| Literature DB >> 18851357 |
C Fitoussi1, G M Raisbeck, K Knie, G Korschinek, T Faestermann, S Goriely, D Lunney, M Poutivtsev, G Rugel, C Waelbroeck, A Wallner.
Abstract
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.Entities:
Year: 2008 PMID: 18851357 DOI: 10.1103/PhysRevLett.101.121101
Source DB: PubMed Journal: Phys Rev Lett ISSN: 0031-9007 Impact factor: 9.161