@inproceedings{659d73c91b674ffdaaefdd2ecd347b72,
title = "Search for supernova 60Fe in the Earth's microfossil record",
abstract = "Approximately 2.8 Myr before the present our planet was subjected to the debris of a supernova explosion. The terrestrial proxy for this event was the discovery of live atoms of 60Fe in a deep-sea ferromanganese crust. The signature for this supernova event should also reside in magnetite (Fe 3O4) microfossils produced by magnetotactic bacteria extant at the time of the Earth-supernova interaction, provided the bacteria preferentially uptake iron from fine-grained iron oxides and ferric hydroxides. Using empirically derived microfossil concentrations in a deep-sea drill core, we deduce a conservative estimate of the 60Fe fraction as 60Fe/Fe≈3.6×10-15. This value sits comfortably within the sensitivity limit of present accelerator mass spectrometry capabilities.",
keywords = "biogenic, iron, magnetofossil, magnetosome, sediment, supernova",
author = "S. Bishop and P. Ludwig and R. Egli and T. Faestermann and G. Korschinek and V. Chernenko",
year = "2012",
doi = "10.1063/1.4768494",
language = "English",
isbn = "9780735411128",
series = "AIP Conference Proceedings",
pages = "187--192",
booktitle = "Exotic Nuclei and Nuclear/Particle Astrophysics (IV). From Nuclei to Stars - Carpathian Summer School of Physics 2012",
note = "Carpathian Summer School of Physics 2012: Exotic Nuclei and Nuclear/Particle Astrophysics (IV). From Nuclei to Stars, CSSP 2012 ; Conference date: 24-06-2012 Through 07-07-2012",
}