Results 31 to 40 of about 13,955 (228)

s-Processing in Asymptotic Giant Branch Stars in the Light of Revised Neutron-Capture Cross Sections

open access: yesUniverse, 2021
Current AGB stellar models provide an adequate description of the s-process nucleosynthesis that occurs. Nonetheless, they still suffer from many uncertainties related to the modeling of the 13C pocket formation and the adopted nuclear reaction rates ...
Diego Vescovi, René Reifarth
doaj   +1 more source

Precise Calculations of Nucleosynthesis Parameters and Electron Self-mass [PDF]

open access: yes, 2023
We study the effect of temperature on beta decay rate during primordial nucleosynthesis. Using thermal contributions to the renormalized mass of electron, we re-compute thermal effects to the nucleosynthesis parameters in the early universe in relation ...
Singh, Jaskeerat, Masood, Samina
core  

Prospect for measurements of (γ, n) reaction cross-sections of p-nuclei at ELI-NP

open access: yesFrontiers in Astronomy and Space Sciences, 2023
The gamma beam system under construction at the ELI-NP facility in Romania is projected to give the nuclear physics community access to an experimental system providing a high-intensity, narrow bandwidth photon beam at variable energy.
P.-A. Söderström   +3 more
doaj   +1 more source

Nucleosynthesis in Novae [PDF]

open access: yesProceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016), 2017
Peer ...
openaire   +1 more source

The s-process Nucleosynthesis [PDF]

open access: yesProceedings 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
openaire   +2 more sources

QUÍMICA ESTELAR E ESTRELAS APOCALÍPTICAS: ESTUDO COMPARATIVO

open access: yesColloquium Exactarum, 2012
All atoms existing in the Universe, except Hydrogen (H) and helium (He), arise from processes occurring in stars and their evolution. The stars transmute the H and He in other heavier elements through nuclear fusion and its process rolling, filling and ...
Nikele Milani   +3 more
doaj   +1 more source

Nucleosynthesis and Kilonovae from Strange Star Mergers

open access: yesUniverse, 2019
In this talk, we summarize the work in progress toward a full characterization of strange star−strange star (SS−SS) mergers related to the GW/GRB/kilonova events.
J. E. Horvath   +5 more
doaj   +1 more source

Big bang nucleosynthesis [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 1999
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]

open access: yes, 2011
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
core   +1 more source

Positron Transport and Annihilation in the Galactic Bulge

open access: yesGalaxies, 2018
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

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