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

Tables from this paper

Deep-Ocean Crusts as Telescopes: Using Live Radioisotopes to Probe Supernova Nucleosynthesis
Live 60Fe has recently been detected in a deep-ocean ferromanganese crust, isolated in layers dating from about 3 Myr ago. Since 60Fe has a mean life of 2.2 Myr, a near-Earth supernova is the onlyExpand
Terrestrial impact of the galactic historical SNe
Abstract Galactic supernovae (SNe) of the last millennium have left their signatures in many energy domains, with the optical being the best known due to the absence of astronomical instrumentsExpand
Astrophysical Shrapnel: Discriminating among Near-Earth Stellar Explosion Sources of Live Radioactive Isotopes
We consider the production and deposition on Earth of isotopes with half-lives in the range 105-108 yr that might provide signatures of nearby stellar explosions, extending previous analyses ofExpand
60Fe anomaly in a deep-sea manganese crust and implications for a nearby supernova source.
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
Galactic-cosmic-ray-produced 3He in a ferromanganese crust: any supernova 60Fe excess on earth?
TLDR
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
Experimental Limit to Interstellar 244Pu Abundance
Short-lived nuclides, now extinct in the solar system, are expected to be present in the interstellar medium (ISM). Grains of ISM origin were recently discovered in the inner solar system and atExpand
A window on nucleosynthesis through detection of short-lived radionuclides
Abstract The detection of cosmic γ radioactivity of live nuclides from supernovae remnants during the last decade has had an immense impact on our understanding of stellar nucleosynthesis. It isExpand
Live radioisotopes as signatures of nearby supernovae
Abstract Nearby (≲1 kpc) supernovae were almost certainly common in earth’s geological history. Such events allow the direct study of their freshly synthesized live radioisotopes, opening new windowsExpand
Footprints of the newly discovered Vela supernova in Antarctic ice cores
The recently discovered, nearby young supernova remnant in the southeast corner of the older Vela supernova remnant may have been seen in measurements of nitrate abundances in Antarctic ice cores.Expand
Numerical studies on the link between radioisotopic signatures on Earth and the formation of the Local Bubble. I. 60Fe transport to the solar system by turbulent mixing of ejecta from nearby supernovae into a locally homogeneous interstellar medium
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 toExpand
...
1
2
3
...

References

SHOWING 1-10 OF 37 REFERENCES
Geological Isotope Anomalies as Signatures of Nearby Supernovae
Nearby supernova explosions may cause geological isotope anomalies via the direct deposition of debris or by cosmic-ray spallation in the earth's atmosphere. We estimate the mass of materialExpand
Could a nearby supernova explosion have caused a mass extinction?
  • J. Ellis, D. Schramm
  • Physics, Medicine
  • Proceedings of the National Academy of Sciences of the United States of America
  • 1995
TLDR
It is examined the possibility that a nearby supernova explosion could have caused one or more of the mass extinctions identified by paleontologists, and the possible rate of such events is discussed. Expand
Frequency of nearby supernovae and climatic and biological catastrophes
MCCREA1,2 has proposed that the encounter of the Solar System with a dense cloud of interstellar material during its passage through a spiral arm of the Galaxy may produce such climatic catastrophesExpand
10Be in marine sediments, Earth's environment and cosmic rays
COSMIC RAYS create the long-lived radioactive nuclide 10Be (half life: 1.5 M yr) continuously in the upper atmosphere as a result of nuclear disintegrations. It enters the oceans through variousExpand
Emission from 44Ti associated with a previously unknown Galactic supernova
Nearly 400 years have passed since a supernova was last observed directly in the Milky Way (by Kepler, in 1604). Numerous Galactic supernovae are expected to have occurred since then, but only oneExpand
Accretion of extraterrestrial matter during the last 80 million years and its effect on the marine osmium isotope record
The flux of particulate extraterrestrial (ET) matter to the deep-sea has been calculated using a four-component mixing model based on osmium concentrations and isotope ratios in slowly accumulatingExpand
On the production of cosmogenic nuclides in meteoroids by galactic protons
— A purely physical model is presented describing the depth- and size-dependence of the production of cosmogenic nuclides in meteoroids with radii up to 85 cm and in planetary surfaces by galacticExpand
Extra-terrestrial 53Mn in Antarctic ice
The reasons why ⁵³Mn (a cosmogenic radionuclide with a halflife of 3.7 x 10⁶y) appears as one of the best indicators of the presence of interplanetary dust are summarized. This paper reports theExpand
Cosmic-ray-produced iron 60 in Odessa meteorite
It has been assumed that the long-lived radionuclide Fe60(t1/2 ∼ 1.0 · 105 yr) was produced by cosmic radiation in meteorites. Until now its detection was prevented (1) because its concentration isExpand
Discovery of a young nearby supernova remnant
About 200 supernova remnants have been found in the galaxy, six of which are younger than about 1,000 years (ref. 2). Observations of these young remnants are important for understanding of the lateExpand
...
1
2
3
4
...