Results 31 to 40 of about 66,893 (303)
Nucleosynthesis in multinucleon transfer reactions
European 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
Neutrino nucleosynthesis [PDF]
Physics Letters B, 2005 We study neutrino process nucleosynthesis in massive stars using newly calculated cross sections, an expanded reaction network, and complete and self-consistent models of the progenitor star. We reevaluate the production of light isotopes from abundant progenitors as well as that of rare, heavy, proton-rich isotopes.
Heger, A. +5 more
openaire +4 more sources
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
An extended analysis of Heavy Neutral Leptons during Big Bang Nucleosynthesis [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 Heavy Neutral Leptons (HNLs) are strongly motivated by theory due to their capability of simultaneously explaining the observed phenomena of dark matter, neutrino oscillations and the baryon asymmetry of the Universe.
N. Sabti, Andrii Magalich, A. Filimonova
semanticscholar +1 more source
Hypernovae and their nucleosynthesis [PDF]
Symposium - International Astronomical Union, 2003 We review the characteristics of nucleosynthesis in ‘hypernovae’, i.e., core-collapse supernovae with very large explosion energies (≳ 1052 ergs). The hypernova yields show the following characteristics: (i) the mass ratio between the complete and incomplete Si burning regions is larger in hypernovae than normal supernovae.
Ken'ichi Nomoto +5 more
openaire +3 more sources
Light curves of the neutron star merger GW170817/SSS17a: Implications for r-process nucleosynthesis [PDF]
Science, 2017 Photons from a gravitational wave event Two neutron stars merging together generate a gravitational wave signal and have also been predicted to emit electromagnetic radiation. When the gravitational wave event GW170817 was detected, astronomers rushed to
M. Drout +54 more
semanticscholar +1 more source
Big-Bang Nucleosynthesis after Planck [PDF]
Journal of Cosmology and Astroparticle Physics, 2019 We assess the status of big-bang nucleosynthesis (BBN) in light of the final Planck data release and other recent developments, and in anticipation of future measurements.
B. Fields +3 more
semanticscholar +1 more source
Improved big bang nucleosynthesis constraints on heavy neutral leptons
Physical Review D, 2021 We constrain the lifetime of thermally produced heavy neutral leptons (HNLs) from big bang nucleosynthesis. We show that even a small fraction of mesons present in the primeval plasma leads to the overproduction of primordial helium-4.
A. Boyarsky +3 more
semanticscholar +1 more source
Numerical Relativity Simulations of the Neutron Star Merger GW170817: Long-term Remnant Evolutions, Winds, Remnant Disks, and Nucleosynthesis [PDF]
, 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
Potential Impact of Fast Flavor Oscillations on Neutrino-driven Winds and Their Nucleosynthesis [PDF]
Astrophysical 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