Modeling solar variability

Details Modeling solar variability Modeling solar variability

Feb 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...253..399g&link_type=abstract

Astrophysical Journal, Part 1, vol. 253, Feb. 1, 1982, p. 399-405.

Astronomy and Astrophysics

Astrophysics

39

Solar Activity Effects, Solar Atmosphere, Solar Temperature, Stellar Luminosity, Stellar Models, Variability, Convective Flow, Hydrodynamics, Mixing Length Flow Theory, Stellar Envelopes, Stellar Evolution, Stellar Magnetic Fields, Stellar Structure, Temperature Gradients, Time Dependence

Scientific paper

Results of detailed numerical models yielding the amplitudes of the atmospheric variations of solar radius, luminosity, and temperature that arise from rapid perturbations to properties of the convective envelope are presented. The numerical models predict significantly different surface responses for perturbations of the temperature gradient at the convective envelope base, variations of convective efficiency, and the effects of magnetic flux tubes, than was previously found based on simple hydromagnetic arguments. A detailed critique of previous and current efforts for modeling solar variability based on mixing length theories of convection and simple physical arguments is given, and alternative modeling efforts are suggested.

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