Nucleosynthesis inside an accretion disk in a collapsar

K. Arai; R. Matsuba; S. Fujimoto; M. Hashimoto

doi:10.1016/j.nuclphysa.2005.05.012

Nucleosynthesis inside an accretion disk in a collapsar

K. Arai, R. Matsuba, S. Fujimoto, M. Hashimoto

Experimental Particle Physics

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	39-42
Number of pages	4
Journal	Nuclear Physics A
Volume	758
Issue number	1-4 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.nuclphysa.2005.05.012
Publication status	Published - Jul 25 2005

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/j.nuclphysa.2005.05.012

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AU - Matsuba, R.

AU - Fujimoto, S.

AU - Hashimoto, M.

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AB - 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.

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JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 1-4 SPEC. ISS.

ER -

Nucleosynthesis inside an accretion disk in a collapsar

Abstract

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