Circular polarizations of gravitational waves from core-collapse supernovae

A clear indication of rapid rotation

Kazuhiro Hayama, Takami Kuroda, Ko Nakamura, Shoichi Yamada

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    We propose to employ the circular polarization of gravitational waves emitted by core-collapse supernovae as an unequivocal indication of rapid rotation deep in their cores just prior to collapse. It has been demonstrated by three dimensional simulations that nonaxisymmetric accretion flows may develop spontaneously via hydrodynamical instabilities in the postbounce cores. It is not surprising, then, that the gravitational waves emitted by such fluid motions are circularly polarized. We show, in this Letter, that a network of the second generation detectors of gravitational waves worldwide may be able to detect such polarizations up to the opposite side of the Galaxy as long as the rotation period of the core is shorter than a few seconds prior to collapse.

    Original languageEnglish
    Article number151102
    JournalPhysical Review Letters
    Volume116
    Issue number15
    DOIs
    Publication statusPublished - 2016 Apr 12

    Fingerprint

    circular polarization
    gravitational waves
    supernovae
    indication
    galaxies
    fluids
    detectors
    polarization
    simulation

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Circular polarizations of gravitational waves from core-collapse supernovae : A clear indication of rapid rotation. / Hayama, Kazuhiro; Kuroda, Takami; Nakamura, Ko; Yamada, Shoichi.

    In: Physical Review Letters, Vol. 116, No. 15, 151102, 12.04.2016.

    Research output: Contribution to journalArticle

    @article{8a99055b6d424731a13eaf85256bf347,
    title = "Circular polarizations of gravitational waves from core-collapse supernovae: A clear indication of rapid rotation",
    abstract = "We propose to employ the circular polarization of gravitational waves emitted by core-collapse supernovae as an unequivocal indication of rapid rotation deep in their cores just prior to collapse. It has been demonstrated by three dimensional simulations that nonaxisymmetric accretion flows may develop spontaneously via hydrodynamical instabilities in the postbounce cores. It is not surprising, then, that the gravitational waves emitted by such fluid motions are circularly polarized. We show, in this Letter, that a network of the second generation detectors of gravitational waves worldwide may be able to detect such polarizations up to the opposite side of the Galaxy as long as the rotation period of the core is shorter than a few seconds prior to collapse.",
    author = "Kazuhiro Hayama and Takami Kuroda and Ko Nakamura and Shoichi Yamada",
    year = "2016",
    month = "4",
    day = "12",
    doi = "10.1103/PhysRevLett.116.151102",
    language = "English",
    volume = "116",
    journal = "Physical Review Letters",
    issn = "0031-9007",
    publisher = "American Physical Society",
    number = "15",

    }

    TY - JOUR

    T1 - Circular polarizations of gravitational waves from core-collapse supernovae

    T2 - A clear indication of rapid rotation

    AU - Hayama, Kazuhiro

    AU - Kuroda, Takami

    AU - Nakamura, Ko

    AU - Yamada, Shoichi

    PY - 2016/4/12

    Y1 - 2016/4/12

    N2 - We propose to employ the circular polarization of gravitational waves emitted by core-collapse supernovae as an unequivocal indication of rapid rotation deep in their cores just prior to collapse. It has been demonstrated by three dimensional simulations that nonaxisymmetric accretion flows may develop spontaneously via hydrodynamical instabilities in the postbounce cores. It is not surprising, then, that the gravitational waves emitted by such fluid motions are circularly polarized. We show, in this Letter, that a network of the second generation detectors of gravitational waves worldwide may be able to detect such polarizations up to the opposite side of the Galaxy as long as the rotation period of the core is shorter than a few seconds prior to collapse.

    AB - We propose to employ the circular polarization of gravitational waves emitted by core-collapse supernovae as an unequivocal indication of rapid rotation deep in their cores just prior to collapse. It has been demonstrated by three dimensional simulations that nonaxisymmetric accretion flows may develop spontaneously via hydrodynamical instabilities in the postbounce cores. It is not surprising, then, that the gravitational waves emitted by such fluid motions are circularly polarized. We show, in this Letter, that a network of the second generation detectors of gravitational waves worldwide may be able to detect such polarizations up to the opposite side of the Galaxy as long as the rotation period of the core is shorter than a few seconds prior to collapse.

    UR - http://www.scopus.com/inward/record.url?scp=84963795966&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84963795966&partnerID=8YFLogxK

    U2 - 10.1103/PhysRevLett.116.151102

    DO - 10.1103/PhysRevLett.116.151102

    M3 - Article

    VL - 116

    JO - Physical Review Letters

    JF - Physical Review Letters

    SN - 0031-9007

    IS - 15

    M1 - 151102

    ER -