Results 81 to 90 of about 173,669 (191)
Challenges in nucleosynthesis of trans-iron elements
AIP Advances, 2014 Nucleosynthesis beyond Fe poses additional challenges not encountered when studying astrophysical processes involving light nuclei. Astrophysical sites and conditions are not well known for some of the processes involved.
T. Rauscher
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Improved BBN constraints on the variation of the gravitational constant
European Physical Journal C: Particles and Fields, 2020 Big Bang Nucleosynthesis (BBN) is very sensitive to the cosmological expansion rate. If the gravitational constant G took a different value during the nucleosynthesis epoch than today, the primordial abundances of light elements would be affected.
James Alvey +3 more
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A mechanism to account for well known peculiarities of low mass AGB star nucleosynthesis
EPJ Web of Conferences, 2017 We present here the application of a model for a mass circulation mechanism induced by the stellar magnetic field to study peculiar aspects of AGB star nucleosynthesis. The mixing scheme is based on a previously suggested magnetic-buoyancy process [1, 2]
Palmerini Sara +3 more
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Evolution of Massive Population III Stars
Acta Polytechnica CTU Proceedings, 2014 While the evolution of massive stars in the local Universe is dominated by mass-loss, the evolution of massive Population III stars should be dominated by rotation.
Sung-Chul Yoon
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Nuclear astrophysics at Gran Sasso Laboratory: the LUNA experiment
EPJ Web of Conferences, 2018 LUNA is an experimental approach for the study of nuclear fusion reactions based on an underground accelerator laboratory. Aim of the experiment is the direct measurement of the cross section of nuclear reactions relevant for stellar and primordial ...
Cavanna Francesca
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86th Annual Meeting of the Meteoritical Society (2024)
Meteoritics &Planetary Science, Volume 59, Issue S1, Page i-xlii, August 2024.
wiley +2 more sources
EPJ Web of Conferences, 2018 This contribution deals with the important subject of the nucleosynthesis of heavy elements in the Galaxy. After an overview of several observational features, the physical processes responsible mainly for the formation of heavy elements will be ...
El Eid Mounib F.
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Re-examining Neutron Capture and Stellar Weak Rates of 97Mo under Astrophysical Conditions
Cumhuriyet Science JournalThis paper presents a re-analysis of neutron capture and stellar weak interaction rates of 97Mo under astrophysical conditions. The Maxwellian-averaged cross sections (MACS), neutron capture rates, and β^- decay/positron capture rates are investigated ...
Jameel-un Nabi +2 more
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Studying stars by going underground: the LUNA experiment at Gran Sasso Laboratory
EPJ Web of Conferences, 2014 Cross sections of astrophysically relevant reactions are essential ingredients for element nucleosynthesis, energy generation and neutrino fluxes in stellar environments.
Guglielmetti Alessandra
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Direct study of the 21Ne(p,γ)22Na reaction deep underground at LUNA [PDF]
EPJ Web of ConferencesThe 21Ne(p,γ)22Na reaction is part of the NeNa cycle, which contributes to hydrogen burning and nucleosynthesis in various stellar environments. The major astrophysical impact of this reaction is the production of the unstable nucleus of 22Na, recognized
Sidhu Ragandeep Singh
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