Results 31 to 40 of about 21,814 (256)

Nucleosynthesis in multinucleon transfer reactions

open access: yesEuropean Physical Journal A, 2022
How does one populate still vacant areas on the chart of nuclides? Mainly on the neutron-rich side several thousand further isotopes are expected to exist, including most of the nuclei along the astrophysical r-process path.
S. Heinz, H. M. Devaraja
semanticscholar   +1 more source

Magnetic-buoyancy-induced mixing in AGB stars: Fluorine nucleosynthesis at different metallicities [PDF]

open access: yesAstronomy & 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

Spectroscopic identification of r-process nucleosynthesis in a double neutron-star merger [PDF]

open access: yesNature, 2017
The merger of two neutron stars is predicted to give rise to three major detectable phenomena: a short burst of γ-rays, a gravitational-wave signal, and a transient optical–near-infrared source powered by the synthesis of large amounts of very heavy ...
E. Pian   +83 more
semanticscholar   +1 more source

Numerical Relativity Simulations of the Neutron Star Merger GW170817: Long-term Remnant Evolutions, Winds, Remnant Disks, and Nucleosynthesis [PDF]

open access: yes, 2020
We present a systematic numerical relativity study of the dynamical ejecta, winds, and nucleosynthesis in neutron star (NS) merger remnants. Binaries with the chirp mass compatible with GW170817, different mass ratios, and five microphysical equations of
V. Nedora   +9 more
semanticscholar   +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 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

Binary Neutron Star Mergers: Mass Ejection, Electromagnetic Counterparts, and Nucleosynthesis [PDF]

open access: yesAstrophysical Journal, 2018
We present a systematic numerical relativity study of the mass ejection and the associated electromagnetic transients and nucleosynthesis from binary neutron star (NS) mergers.
D. Radice   +5 more
semanticscholar   +1 more source

The impact of new d(p,γ)3 rates on Big Bang Nucleosynthesis

open access: yesJournal of Cosmology and Astroparticle Physics, 2021
We consider the effect on Big Bang Nucleosynthesis (BBN) of new measurements of the d(p,γ)3 cross section by the LUNA Collaboration. These have an important effect on the primordial abundance of D/H which is also sensitive to the baryon density at the ...
Tsung-Han Yeh, K. Olive, B. Fields
semanticscholar   +1 more source

Potential Impact of Fast Flavor Oscillations on Neutrino-driven Winds and Their Nucleosynthesis [PDF]

open access: yesAstrophysical Journal, 2020
The wind driven by the intense neutrino emission from a protoneutron star (PNS) is an important site for producing nuclei heavier than the Fe group. Because of certain features in the neutrino angular distributions, the so-called fast flavor oscillations
Zewei Xiong   +3 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

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