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. It has been demonstrated by three dimensional simulations that non-axisymmetric accretion flows may develop spontaneously via hydrodynamical instabilities in the post-bounce 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 Galaxy as long as the rotation period is shorter than a few seconds prior to collapse.

5 pages, 3 figures

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Cited by in corpus (18)

• Characterizing the Gravitational Wave Signal from Core-Collapse Supernovae
• Gravitational waves from three-dimensional core-collapse supernova models: The impact of moderate progenitor rotation
• The Science of the Einstein Telescope
• Core Collapse Supernova Gravitational Wave Emission for Progenitors of 9.6, 15, and 25 Solar Masses
• Characteristic Time Variability of Gravitational-Wave and Neutrino Signals from Three-dimensional Simulations of Non-Rotating and Rapidly Rotating Stellar Core-Collapse
• Gravitational-wave Signature of a First-order Quantum Chromodynamics Phase Transition in Core-Collapse Supernovae
• A Linear and Quadratic Time-Frequency Analysis of Gravitational Waves from Core-Collapse Supernovae
• Circular polarization of gravitational waves from non-rotating supernova cores: a new probe into the pre-explosion hydrodynamics
• Three approaches for the classification of protoneutron star oscillation modes
• Chiral Gravitational Waves from Chiral Fermions
• Spontaneous creation of circularly polarized photons in chiral astrophysical systems
• Rapidly rotating neutron star progenitors
• Exploring Supernova Gravitational Waves with Machine Learning
• Probing nuclear physics with supernova gravitational waves and machine learning
• Gravitational wave signals in the deci-Hz range from neutrinos during the proto-neutron star cooling phase
• Estimate of the Detectability of the Circular Polarisation Signature of Supernova Gravitational Waves Using the Stokes Parameters
• Chiral gravitational waves from thermalized neutrinos in the early Universe
• Circular polarization of gravitational waves from magnetorotational supernovae