Rockefeller, G and 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 Timmes, FX (2008) Nucleosynthetic Yields from "Collapsars". In: 10th Symposium on Nuclei in the Cosmos, 27 Jul - 1 Aug 2008, Mackinac Island, Michigan, USA.
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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 first three-dimensional simulation of the collapse of a massive star down to a black hole, including the subsequent accretion and explosion. The explosion differs significantly from the axisymmetric scenario obtained in two-dimensional simulations; this has important consequences for the nucleosynthetic yields. We compare the nucleosynthetic yields to those of hypernovae. Calculating yields from three-dimensional explosions requires new strategies in post-process nucleosynthesis; we discuss NuGrid's plan for three-dimensional yields.
|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|
|Date Deposited:||15 Jul 2015 14:08|
|Last Modified:||15 Jul 2015 14:08|
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