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Collective neutrino oscillations and detectabilities in failed supernovae

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arxiv 1811.03320 v1 pith:LPJVQQ5Z submitted 2018-11-08 astro-ph.HE hep-ph

Masamichi Zaizen , Takashi Yoshida , Kohsuke Sumiyoshi , Hideyuki Umeda This is my paper · ORCID
classification astro-ph.HEhep-ph
keywords neutrinofailedsupernovaetimecollectivedetectorseffectsevent
verification ladder T0 review T1 audit T2 compute T3 formal
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We investigate the collective neutrino oscillations under the three flavor multi-angle approximation in a spherically symmetric simulation of failed supernovae. A failed supernova emits high neutrino fluxes in a short time, while intense accretion proceeds with high electron density enough to experience re-collapse into a black hole. Our results show that matter-induced effects completely dominate over neutrino self-interaction effects and multi-angle matter suppression occurs at all time snapshots we studied. These facts suggest us that only MSW resonances affect the neutrino flavor conversions in failed supernovae and simple spectra will be observed at neutrino detectors. We also estimate the neutrino event rate in current and future neutrino detectors from a source at 10 kpc as a Galactic event. The time evolution of neutrino detection could provide information about the dense and hot matter and constrain the neutrino mass ordering problem.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Neutrino oscillations in a neutrino-dominated accretion disk around a Kerr BH

    astro-ph.HE 2019-09 conditional novelty 6.0 of 10

    Neutrino self-interactions inside neutrino-cooled accretion disks are argued to push flavors toward equipartition, reducing the neutrino-antineutrino annihilation energy deposition around black holes by a factor up to...

  2. Neutrino halo effect on collective neutrino oscillation in iron core-collapse supernova model of a 9.6 $M_{\odot}$ star

    astro-ph.HE 2019-08 conditional novelty 6.0 of 10

    For a 9.6 solar mass supernova, including scattered halo neutrinos delays the onset of collective neutrino oscillation at early times and sharpens spectral swap features, improving their detectability.

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