Results 11 to 20 of about 10,538 (228)
Primordial Nucleosynthesis [PDF]
Journal of Physics: Conference Series, 2013 Invited Plenary Talk given at the 11th International Conference on Nucleus-Nucleus Collisions (NN2012), San Antonio, Texas, USA, May 27-June 1, 2012. To appear in the NN2012 Proceedings in Journal of Physics: Conference Series (JPCS)
Coc, A.
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Big Bang Nucleosynthesis [PDF]
Proceedings of International Symposium on Nuclear Astrophysics - Nuclei in the Cosmos - IX — PoS(NIC-IX), 2010 Big bang nucleosynthesis is reviewed with taking into account the observed abundance of light elements. We examine the standard big bang nucleosynthesis (SBBN) and confirm that helium abundance is not enough to fix the baryon to photon ratio η.As for ...
Arai, Kenzo +9 more
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The s-process Nucleosynthesis [PDF]
Proceedings of the International Astronomical Union, 2005 Theoretical as well as observational aspects of the s-process nucleosynthesis are reviewed. The classical site-independent s-process model as well as the s-process in massive stars are shortly described. A special attention is paid to the nucleosynthesis taking place in AGB stars and the extra-mixing invoked to explain the production of neutrons in the
Goriely, Stéphane, Siess, Lionel
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One of the most compelling pieces of evidence of the Hot Big Bang model is the realisation and confirmation that some nuclides were created shortly after the Big Bang. This process is referred to as Big Bang nucleosynthesis (or, sometimes, primordial nucleosynthesis), and is the end-product of putting neutrons and protons in a hot, expanding Universe ...
Cooke, Ryan
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EAS Publications Series, 2003 This lecture gives an introduction to the topic of supernova nucleosynthesis which is at the origin of almost all nuclear species that we encounter in the Universe.
J. Knödlseder
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Neutrino nucleosynthesis [PDF]
Physics Letters B, 2005 We study neutrino process nucleosynthesis in massive stars using newly calculated cross sections, an expanded reaction network, and complete and self-consistent models of the progenitor star. We reevaluate the production of light isotopes from abundant progenitors as well as that of rare, heavy, proton-rich isotopes.
Heger, A. +5 more
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Hypernovae and their nucleosynthesis [PDF]
Symposium - International Astronomical Union, 2003 We review the characteristics of nucleosynthesis in ‘hypernovae’, i.e., core-collapse supernovae with very large explosion energies (≳ 1052 ergs). The hypernova yields show the following characteristics: (i) the mass ratio between the complete and incomplete Si burning regions is larger in hypernovae than normal supernovae.
Nomoto, Ken'ichi +5 more
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The role of neutrinos in explosive nucleosynthesis in core collapse supernova models with neutrino transport [PDF]
, 2007 The problem of core collapse supernova explosions is long standing and attempts to understand the mechanism have been ongoing. On one hand, a full understanding of the underlying mechanism is still pending.
Fröhlich, Carla
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Structure formation cosmic rays: Identifying observational constraints [PDF]
Serbian Astronomical Journal, 2005 Shocks that arise from baryonic in-fall and merger events during the structure formation are believed to be a source of cosmic rays. These "structure formation cosmic rays" (SFCRs) would essentially be primordial in composition, namely, mostly made of ...
Prodanović T., Fields B.D.
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Magellanic Clouds Cepheids: Thorium Abundances [PDF]
Journal of Astronomy and Space Sciences, 2018 The analysis of the high-resolution spectra of 31 Magellanic Clouds Cepheid variables enabled the identification of thorium lines. The abundances of thorium were found with spectrum synthesis method. The calculated thorium abundances exhibit correlations
Yeuncheol Jeong +5 more
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