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Nucleosynthetic Yields from "Collapsars"
Abstract
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.
Citation
(2008, July). Nucleosynthetic Yields from "Collapsars". Presented at 10th Symposium on Nuclei in the Cosmos, Mackinac Island, Michigan, USA
Conference Name | 10th Symposium on Nuclei in the Cosmos |
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Conference Location | Mackinac Island, Michigan, USA |
Start Date | Jul 27, 2008 |
End Date | Aug 1, 2008 |
Publication Date | Nov 28, 2008 |
Publisher URL | http://arxiv.org/abs/0811.4650v1 |
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