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Role of medium modifications for neutrino-pair processes from nucleon-nucleon bremsstrahlung - Impact on the protoneutron star deleptonization

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arxiv 1608.05004 v2 pith:AZ33CPXQ submitted 2016-08-17 astro-ph.HE nucl-th

Tobias Fischer This is my paper · ORCID
classification astro-ph.HEnucl-th
keywords neutrino-pairbremsstrahlungdeleptonizationexchangeimpactmediumneutrinonucleon-nucleon
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In this article the neutrino-pair production from nucleon-nucleon (NN) bremsstrahlung is explored via medium-modifications of the strong interactions at the level of the one-pion exchange approximation. It governs the bulk part of the NN interaction at low densities relevant for the neutrino physics in core-collapse supernova studies. The resulting medium modified one-pion exchange rate for the neutrino-pair processes is implemented in simulations of core collapse supernovae in order to study the impact on the neutrino signal emitted from the deleptonization of the nascent proto-neutron star. Consequences for the nucleosynthesis of heavy elements of the material ejected from the PNS surface are discussed.

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Cited by 3 Pith papers

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

  1. Strongly interacting matter with criticality induced by modified excluded volume in core-collapse supernova simulations

    astro-ph.HE 2026-07 conditional novelty 6.0 of 10

    Modified-excluded-volume EOS with continuous van der Waals phase transition yields CCSN explosions and a several-millisecond neutrino burst, while the same EOS under Gibbs construction fails to explode.

  2. Open-source library for performance-portable neutrino reaction rates: Application to neutron star mergers

    astro-ph.HE 2024-12 conditional novelty 6.0 of 10

    A new open-source neutrino-rate library shows that inelastic neutrino-electron/positron scattering and nucleon decay reactions materially change neutrino opacities and decoupling surfaces in neutron star merger conditions.

  3. Thermodynamics conditions of matter in the neutrino decoupling region during neutron star mergers

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

    In neutron star merger remnants, neutrinos decouple at densities around 10^11 g/cm^3 for average energies, while heavy-flavor neutrinos freeze out of equilibrium deeper, at several times 10^12 g/cm^3.

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