Heavy-element nucleosynthesis in magnetohydrodynamical jets from collapsars

M. Ono, M. Hashimoto, S. Fujimoto, K. Kotake, S. 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 publication10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10
Pages415-417
Number of pages3
DOIs
Publication statusPublished - 2010 Sep 21
Event10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10 - Osaka, Japan
Duration: 2010 Mar 82010 Mar 10

Publication series

NameAIP Conference Proceedings
Volume1269
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10
CountryJapan
CityOsaka
Period10/3/810/3/10

Keywords

  • Nucleosynthesis
  • Supernova explosion

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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