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SAC Seminar - Benjamin Pope: Extreme Solar Events in the Radiocarbon Record

24.04.2017 | Louise Børsen-Koch

Dato man 24 apr
Tid 14:15 15:00
Sted 1520-626

The science of dendrochronology allows us to assign precise years to individual tree rings, making such samples ideal calibration sources for radiocarbon dating. Recently, single-year radiocarbon measurements have allowed Miyake et al. (2012) to identify a 12% increase in radiocarbon in 774-775 AD, and another such event in 993-994 AD (Miyake et al., 2013). In this talk, presenting work in collaboration with Mike Dee (Oxford/Groningen), I will show that we do not observe such signals in years corresponding to known historical supernovae, briefly review evidence that these Miyake events may have a solar origin, demonstrate how Bayesian models can help us discover more of them, and discuss how they can be used both for archaeological dating and solar and stellar physics.