Neutron star kicks affected by standing accretion shock instability for core-collapse supernovae

Wakana Iwakami, Kei Kotake, Naofumi Ohnishi, Shoichi Yamada, Keisuke Sawada

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    We investigate a proto-neutron star kick velocity estimated from kinetic momentum of a flow around the proto-neutron star after the standing accretion shock instability grows. In this study, ten different types of random perturbations are imposed on the initial flow for each neutrino luminosity. We found that the kick velocities of proto-neutron star are widely distributed from 40 km s -1 to 180 km s -1 when the shock wave reaches 2000 km away from the center of the star. The average value of kick velocity is 115 km s -1, whose value is smaller than the observational ones. The kick velocities do not depend on the neutrino luminosity.

    Original languageEnglish
    Title of host publicationProceedings of the International Astronomical Union
    Pages337-338
    Number of pages2
    Volume7
    EditionS279
    DOIs
    Publication statusPublished - 2011 Apr

    Publication series

    NameProceedings of the International Astronomical Union
    NumberS279
    Volume7
    ISSN (Print)17439213
    ISSN (Electronic)17439221

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    Keywords

    • hydrodynamics
    • instabilities.
    • shock waves
    • supernovae

    ASJC Scopus subject areas

    • Astronomy and Astrophysics

    Cite this

    Iwakami, W., Kotake, K., Ohnishi, N., Yamada, S., & Sawada, K. (2011). Neutron star kicks affected by standing accretion shock instability for core-collapse supernovae. In Proceedings of the International Astronomical Union (S279 ed., Vol. 7, pp. 337-338). (Proceedings of the International Astronomical Union; Vol. 7, No. S279). https://doi.org/10.1017/S1743921312013233