Production of 44Ti in neutrino-driven aspherical supernova explosions

Shin Ichiro Fujimoto, Masaomi Ono, Masa Aki Hashimoto, Kei Kotake

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

抄録

We examine the synthesis of 44Ti in a neutrino-driven aspherical supernova (SN), focusing on reaction rates related to 44Ti and rotation of a progenitor. We have performed 2D hydrodynamic simulations of SN of a 15M progenitor, whose angular velocity is manually set to be a cylindrical distribution and have followed explosive nucleosynthesis in the ejecta. We find that the faster rates of 40Ca(α,γ)44Ti and the slower rate of 44Ti(α,p)47V lead to more massive ejection of 44Ti and 56Ni and larger ratios <44Ti/ 56Ni>. Faster rotation also results in more massive ejection of 44Ti and 56Ni. Ratios <44Ti/56Ni> are however independent from rotation. Large masses of 44Ti and large ratios <Ti/56Ni> observed in SN 1987A and Cas A (> 1O-4M and 1-2 respectively) are not realized in all the models.

本文言語英語
ホスト出版物のタイトルOrigin of Matter and Evolution of Galaxies 2013 - Proceedings of the 12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013
出版社American Institute of Physics Inc.
ページ296-300
ページ数5
ISBN(印刷版)9780735412286
DOI
出版ステータス出版済み - 1月 1 2014
イベント12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013 - Tsukuba, 日本
継続期間: 11月 18 201311月 21 2013

出版物シリーズ

名前AIP Conference Proceedings
1594
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

その他

その他12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013
国/地域日本
CityTsukuba
Period11/18/1311/21/13

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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