On probing turbulence in core-collapse supernovae in upcoming neutrino detectors
arXiv:2310.08627 · doi:10.1088/1475-7516/2024/03/040
Abstract
Neutrino propagation through a turbulent medium can be highly non-adiabatic leading to distinct signatures in the survival probabilities. A core-collapse supernova can be host to a number of hydrodynamic instabilities which occur behind the shockfront. Such instabilities between the forward shock and a possible reverse shock can lead to cascades introducing turbulence in the associated matter profile, which can imprint itself in the neutrino signal. In this work, we consider realistic matter profiles and seed in the turbulence using a randomization scheme to study its effects on neutrino propagation in an effective two-flavor framework. We focus on the potential of upcoming neutrino detectors - DUNE and Hyper-Kamiokande to constrain the parameters characterizing turbulence in a supernova. We find that these experiments can effectively constrain the parameter space for the amplitude of the spectra, they will only have mild sensitivity to the spectral index, and cannot inform on deviations from the usual Kolmogorov inverse power law. Furthermore, we also confirm that the double-dip feature, originally predicted in the neutrino spectra associated with forward and reverse shocks, can be completely washed away in the presence of turbulence, leading to total flavor depolarization.
arXiv comment26 pages, 8 figures; published version
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