The Multi-Dimensional Character of Core-Collapse Supernova Nucleosynthesis
ORAL
Abstract
Observations of supernovae and their remnants reveal highly aspherical distributions of the newly-formed elements that are the dying stars' contributions to the interstellar medium. Modern simulations of the supernova's neutrino-powered central engine reveal that these inhomogeneities originate in the first seconds of the explosions and grow as the supernova ejecta propogates through the outer layers of the star. We will highlight recent simulations, combining high fidelity treatments of the neutrino field that drives the explosion, the multi-dimensional fluid flow that taps this energy source and the thermonuclear kinetics responsible for the composition of the ejecta, revealing the multi-dimensional character of core-collapse supernova ejecta and the limitations of our largley spherically-symmetric understanding.
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Publication: 1) A. Sieverding, P. G. Waldrop, J. A. Harris, W. R. Hix, E. J. Lentz, S. W. Bruenn & O. E. B. Messer (2023), Tracer Particles for Core-collapse Supernova Nucleosynthesis: The Advantages of Moving Backward, ApJ, 950 34.<br>2) M. A. Sandoval, W. R. Hix, O. E. B. Messer, E. J. Lentz & J. A. Harris (2021), Three-dimensional Core- collapse Supernova Simulations with 160 Isotopic Species Evolved to Shock Breakout, ApJ, 921 113.
Presenters
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William R Hix
Oak Ridge National Lab
Authors
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William R Hix
Oak Ridge National Lab