Three-dimensional simulation of a rotating supernova

K. Nakamura, T. Kuroda, T. Takiwaki, K. Kotake

    研究成果: Conference contribution

    抄録

    We investigate the effects of rotation on the evolution of core-collapse supernova explosion using a 15 solar mass progenitor model with a variety of neutrino luminosity and rotational velocity. Stars should have some amount of angular momentum, which would affect stellar evolution and its final explosion. In this paper we focus on the effect of rotation on gravitational collapse of a core, on a core bounce of accreting matter, and on subsequent generation and evolution of a shock wave. We find that the rotation plays a positive role for supernova explosions. More rapidly rotating models present more rapid expansion of the shock front and more energetic explosions. When the rotational speed is moderate, the shock once stalls at about 200 km away from the center similarly to a non-rotating model. Then the rotating progenitor experiences effective neutrino heating especially around an equatorial plane and explodes even with somewhat low neutrino luminosity for which the non-rotating model cannot overcome accreting matter and finally collapses. When the rotational speed is fast, the shock expands to about 300 km immediately after the core bounce and then evolves to move outward without shock stalling. We conclude that this positive effect of rotation to explosions is dominant against some possible negative aspects, for example, lower neutrino luminosity caused by less contraction of the rotating core.

    本文言語English
    ホスト出版物のタイトルAIP Conference Proceedings
    出版社American Institute of Physics Inc.
    ページ290-295
    ページ数6
    1594
    ISBN(印刷版)9780735412286
    DOI
    出版ステータスPublished - 2014
    イベント12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013 - Tsukuba
    継続期間: 2013 11 182013 11 21

    Other

    Other12th International Symposium on Origin of Matter and Evolution of Galaxies, OMEG 2013
    CityTsukuba
    Period13/11/1813/11/21

    ASJC Scopus subject areas

    • 物理学および天文学(全般)

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