• DOI:10.1071/AS11070
• Corpus ID: 59404268

The Search for Supernova-Produced Radionuclides in Terrestrial Deep-Sea Archives

@article{Feige2012TheSF,
  title={The Search for Supernova-Produced Radionuclides in Terrestrial Deep-Sea Archives},
  author={Jenny Feige and Anton Wallner and Stephan Winkler and Silke Merchel and Leslie Keith Fifield and G. Korschinek and Georg Rugel and Dieter Breitschwerdt},
  journal={Publications of the Astronomical Society of Australia},
  year={2012},
  volume={29},
  pages={109 - 114}
}

• J. Feige, A. Wallner, +5 authors D. Breitschwerdt
• Published 21 March 2012
• Environmental Science, Physics
• Publications of the Astronomical Society of Australia

Abstract An enhanced concentration of 60Fe was found in a deep ocean crust in 2004 in a layer corresponding to an age of ∼2 Myr. The confirmation of this signal in terrestrial archives as supernova-induced and the detection of other supernova-produced radionuclides is of great interest. We have identified two suitable marine sediment cores from the South Australian Basin and estimated the intensity of a possible signal of the supernova-produced radionuclides 26Al, 53Mn, 60Fe, and the pure r-process element 244Pu in these cores. The finding of these radionuclides in a sediment core might allow us to improve the time resolution of the signal and thus to link the signal to a supernova event in the solar vicinity ∼2 Myr ago. Furthermore, it gives us an insight into nucleosynthesis scenarios in massive stars, condensation into dust grains and transport mechanisms from the supernova shell into the solar system.