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

T. Rauscher, N. Nishimura, R. Hirschi, G. Cescutti, A. St J. Murphy, A. Heger

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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
Title of host publicationJPS Conference Proceedings
Subtitle of host publicationProceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016)
Place of PublicationNiigata, Japan
Number of pages4
ISBN (Electronic)978-4-89027-118-4
Publication statusPublished - 28 Feb 2017

Publication series

NameJPS Conference Proceedings
PublisherThe Physical Society of Japan


  • astro-ph.HE
  • astro-ph.SR
  • nucl-ex
  • nucl-th


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