Evolutionary variations of solar luminosity

Details Evolutionary variations of solar luminosity Evolutionary variations of solar luminosity

Jan 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982stin...8218112e&link_type=abstract

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Physics

Increasing, Luminance, Solar Radiation, Stellar Evolution, Stellar Luminosity, Sun, Variations, Climate, Differential Equations, Equations Of State, Greenhouse Effect, Helium, Hydrogen, Hydrostatics, Long Term Effects, Models, Nonlinear Equations, Nuclear Reactions, Paleoclimatology, Predictions, Radiative Transfer, Scaling Laws, Solar Terrestrial Interactions

Scientific paper

The Theoretical arguments for a 30% increase in the solar luminosity over the past 4.7 billion years are reviewed. A scaling argument shows that this increase can be predicted without detailed numerical calculations. The magnitude of the increase is independent of nuclear reaction rates, as long as conversion of hydrogen to helium provides the basic energy source of the Sun. The effect of the solar luminosity increase on the terrestrial climate is briefly considered. It appears unlikely that an enhanced greenhouse effect, due to reduced gases (NH3, CH4), can account for the long-term paleoclimatic trends.

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