mixing due to the 3He instability is energetically possible but it is argued that finite amplitude oscillations lead to a quasi-steady state without mixing with 3He being burnt to 4He during such oscillations.

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