A rapid cosmic-ray increase in BC 3372-3371 from ancient buried tree rings in China.
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ABSTRACT:
SUBMITTER: Wang FY
PROVIDER: S-EPMC5684315 | biostudies-literature | 2017 Nov
REPOSITORIES: biostudies-literature
Publications
A rapid cosmic-ray increase in BC 3372-3371 from ancient buried tree rings in China.
Wang F Y FY Yu H H Zou Y C YC Dai Z G ZG Cheng K S KS
Nature communications 20171114 1
Cosmic rays interact with the Earth's atmosphere to produce <sup>14</sup>C, which can be absorbed by trees. Therefore, rapid increases of <sup>14</sup>C in tree rings can be used to probe previous cosmic-ray events. By this method, three <sup>14</sup>C rapidly increasing events have been found. Plausible causes of these events include large solar proton events, supernovae, or short gamma-ray bursts. However, due to the lack of measurements of <sup>14</sup>C by year, the occurrence frequency of s ...[more]
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