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

    10 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

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Fingerprint Dive into the research topics of 'Circular polarizations of gravitational waves from core-collapse supernovae: A clear indication of rapid rotation'. Together they form a unique fingerprint.

  • Cite this