Cosmic ray archaeology, solar activity and supernova explosions

Details Cosmic ray archaeology, solar activity and supernova explosions Cosmic ray archaeology, solar activity and supernova explosions

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.251..259k&link_type=abstract

In ESA Proceedings of the Joint Varenna-Abastumani International School and Workshop on Plasma Astrophysics p 259-270 (SEE N87-

Astronomy and Astrophysics

Astrophysics

3

Archaeology, Cosmic Rays, Solar Activity Effects, Supernovae, Beryllium 10, Carbon 14, Time Measurement

Scientific paper

The lecture is based on an analysis of the results of theoretical and experimental studies within a coordinated program, Astrophysical Phenomena and Radiocarbon, initiated twenty years ago. A discussion is given of the status and potential of studying the cosmic ray flux level over long time scales by high precision measurements of radiocarbon content in tree rings and of 10Be in polar ice cores. Particular emphasis is placed on the discovery of cosmic ray intensity modulation during the exceedingly low solar activity period (Maunder minimum), the established regularity in low solar activity states, and on evidence for a supernova explosion not far from the solar system 10 to 15 thousand years ago.

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