Neutrino Flavor Evolution in Binary Neutron Star Merger Remnants
arXiv:1607.05938 · doi:10.1103/PhysRevD.95.023011
Abstract
We study the neutrino flavor evolution in the neutrino-driven wind from a binary neutron star merger remnant consisting of a massive neutron star surrounded by an accretion disk. With the neutrino emission characteristics and the hydrodynamical profile of the remnant consistently extracted from a three-dimensional simulation, we compute the flavor evolution by taking into account neutrino coherent forward scattering off ordinary matter and neutrinos themselves. We employ a "single-trajectory" approach to investigate the dependence of the flavor evolution on the neutrino emission location and angle. We also show that the flavor conversion in the merger remnant can affect the (anti-)neutrino absorption rates on free nucleons and may thus impact the -process nucleosynthesis in the wind. We discuss the sensitivity of such results on the change of neutrino emission characteristics, also from different neutron star merger simulations.
24 pages, 20 figures. Figures and text in the result section V have been modified (due to a numerical error), conclusion remains
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Cited by in corpus (8)
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- Properties of Kilonovae from Dynamical and Post-Merger Ejecta of Neutron Star Mergers
- Imprints of neutrino-pair flavor conversions on nucleosynthesis in ejecta from neutron-star merger remnants
- Neutrino-antineutrino oscillations induced by strong magnetic fields in dense matter
- r-Process enrichment in the Galactic halo characterized by nucleosynthesis variation in the ejecta of coalescing neutron star binaries
- Neutrinos and Heavy Element Nucleosynthesis
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- Fast Neutrino Conversion in Hydrodynamic Simulations of Neutrino-Cooled Accretion Disks