Heavy-element nucleosynthesis in magnetohydrodynamical jets from collapsars

M. Ono, M. Hashimoto, S. Fujimoto, K. Kotake, Shoichi Yamada

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    We investigate the heavy-element nucleosynthesis of a massive star whose mass in the main sequence stage is Mms = 70 M⊙. Numerical calculations of the nucleosynthesis are performed during the stage of hydrostatic stellar evolution until the core composed of iron-group nuclei begins to collapse. As a supernova explosion model, a collapsar model is constructed whose jets are driven by magnetohydrodynamical effects of a differentially rotating core. The heavy-element nucleosynthesis inside the jet of a collapsar model is followed along the trajectories of stream lines of the jet.We combine the results of both detailed hydrostatic and heavy-element nucleosyntheses to compare with the solar abundances. We find that neutron-rich elements of 70 < A < 160 are highly overproduced to the solar abundances. Therefore, we conclude that this scenario should be rare and elements of A ≲ 70 are compensated for other supernova explosion models.

    Original languageEnglish
    Title of host publicationAIP Conference Proceedings
    Pages415-417
    Number of pages3
    Volume1269
    DOIs
    Publication statusPublished - 2010
    Event10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10 - Osaka
    Duration: 2010 Mar 82010 Mar 10

    Other

    Other10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10
    CityOsaka
    Period10/3/810/3/10

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    Keywords

    • Nucleosynthesis
    • Supernova explosion

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Ono, M., Hashimoto, M., Fujimoto, S., Kotake, K., & Yamada, S. (2010). Heavy-element nucleosynthesis in magnetohydrodynamical jets from collapsars. In AIP Conference Proceedings (Vol. 1269, pp. 415-417) https://doi.org/10.1063/1.3485185