Numerical simulations of multi-scale astrophysical problems: The example of Type Ia supernovae

TL;DR

This paper discusses advanced numerical simulation techniques for modeling Type Ia supernovae, addressing multi-scale challenges across vast time and length scales to improve understanding of these astrophysical phenomena.

Contribution

It introduces a novel approach to simulating multi-scale astrophysical events, exemplified by Type Ia supernovae, overcoming significant computational challenges.

Findings

3D simulations of supernova explosions are now feasible

Simulations cover 11 orders of magnitude in length scales

Turbulent effects are crucial in explosion mechanisms

Abstract

Vastly different time and length scales are a common problem in numerical simulations of astrophysical phenomena. Here, we present an approach to numerical modeling of such objects on the example of Type Ia supernova simulations. The evolution towards the explosion proceeds on much longer time scales than the explosion process itself. The physical length scales relevant in the explosion process cover 11 orders of magnitude and turbulent effects dominate the physical mechanism. Despite these challenges, three-dimensional simulations of Type Ia supernova explosions have recently become possible and pave the way to a better understanding of these important astrophysical objects.