Nucleosynthesis in magnetohydrodynamical jets from collapsars

Masaomi Ono, Masa-Aki 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=70M. Detailed calculations of the nucleosynthesis are performed during the 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 hydrostatic and heavy-element nucleosyntheses to compare with the solar abundances. We find that neutron-rich elements of 70<A<140 are highly overproduced relative 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. We find also that different mass formula changes significantly the production of elements of A>140.

Original languageEnglish
Title of host publicationFrontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3
Pages411-413
Number of pages3
DOIs
Publication statusPublished - Nov 24 2011
Event3rd International Conference on Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3 - Rhodes, Greece
Duration: Aug 23 2010Aug 27 2010

Publication series

NameAIP Conference Proceedings
Volume1377
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other3rd International Conference on Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3
CountryGreece
CityRhodes
Period8/23/108/27/10

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Ono, M., Hashimoto, M-A., Fujimoto, S., Kotake, K., & Yamada, S. (2011). Nucleosynthesis in magnetohydrodynamical jets from collapsars. In Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3 (pp. 411-413). (AIP Conference Proceedings; Vol. 1377). https://doi.org/10.1063/1.3628429