R-process nucleosynthesis in supernova explosion

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

Research output: Chapter in Book/Report/Conference proceedingConference 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 languageEnglish
Title of host publicationFrontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3
Pages420-422
Number of pages3
DOIs
Publication statusPublished - 2011 Nov 24
Event3rd International Conference on Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3 - Rhodes, Greece
Duration: 2010 Aug 232010 Aug 27

Publication series

NameAIP Conference Proceedings
Volume1377
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference3rd International Conference on Frontiers in Nuclear Structure, Astrophysics, and Reactions, FINUSTAR 3
CountryGreece
CityRhodes
Period10/8/2310/8/27

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Keywords

  • magneto-hydorodynamics
  • neutrino
  • r-process
  • supernovae

ASJC Scopus subject areas

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

Cite this

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 (pp. 420-422). (AIP Conference Proceedings; Vol. 1377). https://doi.org/10.1063/1.3628432