Fast Neutrino Flavor Conversions can Help and Hinder Neutrino-Driven Explosions
High Energy Astrophysical Phenomena
2025-01-03 v2 Solar and Stellar Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Nuclear Theory
Abstract
We present the first simulations of core-collapse supernovae in axial symmetry with feedback from fast neutrino flavor conversion (FFC). Our schematic treatment of FFCs assumes instantaneous flavor equilibration under the constraint of lepton-number conservation individually for each flavor. Systematically varying the spatial domain where FFCs are assumed to occur, we find that they facilitate SN explosions in low-mass (9-12 solar masses) progenitors that otherwise explode with longer time delays, whereas FFCs weaken the tendency to explode of higher-mass (around 20 solar masses) progenitors.
Keywords
Cite
@article{arxiv.2305.11207,
title = {Fast Neutrino Flavor Conversions can Help and Hinder Neutrino-Driven Explosions},
author = {Jakob Ehring and Sajad Abbar and Hans-Thomas Janka and Georg Raffelt and Irene Tamborra},
journal= {arXiv preprint arXiv:2305.11207},
year = {2025}
}
Comments
8 pages, 4 figures, slightly modified version, accepted by PRL