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

T Rauscher, Naomi Nishimura, Raphael Hirschi, Gabriele Cescutti, A. St. J. Murphy, Alexander Heger

Research output: Contribution to conferencePoster


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.
Original languageEnglish
Number of pages4
Publication statusPublished - 2017
EventInternational Symposium on Nuclei in the Cosmos 2016 - Toki Messe, Niigata, Japan
Duration: 19 Jun 201624 Jun 2016
Conference number: 14th


ConferenceInternational Symposium on Nuclei in the Cosmos 2016
Abbreviated titleNIC2016
Internet address

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