Spiral mode of standing accretion shock instability in core-collapse supernovae

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

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    The study of standing accretion shock instability (SASI) in core-collapse supernova cores has been done with three-dimensional (3D) computer simulations. Rotations with various perturbations were introduced from outer boundary of an initial steady accreting flow. We found that one or two armed spiral accreting flow onto the proto-neutron star (PNS) is formed inside the shock wave depending on perturbations. The linear growth of spiral modes are clearly diagnosed by the mode analysis of the shock surface, and the lower m modes grow quickly in the linear regime.

    Original languageEnglish
    Pages (from-to)43-47
    Number of pages5
    JournalAstrophysics and Space Science
    Volume322
    Issue number1-4
    DOIs
    Publication statusPublished - 2009 Aug

    Fingerprint

    supernovae
    shock
    accretion
    perturbation
    steady flow
    shock wave
    computer simulation
    neutron stars
    shock waves
    computerized simulation
    analysis

    Keywords

    • Hydrodynamics
    • Instability
    • Supernovae

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

    Cite this

    Spiral mode of standing accretion shock instability in core-collapse supernovae. / Iwakami, Wakana; Ohnishi, Naofumi; Kotake, Kei; Yamada, Shoichi; Sawada, Keisuke.

    In: Astrophysics and Space Science, Vol. 322, No. 1-4, 08.2009, p. 43-47.

    Research output: Contribution to journalArticle

    Iwakami, Wakana ; Ohnishi, Naofumi ; Kotake, Kei ; Yamada, Shoichi ; Sawada, Keisuke. / Spiral mode of standing accretion shock instability in core-collapse supernovae. In: Astrophysics and Space Science. 2009 ; Vol. 322, No. 1-4. pp. 43-47.
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