Large-Scale Mixing in a Violent Oxygen-Neon Shell Merger Prior to a Core-Collapse Supernova

Naveen Yadav, Bernhard Müller, Hans Thomas Janka +2

We present a seven-minute long $4\pi$-3D simulation of a shell merger event in a non-rotating $18.88M_{\odot }$ supernova progenitor before the onset of gravitational collapse. The k…