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arxiv: 1406.0006 · v2 · submitted 2014-05-30 · 🌌 astro-ph.SR · hep-ex· hep-ph

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Neutrino emission characteristics and detection opportunities based on three-dimensional supernova simulations

Irene Tamborra (1) , Georg Raffelt (2) , Florian Hanke (3) , Hans-Thomas Janka (3) , Bernhard Mueller (4) ((1) U. of Amsterdam , (2) MPI Physics , Munich , (3) MPI Astrophysics
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Garching (4) Monash U.)
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classification 🌌 astro-ph.SR hep-exhep-ph
keywords emissionneutrinocasescharacteristicsdirectionformidentifiedmodulations
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The neutrino emission characteristics of the first full-scale three-dimensional supernova simulations with sophisticated three-flavor neutrino transport for three models with masses 11.2, 20 and 27 M_sun are evaluated in detail. All the studied progenitors show the expected hydrodynamical instabilities in the form of large-scale convective overturn. In addition, the recently identified LESA phenomenon (lepton-number emission self-sustained asymmetry) is generic for all our cases. Pronounced SASI (standing accretion-shock instability) activity appears in the 20 and 27 M_sun cases, partly in the form of a spiral mode, inducing large but direction and flavor-dependent modulations of neutrino emission. These modulations can be clearly identified in the existing IceCube and future Hyper-Kamiokande detectors, depending on distance and detector location relative to the main SASI sloshing direction.

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