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Can the ¹⁴C production in 1054 CE be affected by SN1054? |
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| Author: | Terrasi, F1,2; Marzaioli, F1,2; Buompane, R1,2; |
| Organizations: |
1CIRCE, Department of Mathematics and Physics, Campania University“L. Vanvitelli”, Caserta, andINFN Napoli, Italy 2INNOVA SCaRL, Pozzuoli (NA), Italy 3CEREGE, Aix-Marseille University, CNRS, IRD, INRA, Collège de France, Technopôle de l’Arbois,Aix-en-Provence, France
4Natural Resources Institute Finland, Rovaniemi, Finland
5Finnish Museum of Natural History–LUOMUS, University of Helsinki, Helsinki, Finland 6Natural Resources Institute Finland, Espoo, Finland 7Department of Physics, University of Helsinki, Helsinki, Finland 8Department of Geosciences, University of Arizona, Tucson, AZ 85721, USA 9University of Arizona AMS Laboratory, Tucson, AZ 85721, USA 10Hertelendi Laboratory of Environmental Studies, Isotope Climatology and Environmental Research Centre (ICER),Institute for Nuclear Research, Debrecen 4026, Hungary 11Laboratory of Tree-Ring Research, University of Arizona, Tucson, AZ 85721, USA 12A.F. Ioffe Physical-Technical Institute, St. Petersburg, Russia 13Space Climate Research Unit and Sodankylä Geophysical Observatory, University of Oulu, Oulu, Finland |
| Format: | article |
| Version: | accepted version |
| Access: | open |
| Online Access: | PDF Full Text (PDF, 0.7 MB) |
| Persistent link: | http://urn.fi/urn:nbn:fi-fe2020120799739 |
| Language: | English |
| Published: |
Cambridge University Press,
2020
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| Publish Date: | 2021-02-18 |
| Description: |
AbstractAnnually 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. see all
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| Series: |
Radiocarbon |
| ISSN: | 0033-8222 |
| ISSN-E: | 1945-5755 |
| ISSN-L: | 0033-8222 |
| Volume: | 62 |
| Issue: | 5 |
| Pages: | 1403 - 1418 |
| DOI: | 10.1017/RDC.2020.58 |
| OADOI: | https://oadoi.org/10.1017/RDC.2020.58 |
| Type of Publication: |
A1 Journal article – refereed |
| Field of Science: |
117 Geography and environmental sciences |
| Subjects: | |
| Funding: |
The work of S. Helama, M. Oinonen, P. Nöjd and J. Uusitalo was supported by the Academy of Finland (grants 288083 and 288267). Work by G. Kovaltsov, S. Poluianov and I. Usoskin was partially supported by the Academy of Finland (Project ESPERA 321882). A.J.T. Jull, M. Molnar and T. Varga acknowledge partial support by the European Union and the State of Hungary, co-financed by the European Regional Development Fund in the project GINOP-2.3.2.-15-2016-00009 “ICER”. |
| Academy of Finland Grant Number: |
321882 |
| Detailed Information: |
321882 (Academy of Finland Funding decision) |
| Copyright information: |
© 2020 by the Arizona Board of Regents on behalf of the University of Arizona. The final authenticated version is available online at https://doi.org/10.1017/RDC.2020.58. |