Fryer, CL and Young, P and Bennett, M and Diehl, S and Herwig, F and Hirschi, R and Hungerford, A and Pignatari, M and Magkotsios, G and Rockefeller, G and Timmes, FX (2008) Nucleosynthesis Calculations from Core-Collapse Supernovae. In: 10th Symposium on Nuclei in the Cosmos, 27 Jul - 1 Aug 2008, Mackinac Island, Michigan, USA.

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Abstract

We review some of the uncertainties in calculating nucleosynthetic yields, focusing on the explosion mechanism. Current yield calculations tend to either use a piston, energy injection, or enhancement of neutrino opacities to drive an explosion. We show that the energy injection, or more accurately, an entropy injection mechanism is best-suited to mimic our current understanding of the convection-enhanced supernova engine. The enhanced neutrino-opacity technique is in qualitative disagreement with simulations of core-collapse supernovae and will likely produce errors in the yields. But piston-driven explosions are the most discrepant. Piston-driven explosion severely underestimate the amount of fallback, leading to order-of-magnitude errors in the yields of heavy elements. To obtain yields accurate to the factor of a few level, we must use entropy or energy injection and this has become the NuGrid collaboration approach.

Item Type: Conference or Workshop Item (Paper)
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Faculty of Natural Sciences > School of Physical and Geographical Sciences
Related URLs:
Depositing User: Symplectic
Date Deposited: 15 Jul 2015 14:22
Last Modified: 15 Jul 2015 14:22
URI: http://eprints.keele.ac.uk/id/eprint/734

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