Roles of fast neutrino-flavor conversion on the neutrino-heating mechanism of core-collapse supernova

Abstract

One of the greatest uncertainties in any modeling of inner engine of core-collapse supernova (CCSN) is neutrino flavor conversions driven by neutrino self-interactions. We carry out large-scale numerical simulations of multi-energy, multi-angle, three-flavor framework, and general relativistic quantum kinetic neutrino transport in spherical symmetry with an essential set of neutrino-matter interactions under a realistic fluid profile of CCSN. Our result suggests that the neutrino heating in the gain region is reduced by $\sim 40\%$ due to fast neutrino-flavor conversion (FFC). We also find that the total luminosity of neutrinos is enhanced by $\sim 30\%$, for which the substantial increase of heavy-leptonic neutrinos by FFCs are mainly responsible. This study provides evidence that FFC has a significant impact on the delayed neutrino-heating mechanism.

Accepted to PRL

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• Flavor Equilibration of Supernova Neutrinos: Exploring the Dynamics of Slow Modes
• Neutrino-driven massive stellar explosions in 3D fostered by magnetic fields via turbulent $\alpha$-effect
• Muon-induced collisional flavor instability in core-collapse supernova
• Comparative Testing of Subgrid Models for Fast Neutrino Flavor Conversions in Core-collapse Supernova Simulations
• Quantum Closures for Neutrino Moment Transport
• Neutrino quantum kinetics in two spatial dimensions
• Predicting the outcome of collisional neutrino flavor conversion
• Diagnosing electron-neutrino lepton number crossings in core-collapse supernovae: A comparison of methods
• Advection Algorithms for Quantum Neutrino Moment Transport
• Gravitational-Wave Signatures of Nonstandard Neutrino Properties in Collapsing Stellar Cores
• Flavor composition of supernova neutrinos
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• Approximate Energy-Integration Method for Identifying Collisional Neutrino Flavor Instabilities
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• Comprehensive neutrino light curves and spectra: from pre-supernova evolution to early supernova phase