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

Fingerprint

heavy elements
nuclear fusion
hydrostatics
supernovae
explosions
stellar evolution
massive stars
trajectories
iron
neutrons
nuclei

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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

Heavy-element nucleosynthesis in magnetohydrodynamical jets from collapsars. / Ono, Masaomi; Hashimoto, Masa-Aki; Fujimoto, S.; Kotake, K.; Yamada, S.

10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10. Vol. 1269 2010. p. 415-417.

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

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, 10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10, Osaka, Japan, 3/8/10. https://doi.org/10.1063/1.3485185
Ono M, Hashimoto M-A, Fujimoto S, Kotake K, Yamada S. Heavy-element nucleosynthesis in magnetohydrodynamical jets from collapsars. In 10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10. Vol. 1269. 2010. p. 415-417 https://doi.org/10.1063/1.3485185
Ono, Masaomi ; Hashimoto, Masa-Aki ; Fujimoto, S. ; Kotake, K. ; Yamada, S. / Heavy-element nucleosynthesis in magnetohydrodynamical jets from collapsars. 10th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG10. Vol. 1269 2010. pp. 415-417
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