Results 31 to 40 of about 13,537 (199)
Nucleosynthesis in Novae [PDF]
Peer ...
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Positron Transport and Annihilation in the Galactic Bulge
The annihilation of positrons in the Milky Way Galaxy has been observed for ∼50 years; however, the production sites of these positrons remains hard to identify.
Fiona Helen Panther
doaj +1 more source
Big bang nucleosynthesis [PDF]
The concordance of standard big bang nucleosynthesis theory and the related observations of the light element isotopes (including some new higher \he4 abundances) will be reviewed. Implications of BBN on chemical evolution, dark matter and constraints on particle properties will be discussed.
openaire +4 more sources
Neutrino oscillations at high densities: cosmological and astrophysical aspects [PDF]
This doctoral thesis treats the effects of neutrino oscillations in the early universe and supernovae. The main probe for the context of the early universe is big bang nucleosynthesis (BBN).
Sarikas, Srdjan
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Leptonic photons and nucleosynthesis [PDF]
Should $U(1)$ long-range forces be associated to electron, muon and/or tau quantum number then their ''fine structure constants" are seen to be bound by nucleosynthesis data to be less than about $1.7 \times 10^{-11}$.
Grifols, J. A., Masso, E.
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Nuclear reactions involving light elements & BBN [PDF]
Light elements play a key role in different scenario in astrophysics, ranging from primordial nucleosynthesis up to stellar nucleosynthesis and cosmic ray nucleosynthesis.
Lamia L.
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Nucleosynthesis in the Early Galaxy [PDF]
Recent observations of r-process-enriched metal-poor star abundances reveal a non-uniform abundance pattern for elements $Z\leq47$. Based on non-correlation trends between elemental abundances as a function of Eu-richness in a large sample of metal-poor stars, it is shown that the mixing of a consistent and robust light element primary process (LEPP ...
Montes, F. +10 more
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Nucleosynthesis in classical novae [PDF]
A general review of the relevance of classical novae for the chemical evolution of the Galaxy, as well as for Galactic radioactivity is presented. A special emphasis is put on the pioneering work done by Jim Truran in this field of research. The impact of recent developments in nuclear astrophysics on nova nucleosynthesis, together with the prospects ...
Hernanz, M., Jose, J., Coc, A.
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Mergers of Binary Neutron Star Systems: A Multimessenger Revolution
On August 17, 2017, less than two years after the direct detection of gravitational radiation from the merger of two∼30 M⊙ black holes, a binary neutron star merger was identified as the source of a gravitational wave signal of ∼100 s duration that ...
Elena Pian
doaj +1 more source
Dust formation and evolution in the ejecta of core-collapse supernovae [PDF]
Observations of local supernovae over the past couple of decades have reported the presence of dust in the ejecta. The dust masses inferred from observations in mid-infrared and submillimeter wavelengths differ by a factor of 10^2 to 10^4 The composition
Sarangi, Arkaprabha
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