Nucleosynthesis inside an Accretion Disk in a Collapsar
| Autor: | Ryuichi Matsuba, Masa-aki Hashimoto, Shin-ichirou Fujimoto, Koji Arai |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Physics
Nuclear and High Energy Physics Advection Astrophysics::High Energy Astrophysical Phenomena Central object Astronomy Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Accretion rate Intermediate polar Accretion disc Thin disk Nucleosynthesis Thick disk Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Astrophysics::Galaxy Astrophysics |
| Zdroj: | Nuclear Physics A. 758:39-42 |
| ISSN: | 0375-9474 |
| DOI: | 10.1016/j.nuclphysa.2005.05.012 |
| Popis: | We investigate nucleosynthesis inside an accretion disk formed during a collapse of a massive star. The mass accretion rate and the mass of a central object vary with time according to a fall-back scenario. The disk is confirmed to be dominated by advection. A considerable amount of Fe-group elements is produced inside the disk through a sequence of ( α , γ ) reactions, and the processed material is ejected via outflows. The collapsar accretion disk is an promising site for production of heavy elements. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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