Results 1 to 10 of about 67,641 (245)
Unveiling the dynamics of little-bang nucleosynthesis. [PDF]
Nat CommunHigh energy nuclear collisions produce light (anti-)nuclei from the quark-gluon plasma via little-bang nucleosynthesis. Here the authors study the microscopic dynamics of little-bang nucleosynthesis producing deuterons and tritons.
Sun KJ, Wang R, Ko CM, Ma YG, Shen C.
europepmc +2 more sources
Primordial nucleosynthesis with varying fundamental constants [PDF]
Astronomy & Astrophysics, 2020 The success of primordial nucleosynthesis as a cornerstone of the hot Big Bang model has been limited by the long-standing lithium problem. Recent work presented a self-consistent perturbative analysis of the effects of variations in nature’s fundamental
M Clara, C. J. A. P. Martins
openalex +3 more sources
Nucleosynthesis and observation of the heaviest elements [PDF]
European Physical Journal A, 2023 The rapid neutron capture or ‘ r process’ of nucleosynthesis is believed to be responsible for the production of approximately half the natural abundance of heavy elements found on the periodic table above iron (with proton number $$Z=26$$ Z = 26 ) and ...
E. Holmbeck, T. Sprouse, M. Mumpower
semanticscholar +1 more source
New models and big bang nucleosynthesis constraints in f(Q) gravity [PDF]
The European Physical Journal C, 2022 The f ( Q ) theories of modified gravity arise from the consideration of non-metricity as the basic geometric quantity, and have been proven to be very efficient in describing the late-time Universe.
Fotios Anagnostopoulos +3 more
semanticscholar +1 more source
Eighteen Years of Kilonova Discoveries with Swift
Universe, 2023 Swift has now completed 18 years of mission, during which it discovered thousands of gamma-ray bursts as well as new classes of high-energy transient phenomena.
Eleonora Troja
doaj +1 more source
Neutrino decoupling including flavour oscillations and primordial nucleosynthesis [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 We revisit the decoupling of neutrinos in the early universe with flavour oscillations. We rederive the quantum kinetic equations which determine the neutrino evolution based on a BBGKY-like hierarchy, and include for the first time the full collision ...
Julien Froustey, C. Pitrou, M. Volpe
semanticscholar +1 more source
Universe, 2022 Presolar grains are microscopic dust grains that formed in the stellar winds or explosions of ancient stars that died before the formation of the solar system.
Nan Liu, Sergio Cristallo, Diego Vescovi
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Magnetic-buoyancy-induced mixing in AGB stars: Fluorine nucleosynthesis at different metallicities [PDF]
Astronomy & Astrophysics, 2021 Asymptotic giant branch (AGB) stars are considered to be among the most significant contributors to the fluorine budget in our Galaxy. While observations and theory agree at close-to-solar metallicity, stellar models at lower metallicities overestimate ...
D. Vescovi +4 more
semanticscholar +1 more source
The building blocks of the universe
HTS Teologiese Studies/Theological Studies, 2021 I review the state of knowledge of the composition of the universe for a non-specialist audience. The universe is built up of four components. These are radiation, baryonic (ordinary) matter, dark matter and dark energy.
Anslyn J. John
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Solar data uncertainty impacts on MCMC methods for r-process nucleosynthesis
Frontiers in Physics, 2022 In recent work, we developed a Markov Chain Monte Carlo (MCMC) procedure to predict the ground state masses capable of forming the observed Solar r-process rare-earth abundance peak.
Nicole Vassh +4 more
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