Nucleosynthesis in magnetohydrodynamical jets from collapsars

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

*この研究の対応する著者

研究成果: Conference contribution

抄録

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.

本文言語English
ホスト出版物のタイトルFrontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3
ページ411-413
ページ数3
DOI
出版ステータスPublished - 2011
イベント3rd International Conference on Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3 - Rhodes, Greece
継続期間: 2010 8 232010 8 27

出版物シリーズ

名前AIP Conference Proceedings
1377
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

Conference

Conference3rd International Conference on Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3
国/地域Greece
CityRhodes
Period10/8/2310/8/27

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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