Novel techniques for constraining neutron-capture rates relevant for r-process heavy-element nucleosynthesis

AC Larsen, A Spyrou, SN Liddick… - Progress in Particle and …, 2019 - Elsevier
The rapid-neutron capture process (r process) is identified as the producer of about 50% of
elements heavier than iron. This process requires an astrophysical environment with an …

Neutron star mergers might not be the only source of r-process elements in the Milky Way

B Côté, M Eichler, A Arcones, CJ Hansen… - The Astrophysical …, 2019 - iopscience.iop.org
Probing the origin of r-process elements in the universe represents a multidisciplinary
challenge. We review the observational evidence that probes the properties of r-process …

Nuclear reactions in astrophysics: a review of useful probes for extracting reaction rates

FM Nunes, G Potel, T Poxon-Pearson… - Annual Review of …, 2020 - annualreviews.org
Astrophysical simulations require knowledge of a wide array of reaction rates. For a number
of reasons, many of these reaction rates cannot be measured directly and instead are …

Impact of systematic nuclear uncertainties on composition and decay heat of dynamical and disc ejecta in compact binary mergers

I Kullmann, S Goriely, O Just… - Monthly Notices of the …, 2023 - academic.oup.com
Theoretically predicted yields of elements created by the rapid neutron capture (r-) process
carry potentially large uncertainties associated with incomplete knowledge of nuclear …

The i-process yields of rapidly accreting white dwarfs from multicycle He-shell flash stellar evolution models with mixing parametrizations from 3D hydrodynamics …

PA Denissenkov, F Herwig, P Woodward… - Monthly Notices of …, 2019 - academic.oup.com
We have modelled the multicycle evolution of rapidly accreting CO white dwarfs (RAWDs)
with stable H burning intermittent with strong He-shell flashes on their surfaces for 0.7≤ M …

Learning about the intermediate neutron-capture process from lead abundances

M Hampel, AI Karakas, RJ Stancliffe… - The Astrophysical …, 2019 - iopscience.iop.org
Lead (Pb) is predominantly produced by the slow neutron-capture process (s process) in
asymptotic giant branch (AGB) stars. In contrast to significantly enhanced Pb abundances …

Remnants and ejecta of thermonuclear electron-capture supernovae-Constraining oxygen-neon deflagrations in high-density white dwarfs

S Jones, FK Röpke, C Fryer, AJ Ruiter… - Astronomy & …, 2019 - aanda.org
The explosion mechanism of electron-capture supernovae (ECSNe) remains equivocal: it is
not completely clear whether these events are implosions in which neutron stars are formed …

The intermediate neutron capture process-IV. Impact of nuclear model and parameter uncertainties

S Martinet, A Choplin, S Goriely, L Siess - Astronomy & astrophysics, 2024 - aanda.org
Context. The observed surface abundance distributions of carbon-enhanced metal-poor
(CEMP) r/s stars suggest that these stars could have been polluted by an intermediate …

Coproduction of light and heavy r-process elements via fission deposition

N Vassh, MR Mumpower, GC McLaughlin… - The Astrophysical …, 2020 - iopscience.iop.org
We apply for the first time fission yields determined across the chart of nuclides from the
macroscopic-microscopic theory of the Finite Range Liquid Drop Model to simulations of …

Nuclear Uncertainties Associated with the Nucleosynthesis in Ejecta of a Black Hole Accretion Disk

MR Mumpower, TM Sprouse, JM Miller… - The Astrophysical …, 2024 - iopscience.iop.org
The simulation of heavy element nucleosynthesis requires input from yet-to-be-measured
nuclear properties. The uncertainty in the values of these off-stability nuclear properties …