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Spatial Distribution of Nucleosynthesis Products in Cassiopeia A: Comparison Between Observations and 3D Explosion Models
Patrick Young, Carola I. Ellinger, Francis X. Timmes +10
We examine observed heavy element abundances in the Cassiopeia A supernova remnant as a constraint on the nature of the Cas A supernova. We compare bulk abundances from 1D and 3D e…
44Ti and 56Ni in core-collapse supernovae
Georgios Magkotsios, Francis X. Timmes, Michael Wiescher +9
We investigate the physical conditions where 44Ti and 56Ni are created in core-collapse supernovae. In this preliminary work we use a series of post-processing network calculations…
Nucleosynthetic Yields from "Collapsars"
Gabriel Rockefeller, Christopher L. Fryer, Patrick Young +8
The "collapsar" engine for gamma-ray bursts invokes as its energy source the failure of a normal supernova and the formation of a black hole. Here we present the results of the fir…
Nucleosynthesis Calculations from Core-Collapse Supernovae
Christopher L. Fryer, Patrick Young, Michael Bennett +8
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 injec…
NuGrid: Toward High Precision Double-Degenerate Merger Simulations with SPH in 3D
Steven Diehl, Christopher L. Fryer, Aimee Hungerford +11
We present preliminary results from recent high-resolution double-degenerate merger simulations with the Smooth Particle Hydrodynamics (SPH) technique. We put particular emphasis o…
Difficulties in Probing Nuclear Physics: A Study of Ti and Ni
Aimee Hungerford, Christopher L. Fryer, Francis X. Timmes +8
The nucleosynthetic yield from a supernova explosion depends upon a variety of effects: progenitor evolution, explosion process, details of the nuclear network, and nuclear rates.…