Multidimensional simulations of core-collapse supernovae and implications for nucleosynthesis

W. Raphael Hix, J. Austin Harris, Eric J. Lentz, Stephen Bruenn, Austin Chertkow, O. E.Bronson Messer, Anthony Mezzacappa, John Blondin, Eirik Endeve, Pedro Marronetti, Konstantin N. Yakunin

Research output: Contribution to journalConference articlepeer-review

Abstract

Core-collapse supernovae (CCSNe), the culmination of massive stellar evolution, are the principle actors in the story of our elemental origins. Our understanding of these events, while still incomplete, centers around a neutrino-driven central engine which is highly hydrodynamically-unstable. Simulations of increasing sophistication show a shock that stalls for hundreds of milliseconds before reviving. Though brought back to life by neutrino heating, the development of the supernova explosion is inextricably linked to three dimensional fluid flows. Regrettably, much of our understanding of the nucleosynthesis that occurs in these explosions, and their impact on galactic chemical evolution, is based on spherically symmetric simulations with parameterized explosions, ignoring much that has been learned about the central engine of these supernovae over the past two decades. Here we discuss recent results from two-dimensional CCSN simulations using our CHIMERA code, as well as ongoing three-dimensional simulations, and discuss how the multidimensional character of the explosions directly impacts the nucleosynthesis and other observables of core-collapse supernovae.

Original languageEnglish
Article number019
JournalProceedings of Science
Volume07-11-July-2015
StatePublished - 2014
Event13th Nuclei in the Cosmos, NIC 2014 - Debrecen, Hungary
Duration: Jul 7 2014Jul 11 2014

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