Results 81 to 90 of about 66,893 (303)

Full Transport General Relativistic Radiation Magnetohydrodynamics for Nucleosynthesis in Collapsars [PDF]

open access: yesAstrophysical Journal, 2019
We model a compact black hole-accretion disk system in the collapsar scenario with full transport, frequency dependent, general relativistic radiation magnetohydrodynamics.
J. Miller   +6 more
semanticscholar   +1 more source

Structure formation cosmic rays: Identifying observational constraints [PDF]

open access: yesSerbian 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.
doaj   +1 more source

Following Fission Products in Explosive Astrophysical Environments [PDF]

open access: yesEPJ Web of Conferences, 2020
The astrophysical process by which the heaviest elements are formed in the universe is known as the rapid neutron capture process, or r process, of nucleosynthesis.
Sprouse T. M., Mumpower M. R., Surman R.
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   +6 more sources

Leptonic photons and nucleosynthesis [PDF]

open access: yesPhysics Letters B, 1997
4 pages, LaTeX.
J.A. Grifols   +2 more
openaire   +4 more sources

The NuGrid AGB Evolution and Nucleosynthesis Data Set

open access: yesUniverse, 2022
Asymptotic Giant Branch (AGB) stars play a key role in the chemical evolution of galaxies. These stars are the fundamental stellar site for the production of light elements such as C, N and F, and half of the elements heavier than Fe via the slow neutron
Umberto Battino   +4 more
doaj   +1 more source

Impact of AGB Stars on the Chemical Evolution of Neutron-Capture Elements

open access: yesUniverse, 2022
In this review, we discuss the impact of s-process nucleosynthesis in asymptotic giant branch stars on the enrichment of heavy elements. We review the main steps made on this subject in the last 40 years and discuss the importance of modelling the ...
Gabriele Cescutti, Francesca Matteucci
doaj   +1 more source

The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. IV. Detection of Near-infrared Signatures of r-process Nucleosynthesis with Gemini-South [PDF]

open access: yes, 2017
We present a near-infrared spectral sequence of the electromagnetic counterpart to the binary neutron star merger GW170817 detected by Advanced Laser Interferometer Gravitational-wave Observatory (LIGO)/Virgo.
R. Chornock   +37 more
semanticscholar   +1 more source

Nucleosynthesis in the Early Galaxy [PDF]

open access: yesThe Astrophysical Journal, 2007
Recent observations of r-process-enriched metal-poor star abundances reveal a non-uniform abundance pattern for elements $Z\leq47$. Based on non-correlation trends between elemental abundances as a function of Eu-richness in a large sample of metal-poor stars, it is shown that the mixing of a consistent and robust light element primary process (LEPP ...
Marco Pignatari   +14 more
openaire   +4 more sources

Indirect Measurements of n- and p-Induced Reactions of Astrophysical Interest on Oxygen Isotopes

open access: yesFrontiers in Astronomy and Space Sciences, 2020
Observations of abundances and isotopic ratio determinations in stars yield powerful constraints on stellar models. In particular, the oxygen isotopic ratios are of particular interest because they are affected not only by nucleosynthesis but also by ...
M. L. Sergi   +12 more
doaj   +1 more source

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