Nucleosynthesis calculations from core-collapse supernovae

Christopher L. Fryer, Patrick Young, Michael Bennet, Steven Diehl, Falk Herwig, Raphael Hirschi, Aimee Hungerford, Marco Pignatari, Georgios Magkotsios, Gabriel Rockefeller, Francis Timmes

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish (US)
Title of host publicationProceedings of Science
StatePublished - 2008
Event10th Symposium on Nuclei in the Cosmos, NIC 2008 - Mackinac Island, MI, United States
Duration: Jul 27 2008Aug 1 2008

Other

Other10th Symposium on Nuclei in the Cosmos, NIC 2008
CountryUnited States
CityMackinac Island, MI
Period7/27/088/1/08

Fingerprint

nuclear fusion
supernovae
explosions
pistons
injection
opacity
neutrinos
entropy
heavy elements
engines
energy
convection
augmentation
simulation

ASJC Scopus subject areas

  • General

Cite this

Fryer, C. L., Young, P., Bennet, M., Diehl, S., Herwig, F., Hirschi, R., ... Timmes, F. (2008). Nucleosynthesis calculations from core-collapse supernovae. In Proceedings of Science

Nucleosynthesis calculations from core-collapse supernovae. / Fryer, Christopher L.; Young, Patrick; Bennet, Michael; Diehl, Steven; Herwig, Falk; Hirschi, Raphael; Hungerford, Aimee; Pignatari, Marco; Magkotsios, Georgios; Rockefeller, Gabriel; Timmes, Francis.

Proceedings of Science. 2008.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Fryer, CL, Young, P, Bennet, M, Diehl, S, Herwig, F, Hirschi, R, Hungerford, A, Pignatari, M, Magkotsios, G, Rockefeller, G & Timmes, F 2008, Nucleosynthesis calculations from core-collapse supernovae. in Proceedings of Science. 10th Symposium on Nuclei in the Cosmos, NIC 2008, Mackinac Island, MI, United States, 7/27/08.
Fryer CL, Young P, Bennet M, Diehl S, Herwig F, Hirschi R et al. Nucleosynthesis calculations from core-collapse supernovae. In Proceedings of Science. 2008
Fryer, Christopher L. ; Young, Patrick ; Bennet, Michael ; Diehl, Steven ; Herwig, Falk ; Hirschi, Raphael ; Hungerford, Aimee ; Pignatari, Marco ; Magkotsios, Georgios ; Rockefeller, Gabriel ; Timmes, Francis. / Nucleosynthesis calculations from core-collapse supernovae. Proceedings of Science. 2008.
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AU - Bennet, Michael

AU - Diehl, Steven

AU - Herwig, Falk

AU - Hirschi, Raphael

AU - Hungerford, Aimee

AU - Pignatari, Marco

AU - Magkotsios, Georgios

AU - Rockefeller, Gabriel

AU - Timmes, Francis

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