Search for supernova-produced Fe60 in a marine sediment

C. Fitoussi*, G. M. Raisbeck, K. Knie, G. Korschinek, T. Faestermann, S. Goriely, D. Lunney, M. Poutivtsev, G. Rugel, C. Waelbroeck, A. Wallner

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

83 Citations (Scopus)

Abstract

An Fe60 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±0.4Myr ago. In an attempt to confirm this interpretation with better time resolution and obtain a more direct flux estimate, we measured Fe60 concentrations along a dated marine sediment. We find no Fe60 peak at the expected level from 1.7 to 3.2 Myr ago. Possible causes for the discrepancy are discussed.

Original languageEnglish
Article number121101
JournalPhysical Review Letters
Volume101
Issue number12
DOIs
Publication statusPublished - 19 Sept 2008
Externally publishedYes

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