R-process nucleosynthesis in supernova explosion

M. Saruwatari; M. Hashimoto; K. Kotake; S. Yamada

doi:10.1063/1.3628432

R-process nucleosynthesis in supernova explosion

M. Saruwatari, M. Hashimoto, K. Kotake, S. Yamada

Experimental Particle Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

We investigate the possibility of the r-process during the magnetohydrodynamical (MHD) explosion of supernova in a massive star of 13M _⊙ with the effects of neutrinos included. Contrary to the case of the spherical explosion, jet-like explosion due to the combined effects of rotation and magnetic field lowers the electron fraction significantly inside the layers. We find that the ejected material of low electron fraction responsible for the r-process comes out from the inner deep region of the core that is made up of iron-group nuclei. This leads to the production of the second to third peak in the solar r-process elements. We suggest that there are some variations in the r-process nucleosynthesis according to the initial conditions of rotational and magnetic fields.

Original language	English
Title of host publication	Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3
Pages	420-422
Number of pages	3
DOIs	https://doi.org/10.1063/1.3628432
Publication status	Published - 2011
Event	3rd International Conference on Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3 - Rhodes, Greece Duration: Aug 23 2010 → Aug 27 2010

Publication series

Name	AIP Conference Proceedings
Volume	1377
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	3rd International Conference on Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3
Country/Territory	Greece
City	Rhodes
Period	8/23/10 → 8/27/10

All Science Journal Classification (ASJC) codes

Ecology, Evolution, Behavior and Systematics
Ecology
Plant Science
Physics and Astronomy(all)
Nature and Landscape Conservation

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10.1063/1.3628432

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Saruwatari, M, Hashimoto, M, Kotake, K & Yamada, S 2011, R-process nucleosynthesis in supernova explosion. in Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3. AIP Conference Proceedings, vol. 1377, pp. 420-422, 3rd International Conference on Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3, Rhodes, Greece, 8/23/10. https://doi.org/10.1063/1.3628432

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abstract = "We investigate the possibility of the r-process during the magnetohydrodynamical (MHD) explosion of supernova in a massive star of 13M ⊙ with the effects of neutrinos included. Contrary to the case of the spherical explosion, jet-like explosion due to the combined effects of rotation and magnetic field lowers the electron fraction significantly inside the layers. We find that the ejected material of low electron fraction responsible for the r-process comes out from the inner deep region of the core that is made up of iron-group nuclei. This leads to the production of the second to third peak in the solar r-process elements. We suggest that there are some variations in the r-process nucleosynthesis according to the initial conditions of rotational and magnetic fields.",

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doi = "10.1063/1.3628432",

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AU - Hashimoto, M.

AU - Kotake, K.

AU - Yamada, S.

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N2 - We investigate the possibility of the r-process during the magnetohydrodynamical (MHD) explosion of supernova in a massive star of 13M ⊙ with the effects of neutrinos included. Contrary to the case of the spherical explosion, jet-like explosion due to the combined effects of rotation and magnetic field lowers the electron fraction significantly inside the layers. We find that the ejected material of low electron fraction responsible for the r-process comes out from the inner deep region of the core that is made up of iron-group nuclei. This leads to the production of the second to third peak in the solar r-process elements. We suggest that there are some variations in the r-process nucleosynthesis according to the initial conditions of rotational and magnetic fields.

AB - We investigate the possibility of the r-process during the magnetohydrodynamical (MHD) explosion of supernova in a massive star of 13M ⊙ with the effects of neutrinos included. Contrary to the case of the spherical explosion, jet-like explosion due to the combined effects of rotation and magnetic field lowers the electron fraction significantly inside the layers. We find that the ejected material of low electron fraction responsible for the r-process comes out from the inner deep region of the core that is made up of iron-group nuclei. This leads to the production of the second to third peak in the solar r-process elements. We suggest that there are some variations in the r-process nucleosynthesis according to the initial conditions of rotational and magnetic fields.

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R-process nucleosynthesis in supernova explosion

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