Heavy-element 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 = 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
Volume1269
DOIs
Publication statusPublished - Sep 21 2010
Event10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10 - Osaka, Japan
Duration: Mar 8 2010Mar 10 2010

Other

Other10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10
CountryJapan
CityOsaka
Period3/8/103/10/10

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Heavy-element nucleosynthesis in magnetohydrodynamical jets from collapsars'. Together they form a unique fingerprint.

  • Cite this

    Ono, M., Hashimoto, M-A., Fujimoto, S., Kotake, K., & Yamada, S. (2010). Heavy-element nucleosynthesis in magnetohydrodynamical jets from collapsars. In 10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10 (Vol. 1269, pp. 415-417) https://doi.org/10.1063/1.3485185