Phys. Rev. Lett. 101, 121101 (2008) - Search for Supernova-Produced $^{60}\mathrm{Fe}$ in a Marine Sediment

Search for Supernova-Produced ${}^{60}{Fe}$ 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, and A. Wallner

Phys. Rev. Lett. 101, 121101 – Published 19 September 2008

Abstract

An ${}^{60}{Fe}$ 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 $2.8 \pm 0.4 Myr$ ago [Knie et al., Phys. Rev. Lett. 93, 171103 (2004)]. In an attempt to confirm this interpretation with better time resolution and obtain a more direct flux estimate, we measured ${}^{60}{Fe}$ concentrations along a dated marine sediment. We find no ${}^{60}{Fe}$ peak at the expected level from 1.7 to 3.2 Myr ago. Possible causes for the discrepancy are discussed.

Received 10 August 2007

DOI:https://doi.org/10.1103/PhysRevLett.101.121101

Authors & Affiliations

C. Fitoussi¹, G. M. Raisbeck¹, K. Knie^2,5, G. Korschinek², T. Faestermann², S. Goriely³, D. Lunney¹, M. Poutivtsev², G. Rugel², C. Waelbroeck⁴, and A. Wallner⁵

¹Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM) IN2P3/CNRS, Université Paris Sud, Bâtiment 108, 91405 Orsay, France
²Fakultät für Physik, Technische Universität München, James-Franck-Straße 1, 85747 Garching, Germany
³Institut d’Astronomie et d’Astrophysique, C.P. 226, Université Libre de Bruxelles, Boulevard Du Triomphe, B-1050 Brussels, Belgium
⁴Laboratoire des Sciences du Climat et de l’Environnement, Domaine du CNRS, 91198 Gif-sur-Yvette, France
⁵VERA Laboratory, Fakultät für Physik, Universität Wien, Währinger Straße 17, A-1090 Vienna, Austria

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Vol. 101, Iss. 12 — 19 September 2008

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Physical Review Letters

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, and A. Wallner

Phys. Rev. Lett. 101, 121101 – Published 19 September 2008

Abstract

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Search for Supernova-Produced ${}^{60}{Fe}$ in a Marine Sediment