Results 121 to 130 of about 52,014 (259)

Constraining Antimatter Domains in the Early Universe with Big Bang Nucleosynthesis

, 2000
We consider the effect of a small-scale matter-antimatter domain structure on big bang nucleosynthesis and place upper limits on the amount of antimatter in the early universe.
A. D. Dolgov, A. G. Cohen, A. G. Cohen, A. S. Sudov, B. E. J. Pagel, D. J. Fixsen, D. Lindley, D. Lindley, D. N. Schramm, D. Polster, E. Holtmann, E. L. Wright, Elina Sihvola, F. Balestra, F. Balestra, F. Balestra, F. Balestra, F. Combes, G. Sigl, G. Steigman, G. Yepes, Hannu Kurki-Suonio, J. Audouze, J. B. Rehm, J. D. Jackson, J. Ellis, J. Ellis, J. J. Aly, K. Jedamzik, M. Giovannini, M. Giovannini, M. H. Reno, M. Kawasaki, R. Domínguez-Tenreiro, R. J. Protheroe, S. Dimopoulos, S. Dimopoulos, S. Dimopoulos, T. von Egidy, V. M. Chechetkin, Yu. A. Batusov   +40 more
core   +1 more source

Production of Lithium and Heavy Elements in AGB Stars Experiencing PIEs

Galaxies
Asymptotic giant branch (AGB) stars can experience proton ingestion events (PIEs), leading to a rich nucleosynthesis. During a PIE, the intermediate neutron capture process (i-process) develops, leading to the production of trans-iron elements.
Arthur Choplin, Lionel Siess, Stephane Goriely, Sebastien Martinet   +3 more
doaj   +1 more source

Machine learning opportunities for nucleosynthesis studies

Frontiers in Astronomy and Space Sciences
Nuclear astrophysics is an interdisciplinary field focused on exploring the impact of nuclear physics on the evolution and explosions of stars and the cosmic creation of the elements.
Michael S. Smith, Dan Lu
doaj   +1 more source

Constraints on Tsallis Cosmology from Big Bang Nucleosynthesis and the Relic Abundance of Cold Dark Matter Particles. [PDF]

Entropy (Basel), 2023
Jizba P, Lambiase G.
europepmc   +1 more source

Constraints on Baryon and Lepton Number Asymmetries of the Early Universe from Primordial Nucleosynthesis [PDF]

, 1984
N. Terasawa, K. Satô
openalex   +1 more source

Explosive Nucleosynthesis

, 2022
Cosmic nucleosynthesis had been one of INTEGRAL’s major science targets. The SPI spectrometer delivered important measurements, both from targets of opportunity in the form of stellar explosions and their shortlived radionuclides, and from cumulative emission of long-lived radioactive isotopes. We review the lessons learned on explosive nucleosynthesis
openaire   +1 more source

On relative supernova rates and nucleosynthesis roles [PDF]

, 1989
W. David Arnett, David N. Schramm, James W. Truran   +2 more
openalex   +1 more source

Nucleosynthesis and Gamma-Ray Line Spectroscopy with INTEGRAL

, 2011
Cosmic nucleosynthesis co-produces unstable isotopes, which emit characteristic gamma-ray emission lines upon their radioactive decay that can be measured with SPI on INTEGRAL.
Diehl, Roland
core  

Quark-hadron phase transition in the early Universe: Isothermal baryon-number fluctuations and primordial nucleosynthesis [PDF]

, 1988
G. M. Fuller, G. J. Mathews, C. R. Alcock   +2 more
openalex   +1 more source

A metal-poor star with abundances from a pair-instability supernova. [PDF]

Nature, 2023
Xing QF, Zhao G, Liu ZW, Heger A, Han ZW, Aoki W, Chen YQ, Ishigaki MN, Li HN, Zhao JK.   +9 more
europepmc   +1 more source