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Three-dimensional core-collapse supernova models with phenomenological treatment of neutrino flavor conversions

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arxiv 2501.15256 v2 pith:HFEEIXZW submitted 2025-01-25 astro-ph.HE astro-ph.SRhep-ph

Kanji Mori , Tomoya Takiwaki , Kei Kotake , Shunsaku Horiuchi This is my paper
classification astro-ph.HEastro-ph.SRhep-ph
keywords conversionsflavorneutrinosupernovathree-dimensionalenergyeventexplosion
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We perform three-dimensional supernova simulations with a phenomenological treatment of neutrino flavor conversions. We show that the explosion energy can increase to as high as ~10^51 erg depending on the critical density for the onset of flavor conversions, due to a significant enhancement of the mean energy of electron antineutrinos. Our results confirm previous studies showing such energetic explosions, but for the first time in three-dimensional configurations. In addition, we predict neutrino and gravitational wave (GW) signals from a nearby supernova explosion aided by flavor conversions. We find that the neutrino event number decreases because of the reduced flux of heavy-lepton neutrinos. In order to detect GWs, next-generation GW telescopes such as Cosmic Explorer and Einstein Telescope are needed even if the supernova event is located at the Galactic center. These findings show that the neutrino flavor conversions can significantly change supernova dynamics and highlight the importance of further studies on the quantum kinetic equations to determine the conditions of the conversions and their asymptotic states.

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Cited by 5 Pith papers

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  4. Electron-neutrino lepton number crossings: Variations with the supernova core physics

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    In a suite of 12 supernova models, electron-neutrino lepton number crossings appear at larger radii when proto-neutron star convection is included and at smaller radii when muon production is included.

  5. Comparative Testing of Subgrid Models for Fast Neutrino Flavor Conversions in Core-collapse Supernova Simulations

    astro-ph.HE 2025-06 conditional novelty 6.0 of 10

    A 1D supernova simulation with four-species BGK subgrid modeling shows that three-species assumptions overestimate flavor conversion and that semi-implicit time integration is the most reliable.

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