In this paper, we examine the neutrino signals from 24 initially nonrotating, three-dimensional core-collapse supernova (CCSN) simulations carried to late times. We find that not only does the neutrino luminosity signal encode information about each stage of the CCSN process, but that the monotonic dependence of the luminosity peak height with compactness enables one to infer the progenitor core structure from the neutrino signal. We highlight a systematic relationship between the luminosity peak height with its timing. Additionally, we emphasize that the total energy radiated in neutrinos is monotonic with progenitor compactness, and that the mean neutrino energy contains a unique spiral Standing Accretion Shock Instability (SASI) signature for nonexploding, black hole (BH)-forming models. We also find that neutrino emissions are not isotropic and that the anisotropy increases roughly with progenitor compactness. To assess the detectability of these neutrino signal features, we provide examples of the event rates for our models for the JUNO, DUNE, SK, and IceCube detectors using the snewpy software [A. L. Baxter et al. (Snews Collaboration), snewpy: A data pipeline from supernova simulations to neutrino signals, Astrophys. J. 925, 107 (2022)], and find that many of the trends in the luminosity signal can be detectable across several detectors and oscillation models. Finally, we discuss correlations between the radiated neutrino energy and the evolution of the gravitational-wave f-mode.

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• Novae & supernovae
• Neutrinos
• Neutrino detection