TY - GEN
T1 - Nucleosynthesis in jets from rotating magnetized stars during core collapse
AU - Fujimoto, Shin Ichirou
AU - Nishimura, Nobuya
AU - Hashimoto, Masa Aki
N1 - Funding Information:
This work was supported in part by the Japan Society for Grants-in-Aid for the Scientific Research from the Ministry of Education, Science and Culture of Japan (No.17540267)
Publisher Copyright:
© 2008 American Institute of Physics.
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
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U2 - 10.1063/1.2939318
DO - 10.1063/1.2939318
M3 - Conference contribution
AN - SCOPUS:85037691393
T3 - AIP Conference Proceedings
SP - 318
EP - 322
BT - Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 2007
A2 - Julin, Rauno
A2 - Demetriou, Paraskevi
A2 - Harissopulos, Sotirios V.
PB - American Institute of Physics Inc.
T2 - 2nd International Conference on Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 2007
Y2 - 10 September 2007 through 14 September 2007
ER -