Inelastic neutrino-electron scattering in hypermassive neutron star simulations increases disc mass by 75% and ejecta mass by 18% with higher neutrino luminosities, while electron-positron annihilation shows no significant impact.
Neutrino Trapping in a Supernova and Ion Screening
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abstract
Neutrino-nucleus elastic scattering is reduced in dense matter because of correlations between ions. The static structure factor for a plasma of electrons and ions is calculated from Monte Carlo simulations and parameterized with a least squares fit. Our results imply a large increase in the neutrino mean free path. This strongly limits the trapping of neutrinos in a supernova by coherent neutral current interactions.
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Influence of neutrino-electron scattering and neutrino-pair annihilation on hypermassive neutron star
Inelastic neutrino-electron scattering in hypermassive neutron star simulations increases disc mass by 75% and ejecta mass by 18% with higher neutrino luminosities, while electron-positron annihilation shows no significant impact.