Nicolas Brehm, Marcus Christl, Timothy D. J. Knowles, Emmanuelle Casanova, Richard P. Evershed, Florian Adolphi, Raimund Muscheler, Hans-Arno Synal, Florian Mekhaldi, Chiara I. Paleari, Hanns-Hubert Leuschner, Alex Bayliss, Kurt Nicolussi, Thomas Pichler, Christian Schlüchter, Charlotte L. Pearson, Matthew W. Salzer, Patrick Fonti, Daniel Nievergelt, Rashit Hantemirov, David M. Brown, Ilya Usoskin & Lukas Wacker. Tree-rings reveal two strong solar proton events in 7176 and 5259 BCE. Nature Communications. 7 March 2022, 13 (1): 1196. Bibcode:2022NatCo..13.1196B. PMC 8901681. PMID 35256613. doi:10.1038/s41467-022-28804-9.
Nicolas Brehm, Marcus Christl, Timothy D. J. Knowles, Emmanuelle Casanova, Richard P. Evershed, Florian Adolphi, Raimund Muscheler, Hans-Arno Synal, Florian Mekhaldi, Chiara I. Paleari, Hanns-Hubert Leuschner, Alex Bayliss, Kurt Nicolussi, Thomas Pichler, Christian Schlüchter, Charlotte L. Pearson, Matthew W. Salzer, Patrick Fonti, Daniel Nievergelt, Rashit Hantemirov, David M. Brown, Ilya Usoskin & Lukas Wacker. Tree-rings reveal two strong solar proton events in 7176 and 5259 BCE. Nature Communications. 7 March 2022, 13 (1): 1196. Bibcode:2022NatCo..13.1196B. PMC 8901681. PMID 35256613. doi:10.1038/s41467-022-28804-9.
Nicolas Brehm, Marcus Christl, Timothy D. J. Knowles, Emmanuelle Casanova, Richard P. Evershed, Florian Adolphi, Raimund Muscheler, Hans-Arno Synal, Florian Mekhaldi, Chiara I. Paleari, Hanns-Hubert Leuschner, Alex Bayliss, Kurt Nicolussi, Thomas Pichler, Christian Schlüchter, Charlotte L. Pearson, Matthew W. Salzer, Patrick Fonti, Daniel Nievergelt, Rashit Hantemirov, David M. Brown, Ilya Usoskin & Lukas Wacker. Tree-rings reveal two strong solar proton events in 7176 and 5259 BCE. Nature Communications. 7 March 2022, 13 (1): 1196. Bibcode:2022NatCo..13.1196B. PMC 8901681. PMID 35256613. doi:10.1038/s41467-022-28804-9.