Simulations of 60Fe entrained in ejecta from a near-Earth supernova: effects of observer motion [PDF]
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT Recent studies have shown that live (not decayed) radioactive 60Fe is present in deep-ocean samples, Antarctic snow, lunar regolith, and cosmic rays. 60Fe represents supernova (SN) ejecta deposited in the Solar system around $3 \, \rm Myr$ ago, and recently an earlier pulse ${\approx}7 \ \rm Myr$ ago has been found.
Evgenii Chaikin +3 more
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Near-Earth Supernova Explosions: Evidence, Implications, and Opportunities [PDF]
, 2019 There is now solid experimental evidence of at least one supernova explosion within 100 pc of Earth within the last few million years, from measurements of the short-lived isotope 60Fe in widespread deep-ocean samples, as well as in the lunar regolith and cosmic rays. This is the first established example of a specific dated astrophysical event outside
Fields, Brian +38 more
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Near-Earth supernova activity during the past 35 Myr [PDF]
, 2017 Submitted to MNRAS.
Sørensen, Mads +2 more
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On deep-ocean as a fossil of a near-earth supernova [PDF]
New Astronomy, 1999 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 ...
Brian D. Fields, John Ellis
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r-Process Radioisotopes from Near-Earth Supernovae and Kilonovae [PDF]
The Astrophysical Journal, 2021 Abstract The astrophysical sites where r-process elements are synthesized remain mysterious: it is clear that neutron star mergers (kilonovae (KNe)) contribute, and some classes of core-collapse supernovae (SNe) are also possible sources of at least the lighter r-process species.
Xilu Wang (王夕露) +8 more
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Near-Earth Supernovae in the Past 10 Myr: Implications for the Heliosphere
Bulletin of the AAS, 2023 We summarize evidence that multiple supernovae exploded within 100 pc of Earth in the past few Myr. These events had dramatic effects on the heliosphere, compressing it to within ~20 au. We advocate for cross-disciplinary research of nearby supernovae, including on interstellar dust and cosmic rays.
Jesse Miller +12 more
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Recent near-Earth supernovae probed by global deposition of interstellar radioactive 60Fe [PDF]
Nature, 2016 The rate of supernovae in our local Galactic neighbourhood within a distance of about 100 parsecs from Earth is estimated to be one every 2-4 million years, based on the total rate in the Milky Way (2.0 ± 0.7 per century). Recent massive-star and supernova activity in Earth's vicinity may be traced by radionuclides with half-lives of up to 100 million ...
Wallner, A. +14 more
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Inference of bipolar neutrino flavor oscillations near a core-collapse\n supernova, based on multiple measurements at Earth [PDF]
, 2022 Eve Armstrong +6 more
openalex +3 more sources
Distances to Recent Near-Earth Supernovae from Geological and Lunar 60Fe
The Astrophysical JournalAbstract Near-Earth supernova blasts which engulf the solar system have left traces of their ejecta in the geological and lunar records. There is now a wealth of data on live radioactive 60Fe pointing to a supernova at 3 Myr ago, as well as the recent discovery of an event at 7 Myr ago.
Adrienne F. Ertel, Brian D. Fields
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On Deep-Ocean Fe-60 as a Fossil of a Near-Earth Supernova
, 1998 18 pages, AASTeX, 1 ps ...
Fields, Brian D., Ellis, John
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