Abundance Uncertainties Obtained With the PIZBUIN Framework For Monte Carlo Reaction Rate Variations

Rauscher, T. and Nishimura, N. and Cescutti, G. and Hirschi, R. and Murphy, A. St. J.. (2018) Abundance Uncertainties Obtained With the PIZBUIN Framework For Monte Carlo Reaction Rate Variations. AIP Conference Proceedings, 1947. 020015.

Full text not available from this repository.

Official URL: https://edoc.unibas.ch/65116/

Downloads: Statistics Overview


Uncertainties in nucleosynthesis models originating from uncertainties in astrophysical reaction rates were estimated in a Monte Carlo variation procedure. Thousands of rates were simultaneously varied within individual, temperature-dependent errors to calculate their combined effect on final abundances. After a presentation of the method, results from application to three different nucleosynthesis processes are shown: the gamma-process and the s-process in massive stars, and the main s-process in AGB stars (preliminary results). Thermal excitation of nuclei in the stellar plasma and the combined action of several reactions increase the final uncertainties above the level of the experimental errors. The total uncertainty, on the other hand, remains within a factor of two even in processes involving a large number of unmeasured rates, with some notable exceptions for nuclides whose production is spread over several stellar layers and for s-process branchings.
Faculties and Departments:05 Faculty of Science > Departement Physik > Former Organization Units Physics > Theoretische Physik Astrophysik (Thielemann)
UniBasel Contributors:Rauscher, Thomas
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:AIP Publishing
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:13 Aug 2018 13:07
Deposited On:13 Aug 2018 13:07

Repository Staff Only: item control page