2020/05/07 by Gregory S. Vance, Patrick A. Young, Christopher L. Fryer +1
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Cassiopeia A #Gamma-ray bursts and supernovae #Near-Earth supernova #Neutrino Physics Research #Star (game theory) #Supernova #Supernova remnant #Type II supernova #astro-ph.HE
paper · pdf · doi:10.3847/1538-4357/ab8ade
v1: 14 pages of text, 24 figures, 2 tables; to be published in ApJ
arxiv created 2020/05/07 · openalex publication_date 2020/05/28 · arxiv updated 2020/06/03 · openalex created_date 2020/06/05 · openalex updated_date 2026/08/05
Abstract Mixing above the proto-neutron star is believed to play an important role in the supernova engine, and this mixing results in a supernova explosion with asymmetries. Elements produced in the innermost ejecta, e.g., 56 Ni and 44 Ti, provide a clean probe of this engine. The production of 44 Ti is particularly sensitive to the exact production pathway and, by understanding the available pathways, we can use 44 Ti to probe the supernova engine. Using thermodynamic trajectories from a three-dimensional supernova explosion model, we review the production of these elements and the structures expected to form under the “convective-engine” paradigm behind supernovae. We compare our results to recent X-ray and γ -ray observations of the Cassiopeia A supernova remnant.