Gravitational-Wave Signatures of Nonstandard Neutrino Properties in Collapsing Stellar Cores
arXiv:2412.02750 · doi:10.1103/rv17-jm6g
Abstract
We present a novel multi-messenger approach for probing nonstandard neutrino properties through the detection of gravitational waves (GWs) from collapsing stellar cores and associated supernova explosions. We show that neutrino flavor conversion inside the proto-neutron star (PNS), motivated by physics Beyond the Standard Model (BSM), can significantly boost PNS convection. This effect leads to large-amplitude GW emission over a wide frequency range during an otherwise relatively quiescent GW phase shortly after core bounce. Such a signal provides a promising new avenue for exploring nonstandard neutrino phenomena and other BSM physics impacting PNS convection.
5 pages + 10 pages Supplemental Material (SM), 3 figures + 6 figures in SM; this version combines the letter and SM for convenience; during peer review we added a resolution study and extended the discussion about potential BSM scenarios; published in Phys. Rev. Letters
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