https://doi.org/10.1051/epjconf/202023202001
Origin of Recent Interstellar 60Fe on Earth
1
Department of Nuclear Physics, Research School of Physics, The Australian National University, Canberra, ACT 2601, Australia.
2
Physik-Department, Technische Universität München, 85748 Garching, Germany
3
Excellence Cluster Universe, 85748 Garching, Germany
* e-mail: dominik.koll@anu.edu.au
Published online: 6 April 2020
Over the last 20 years, evidence for a 2 Myr old supernova 60Fe influx onto Earth was provided by several authors. For the first time, independent investigations of samples from two different geological archives yielded conclusive data for a further, much younger 60Fe influx onto Earth. The origin of this influx is currently unclear because of the limited data available, the lack of consistent astrophysical models and a gap in the data between 50 kyr and 1 Myr. Possible astrophysical scenarios will be discussed with respect to the different influx patterns from different sources and a measurement to close the gap will be proposed.
© The Authors, published by EDP Sciences, 2020
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