On deep-ocean as a fossil of a near-earth supernova

@article{Fields1998OnDA,
  title={On deep-ocean as a fossil of a near-earth supernova},
  author={B. Fields and J. Ellis},
  journal={New Astronomy},
  year={1998},
  volume={4},
  pages={419-430}
}
Abstract Live 60 Fe has recently been reported in a deep-ocean ferromanganese crust. Analysis of the isotopic ratios in the sample suggests that the measured 60 Fe abundance exceeds the levels generated by terrestrial and cosmogenic sources, and it has been proposed that the excess of 60 Fe is a signature of a supernova that exploded near the earth several Myr ago. In this paper, we consider the possible background sources, and confirm that the measured 60 Fe is significantly higher than all… Expand
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TLDR
A well resolved time profile of the 60Fe concentration in a deep-sea ferromanganese crust is measured and a highly significant increase 2.8 Myr ago is found. Expand
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An excess of 60Fe in 2.4-3.2 x 10(6) year old ferromanganese crust from the deep Pacific Ocean can be plausibly explained by the presence of micrometeorites trapped by the crust, rather than injection from a supernova source. Expand
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The discovery of radionuclides like 60Fe with half-lives of million years in deep-sea crusts and sediments offers the unique possibility to date and locate nearby supernovae. We want to… Expand
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