Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pazh....9..734v&link_type=abstract
(Pis'ma v Astronomicheskii Zhurnal, vol. 9, Nov.-Dec. 1983, p. 734-740) Soviet Astronomy Letters (ISSN 0360-0327), vol. 9, Nov.-
Astronomy and Astrophysics
Astronomy
2
Stellar Cores, Stellar Oscillations, Stellar Structure, Vibration Mode, Abundance, Adiabatic Equations, Equilibrium Equations, Solar Oscillations, Stellar Models
Scientific paper
The possibility that superadiabaticity in the solar core can excite large-scale g-mode instability was examined analytically. The star model used comprised a neutral core, an intermediate radiative zone and a convective envelope. A numerical analysis was performed of hydrogen burning through the pp reaction. It is shown that the low-mass model star can have a pulsationally stable g-mode characterized by large (spherical harmonics) l-values, provided the core has a sufficiently large superadiabaticity gradient. The resulting oscillation will increase in proportion to l. Rapid time fluctuations in the solar neutrino flux indicate that the sun does have a core in adiabatic equilibrium.
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