Solar luminosity and the sunspot cycle

Details Solar luminosity and the sunspot cycle Solar luminosity and the sunspot cycle

Jul 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979natur.280...24d&link_type=abstract

Nature, vol. 280, July 5, 1979, p. 24-27. NSF-supported research.

Physics

24

Solar Flux, Solar Terrestrial Interactions, Stellar Luminosity, Sunspot Cycle, Climate, Graphs (Charts), Isotope Effect, Meteorology, Solar Activity, Solar Magnetic Field, Solar Wind

Scientific paper

Possible factors driving the sharply-tuned 22-year cycle in D/H isotope abundance ratios measured in cellulose from bristecone pines (Epstein and Yapp, 1976) are examined. It is concluded that this cycle is not due to external or surface activity of the sun (solar wind, flares, sunspot, etc.), as these phenomena exhibit a large phase fluctuation which is not present at a significant level in the D/H abundance ratio. It is shown that the Epstein-Yapp indicator and the sunspot numbers are consistent with a 22-year change in the luminosity of the sun, possibly induced by a deeply buried magnetic field.

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