Tellurium in pre-solar diamonds as an indicator for rapid separation of supernova ejecta
Article Abstract:
Carbonaceous meteorites have several types of dust grains, with diamonds being the most abundant, hosting the isotopically anomalous Xe-H component. The isotope abundance ratio of the Xe-H is not accounted for by the canonical processes controlling nucleosynthesis of elements heavier than iron. It is noted that the standard r-process nucleosynthesis could work if stable isotopes were isolated from radioactive precursors. Measurements back the suggestion that isotopes were separated and the neutron-capture process could not produce observed abundances.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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Emission from (super44)Ti associated with a previously unknown Galactic supernova
Article Abstract:
The supernovae historical record is incomplete as shown by the spatial distribution f young supernova remnants. The discovery of gamma-ray emission from decay of (super44)Ti nuclei linked with Cassiopeia A, has provided a new method of searching for remnants of other comparatively recent supernovae. A (super44) line emission from a previously unknown supernova remnant has been discovered, with an estimated distance of 200 parsecs and age of 680 years.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1998
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A very energetic supernova associated with the gamma-ray burst of 29 March 2003
Article Abstract:
The association of gamma-ray burst (GBR) with a supernova are discussed. This discussion is carried on in relation to the GRB of 29 March 2003.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2003
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