Explosive Nucleosynthesis from GRB and Hypernova Progenitors: Direct Collapse versus Fallback
| dc.creator | Fryer, Christopher L. | |
| dc.creator | Young, Patrick A. | |
| dc.creator | Hungerford, Aimee L. | |
| dc.date | 2006-04-21 | |
| dc.date.accessioned | 2026-07-07T10:43:53Z | |
| dc.date.available | 2026-07-07T10:43:53Z | |
| dc.description | The collapsar engine behind long-duration gamma-ray bursts extracts the energy released from the rapid accretion of a collapsing star onto a stellar-massed black hole. In a collapsing star, this black hole can form in two ways: the direct collapse of the stellar core into a black hole and the delayed collapse of a black hole caused by fallback in a weak supernova explosion. In the case of a delayed-collapse black hole, the strong collapsar-driven explosion overtakes the weak supernova explosion before shock breakout, and it is very difficult to distinguish this black hole formation scenario from the direct collapse scenario. However, the delayed-collapse mechanism, with its double explosion, produces explosive nucleosynthetic yields that are very different from the direct collapse scenario. We present 1-dimensional studies of the nucleosynthetic yields from both black hole formation scenarios, deriving differences and trends in their nucleosynthetic yields. | |
| dc.description | 47 pages, submitted to ApJ | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0604471 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0604471 | |
| dc.identifier | Astrophys.J.650:1028-1047,2006 | |
| dc.identifier | doi:10.1086/506250 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/182403 | |
| dc.subject | Astrophysics | |
| dc.title | Explosive Nucleosynthesis from GRB and Hypernova Progenitors: Direct Collapse versus Fallback | |
| dc.type | text |