CAN THE 14C PRODUCTION IN 1055 CE BE AFFECTED BY SN1054?
| Autor: | Fabio Marzaioli, Markku Oinonen, Irina P. Panyushkina, G. Porzio, Filippo Terrasi, Isabella Passariello, Chris Baisan, A. J. T. Jull, Manuela Capano, Ilya Usoskin, G. A. Kovaltsov, Tamás Varga, Pekka Nöjd, Raffaele Buompane, Stepan Poluianov, Mihály Molnár, J Uusitalo, Samuli Helama |
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| Přispěvatelé: | Terrasi, F, Marzaioli, F, Buompane, R, Passariello, I, Porzio, G, Capano, M, Helama, S, Oinonen, M, Nöjd, P, Uusitalo, J, T Jull, A J, P Panyushkina, I, Baisan, C, Molnar, M, Varga, T, Kovaltsov, G, Poluianov, S, Usoskin, I, University of the Study of Campania Luigi Vanvitelli, INNOVA SCaRL, Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Natural Resources Institute Finland (LUKE), Finnish Museum of Natural History (LUOMUS), Helsingin yliopisto = Helsingfors universitet = University of Helsinki, University of Arizona, Institute for Nuclear Research [Budapest] (ATOMKI), Hungarian Academy of Sciences (MTA), Laboratory of Tree-Ring Research, A.F. Ioffe Physical-Technical Institute, Russian Academy of Sciences [Moscow] (RAS), University of Oulu, University of Helsinki |
| Rok vydání: | 2020 |
| Předmět: |
Solar minimum
010506 paleontology Archeology biology Solar flare Sequoia [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Magnitude (mathematics) Atmospheric sciences biology.organism_classification 01 natural sciences law.invention Supernova 13. Climate action law 0103 physical sciences General Earth and Planetary Sciences Environmental science Radiocarbon dating 010303 astronomy & astrophysics Event (particle physics) ComputingMilieux_MISCELLANEOUS 0105 earth and related environmental sciences |
| Zdroj: | Radiocarbon Radiocarbon, 2020, 62 (5), pp.1403-1418. ⟨10.1017/RDC.2020.58⟩ Radiocarbon, University of Arizona, 2020, 62 (5), pp.1403-1418. ⟨10.1017/RDC.2020.58⟩ |
| ISSN: | 1945-5755 0033-8222 |
| DOI: | 10.1017/rdc.2020.58 |
| Popis: | Annually resolved radiocarbon (14C) measurements on tree rings led to the discovery of abrupt variations in 14C production attributed to large solar flares. We present new results of annual and subannual 14C fluctuations in tree rings from a middle-latitude sequoia (California) and a high-latitude pine (Finland), analyzed for the period 1030–1080 CE, to trace a possible impact of the Crab supernova explosion, occurring during the Oort minimum of solar activity. Our results indicate an increase of Δ14C around 1054/55 CE, which we estimate is higher in magnitude than the cyclic variability due to solar activity at a 2σ significance level. The net signal appears to be synchronized in the studied locations. Several sources of this event are possible including γ-rays from the Crab supernova, an unusually weak solar minimum or a solar energetic particle incident. More data are needed to provide more insight into the origin of this 14C event. |
| Databáze: | OpenAIRE |
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