15–20 Sept 2024
TU Dresden, Germany; Barkhausen-Bau, Schönfeld-Hörsaal (BAR/SCHÖ/E)
Europe/Berlin timezone
Thank you for your Contributions to NPA-XI! - Conference Photos now available.

Nuclear Model and Parameter Uncertainties on Nucleosynthesis: Insights into the i-Process in Early AGB Stars and r-Process in Neutron Star Mergers

17 Sept 2024, 16:15
25m
Schönfeld-Hörsaal BAR/SCHÖ/E (TU Dresden, Germany; Barkhausen-Bau, Schönfeld-Hörsaal (BAR/SCHÖ/E))

Schönfeld-Hörsaal BAR/SCHÖ/E

TU Dresden, Germany; Barkhausen-Bau, Schönfeld-Hörsaal (BAR/SCHÖ/E)

Helmholtzstraße 18 01069 Dresden Germany
Invited talk Plenary Session

Speaker

Sébastien Martinet (Université Libre de Bruxelles)

Description

Using a consistent statistical approach through the Backward-Forward Monte-Carlo method, we investigate both the parameter (statistic) and model (systematic) uncertainties associated with theoretical nuclear reaction rates of relevance during the i-process, and with theoretical nuclear masses of relevance during the r-process.

  • For the i-process, we explore the impact on the i-process elemental production, and subsequently on the surface enrichment, for low-mass low-metallicity stars during the early AGB phase.
  • For the r-process, we show the impact on the r-process production during Neutron Star Merger events.

These studies allow us to quantify the relative importance of parameters versus model uncertainties with respect to the surface abundances in AGB stars and to the r-process production during Neutron Star mergers.

We identify and provide a list of important reaction rates that would need to be better constrained in the future in order to improve our understanding of the i-process. We identify similarly important nuclear masses in the r-process production.

Primary author

Sébastien Martinet (Université Libre de Bruxelles)

Co-authors

Stephane Goriely (Université Libre de Bruxelles) Arthur CHOPLIN (Université Libre de Bruxelles) Lionel Siess (Université Libre de Bruxelles)

Presentation materials