R-process in supernovae and Gamma-ray bursts

T. Kajino, S. Harikae, T. Yoshida, K. Nakamura, W. Aoki

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

We study r-process nucleosynthesis in neutrino-driven winds of Type II supernovae (SNe), binary neutron-star mergers, and magneto-hydrodynamic jets in view of recent astronomical observations of r-process elements in metal-deficient stars and new nuclear reaction data. Universality in observed abundance pattern and total ejected yields of the r-elements from single episode of each candidate site are used to identify the astrophysical site of the r-process. Neutrinos play the critical roles in light element synthesis as well as r-process. Elemental abundances are affected strongly by neutrino oscillations (MSW effect) through the SN ν-process nucleosynthesis. We find that unknown neutrino oscillation parameters, i.e. mass hierarchy and mixing angle θ13, are simultaneously constrained by the Li/B ratio from SN nucleosynthesis. Gamma ray burst (GRB) nucleosynthesis in contrast is expected to be relatively free from thermal neutrino effects because of black hole (BH) formation insteard of neutron star. We find that the abundance pattern is totally different from ordinary SN nucleosynthesis.

本文言語English
ホスト出版物のタイトルAIP Conference Proceedings
ページ341-348
ページ数8
1235
DOI
出版ステータスPublished - 2010
外部発表はい
イベント7th Japan-China Joint Nuclear Physics Symposium - Tsukuba
継続期間: 2009 11 92009 11 13

Other

Other7th Japan-China Joint Nuclear Physics Symposium
CityTsukuba
Period09/11/909/11/13

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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