An 8000-year sequence of galactic cosmic-ray fluctuations

Details An 8000-year sequence of galactic cosmic-ray fluctuations An 8000-year sequence of galactic cosmic-ray fluctuations

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pazh....9..206k&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 9, Apr. 1983, p. 206-210) Soviet Astronomy Letters (ISSN 0360-0327), vol. 9, Mar.-Apr.

Astronomy and Astrophysics

Astronomy

3

Dendrochronology, Galactic Cosmic Rays, Radiant Flux Density, Radioactive Age Determination, Abundance, Carbon 14, Long Term Effects, Solar Activity Effects

Scientific paper

Radiocarbon evidence for the fluctuations in the galactic cosmic ray intensity at the earth's orbit is examined. The five-reservoir model is applied to determine the balance and redistribution of cosmogenic C-14 in nature. The curve for the modulation coefficient as a function of the variations in the radiocarbon formation rate is shown, as is the intensity variation of the galactic cosmic rays within the rigidity range 0.5-50 GV over the past 8000 years or so. The results suggest that prolonged solar activity minima, like the Maunder minimum, have been a common occurrence over the past 8000 yr.

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