@inproceedings{03eff5fecdfa4301848d716a460497e0,
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≈3.6x10-15. 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 G. Rugel",
year = "2012",
doi = "10.1063/1.4763374",
language = "English",
isbn = "9780735410961",
series = "AIP Conference Proceedings",
pages = "63--68",
booktitle = "Origin of Matter and Evolution of Galaxies 2011",
note = "International Symposium on Origin of Matter and Evolutions of Galaxies 2011, OMEG 2011 ; Conference date: 14-11-2011 Through 17-11-2011",
}