par Fitoussi, Caroline;Raisbeck, Grant M.;Knie, Klaus;Korschinek, Gunther;Faestermann, Thomas;Goriely, Stéphane 
;Lunney, David;Poutivtsev, Michail;Rugel, Georg;Waelbroeck, Claire;Wallner, Anton
Référence Physical Review Letters, 101, 12, page (121101)
Publication Publié, 2008
;Lunney, David;Poutivtsev, Michail;Rugel, Georg;Waelbroeck, Claire;Wallner, AntonRéférence Physical Review Letters, 101, 12, page (121101)
Publication Publié, 2008
Article révisé par les pairs
| Résumé : | An 60Fe peak in a deep-sea FeMn crust has been interpreted as due to the signature left by the ejecta of a supernova explosion close to the solar system 2.8+/-0.4 Myr ago [Knie, Phys. Rev. Lett. 93, 171103 (2004)10.1103/PhysRevLett.93.171103]. In an attempt to confirm this interpretation with better time resolution and obtain a more direct flux estimate, we measured 60Fe concentrations along a dated marine sediment. We find no 60Fe peak at the expected level from 1.7 to 3.2 Myr ago. Possible causes for the discrepancy are discussed. |
