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Production Uncertainties of p-Nuclei in the γ-Process in Massive Stars Using a Monte Carlo Approach

Rauscher, T. and Nishimura, N. and Hirschi, R. and Cescutti, G. and Murphy, A. S. J. and Heger, A.. (2017) Production Uncertainties of p-Nuclei in the γ-Process in Massive Stars Using a Monte Carlo Approach. In: Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016), 14. 010509.

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Abstract

Proton-rich nuclei, the so-called p-nuclei, are made in photodisintegration processes in outer shells of massive stars in the course of the final supernova explosion. Nuclear uncertainties in the production of these nuclei have been quantified in a Monte Carlo procedure. Bespoke temperature-dependent uncertainties were assigned to different types of reactions involving nuclei from Fe to Bi and all rates were varied randomly within the uncertainties. The resulting total production uncertainties of the p-nuclei are below a factor of two, with few exceptions. Key reactions dominating the final uncertainties have been identified in an automated procedure using correlations between rate and abundance uncertainties. Our results are compared to those of a previous study manually varying reaction rates.
Faculties and Departments:05 Faculty of Science > Departement Physik > Former Organization Units Physics > Theoretische Physik Astrophysik (Thielemann)
UniBasel Contributors:Rauscher, Thomas
Item Type:Conference or Workshop Item, refereed
Conference or workshop item Subtype:Conference Paper
Publisher:Japanese Physical Society
Series Name:JPS Conference Proceedings
Note:Publication type according to Uni Basel Research Database: Conference paper
Language:English
Identification Number:
Last Modified:12 Mar 2018 11:15
Deposited On:12 Mar 2018 10:39

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