Multiradionuclide evidence for the solar origin of the cosmic-ray events of ᴀᴅ 774/5 and 993/4

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Mekhaldi, Florian; Muscheler, Raimund; Adolphi, Florian; Aldahan, Ala; Beer, Juerg; McConnell, Joseph R.; Possnert, Goran; Sigl, Michael; Svensson, Anders; Synal, Hans-Arno; Welten, Kees C.; Woodruff, Thomas E.;
(2015)

The origin of two large peaks in the atmospheric radiocarbon (C-14) concentration at AD 774/5 and 993/4 is still debated. There is consensus, however, that these features can only be explained by an increase in the atmospheric C-14 production rate due to an extraterrest... View more
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