Sensitivity of Simulations of Double-detonation Type Ia Supernovae to Integration Methodology

Journal Article · 02 May 2024 · The Astrophysical Journal

DOI: https://doi.org/10.3847/1538-4357/ad3441 · OSTI ID:2345231

Zingale, Michael ; Chen, Zhi ; Rasmussen, Melissa ; Polin, Abigail ; Katz, Max ; Smith Clark, Alexander ; Johnson, Eric T.

Abstract We study the coupling of hydrodynamics and reactions in simulations of the double-detonation model for Type Ia supernovae. When assessing the convergence of simulations, the focus is usually on spatial resolution; however, the method of coupling the physics together as well as the tolerances used in integrating a reaction network also play an important role. In this paper, we explore how the choices made in both coupling and integrating the reaction portion of a simulation (operator/Strang splitting versus the simplified spectral deferred corrections method we introduced previously) influences the accuracy, efficiency, and nucleosynthesis of simulations of double detonations. We find no need to limit reaction rates or reduce the simulation time step to the reaction timescale. The entire simulation methodology used here is GPU-accelerated and made freely available as part of the Castro simulation code.

• Sponsoring Organization: USDOE
• Grant/Contract Number: FG02-87ER40317
• OSTI ID: 2345231
• Journal Information: The Astrophysical Journal, Journal Name: The Astrophysical Journal Journal Issue: 2 Vol. 966; ISSN 0004-637X
• Publisher: American Astronomical SocietyCopyright Statement
• Country of Publication: United States
• Language: English