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
Nucleosynthesis Around Black Holes [PDF]
, 1999 Study of nucleosynthesis in accretion disks around black holes was initiated by Chakrabarti et al. (1987). In the present work we do the similar analysis using the state-of-the-art disk model, namely, Advective Accretion Disks.
Banibrata Mukhopadhyay
openalex +5 more sources
R-Process with Magnetized Nuclei at Dynamo-Explosive Supernovae and Neutron Star Mergers
Universe, 2021 Nucleosynthesis at latge magnetic induction levels relevant to core-collapse supernovae and neutron star mergers is considered. For respective magnetic fields of a strength up to ten teratesla, atomic nuclei exhibit a linear magnetic response due to the ...
Vladimir N. Kondratyev
doaj +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
Binary Neutron Star Mergers: Mass Ejection, Electromagnetic Counterparts, and Nucleosynthesis [PDF]
Astrophysical 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
Spectroscopic identification of r-process nucleosynthesis in a double neutron-star merger [PDF]
Nature, 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
Experiments probing clustering effects in explosive nucleosynthesis
Frontiers in Physics, 2023 Nuclear clustering affects the nucleosynthesis occurring in a number of astrophysical environments. Highly-clusterized nuclear states typically occur near particle thresholds and therefore can produce dramatic impacts on the nuclear reaction rates.
D. W. Bardayan
doaj +1 more source
Big bang nucleosynthesis constraints on sterile neutrino and lepton asymmetry of the Universe [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 We consider the cosmological effects of sterile neutrinos with the masses of 150–450 MeV . The decay of sterile neutrinos changes the thermal history of the Universe and affects the energy density of radiation at recombination and the big bang ...
G. Gelmini +4 more
semanticscholar +1 more source
Screening Effects in Stars and in the Laboratory
Frontiers in Physics, 2022 Nuclear reactions are the driver of the evolution of many astrophysical objects. In the astrophysical environment their respective reaction rates are, however, modified due to the presence of other charges.
Marialuisa Aliotta +2 more
doaj +1 more source
Detection of Lead in the Carbon-rich, Very Metal-poor Star LP 625-44: A Strong Constraint on [CLC][ITAL]s[/ITAL][/CLC]-Process Nucleosynthesis at Low Metallicity [PDF]
, 2000 We report the detection of the Pb I 4057.8A line in the very metal-poor ([Fe/H]=-2.7), carbon-rich star, LP625-44. We determine the abundance of Pb ([Pb/Fe] = 2.65) and 15 other neutron-capture elements.
Wako Aoki +4 more
openalex +4 more sources