Abstract

Contributed Talk - Splinter MassiveStars   (MW-1050)

3D Simulations of a Core-Collapse Progenitor with Varied Resolution

Katlego Ramalatswa
Max Planck Institute for Astrophysics

We present a resolution study for a self-consistent 315 second long 4π-3D simulations of a non-rotating 12.20 M⊙ progenitor before the onset of core-collapse. The resolution tests are designed to have three variations (256, 512, and 1024 zones) in the radial direction and two variations (1 degree and 2 degree) in the non-radial direction. The aim is to use the 4π geometry to investigate the effect of radial, angular, and a combination of both resolutions on the convective-reactive properties of the progenitor. We find that within our resolution test limits, the progenitors with different resolutions have different states in the intermediate phase and similar states at collapse. We find that models with an angular resolution of 1 degree can better resolve small-scale structures with ℓ-modes (30 > ℓ > 100), while the ability to resolve such small structures can be dumped by a lower radial resolution of 256 zones.