Turbulence and nuclear reactions in 3D hydrodynamics simulations of massive stars

Rizzuti, Federico; Hirschi, Raphael; Georgy, Cyril; Arnett, David; Meakin, Casey; Murphy, Alexander

Abstract

Our knowledge of massive star evolution and nucleosynthesis is limited by uncertainties related to multi-dimensional processes taking place in stellar interiors. Recently, theoretical works have started to improve 1D stellar evolution codes through the implementation of results from 3D hydrodynamics models, which are used to study multi-D processes on a short time range (minutes or hours) and improve 1D prescriptions. In these proceedings, we present results coming from a new set of high-resolution hydrodynamics simulations of the neon-burning shell in a massive star, employing the PROMPI code. We focus in particular on the interplay between turbulence and nuclear reactions, discussing the impact that different boosting factors of the nuclear rates have on the results. This has important implications for supernova studies, nucleosynthesis, the physics of neutron stars and black holes.

Citation

Rizzuti, F., Hirschi, R., Georgy, C., Arnett, D., Meakin, C., & Murphy, A. (2023). Turbulence and nuclear reactions in 3D hydrodynamics simulations of massive stars. EPJ Web of Conferences, 279, 05001. https://doi.org/10.1051/epjconf/202327905001

• Journal Article Type: Article
• Acceptance Date: Mar 22, 2023
• Online Publication Date: Mar 22, 2023
• Publication Date: 2023
• Deposit Date: Sep 12, 2023
• Journal: EPJ Web of Conferences
• Print ISSN: 2100-014X
• Publisher: Società Italiana di Fisica
• Peer Reviewed: Peer Reviewed
• Volume: 279
• Pages: 05001
• DOI: https://doi.org/10.1051/epjconf/202327905001
• Keywords: General Earth and Planetary Sciences; General Engineering; General Environmental Science