Nucleosynthesis in jets from rotating magnetized stars during core collapse

Shin Ichirou Fujimoto, Nobuya Nishimura, Masa Aki Hashimoto

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

Abstract

We inves tigate nucleosynthesis inside magnetically driven jets ejected from rotating, magnetized massive stars, or collapsars, based on long-Term, magnetohydrodynamic simulations of the core collapse of six collapsars with the various distributions of magnetic fields and angular momentum before the collapse. We follow the evolution of the abundances of about 4000 nuclides from the collapse phase to the ejection phase and through the jet generation phase using a large nuclear reaction network. We find that the r-process successfully operates in the jets from three collapsars, so that U and Th are synthesized abundantly, even when the collapsar have a relatively small magnetic field (1010 G) and a moderately rotating core before the collapse. The abundance patterns inside the jets are similar to that of the r-elements in the solar system.

Original languageEnglish
Title of host publicationFrontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 2007
EditorsRauno Julin, Paraskevi Demetriou, Sotirios V. Harissopulos
PublisherAmerican Institute of Physics Inc.
Pages318-322
Number of pages5
ISBN (Electronic)9780735405325
DOIs
Publication statusPublished - 2008
Event2nd International Conference on Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 2007 - Aghios Nikolaos, Crete, Greece
Duration: Sep 10 2007Sep 14 2007

Publication series

NameAIP Conference Proceedings
Volume1012
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other2nd International Conference on Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 2007
Country/TerritoryGreece
CityAghios Nikolaos, Crete
Period9/10/079/14/07

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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