Results 1 to 10 of about 27,565 (66)
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
openaire +6 more sources
On deep-ocean as a fossil of a near-earth supernova [PDF]
New Astronomy, 1999 18 pages, AASTeX, 1 ps ...
John Ellis, Brian D. Fields
openaire +5 more sources
Near-Earth supernova activity during the past 35 Myr
, 2017 Submitted to MNRAS.
Sørensen, Mads +2 more
+6 more sources
Near-Earth Supernova Explosions: Evidence, Implications, and Opportunities
, 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
openaire +6 more sources
Distances to Recent Near-Earth Supernovae from Geological and Lunar 60Fe
The Astrophysical JournalNear-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 ^60 Fe pointing to a supernova at 3 Myr ago, as well as the recent discovery
Adrienne F. Ertel, Brian D. Fields
doaj +3 more sources
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
openaire +3 more sources
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
openaire +2 more sources
Supernova Dust Evolution Probed by Deep-sea 60Fe Time History
The Astrophysical Journal, 2023 There is a wealth of data on live, undecayed ^60 Fe ( t _1/2 = 2.6 Myr) in deep-sea deposits, the lunar regolith, cosmic rays, and Antarctic snow, which is interpreted as originating from the recent explosions of at least two near-Earth supernovae.
Adrienne F. Ertel +3 more
doaj +1 more source
Deep Underground Science and Engineering, Volume 1, Issue 2, Page 131-137, December 2022., 2022 General plan of the in‐situ experiment (WNS) base. Abstract This paper introduces the establishment of deep underground infrastructure for science and engineering research. First, the representative deep underground research laboratories and facilities in the world and their functions were summarized and reviewed.
Lihua Hu +5 more
wiley +1 more source
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 ...
Stephen G. Tims +14 more
openaire +3 more sources