Impact of Nucleon-Nucleon Bremsstrahlung Rates Beyond One-Pion Exchange

Abstract

Neutrino-pair production and annihilation through nucleon-nucleon bremsstrahlung is included in current supernova simulations by rates that are based on the one-pion-exchange approximation. Here we explore the consequences of bremsstrahlung rates based on a modern nuclear interactions for proto-neutron star cooling and the corresponding neutrino emission. We find that despite a reduction of the bremsstrahlung emission by a factor of 2-5 in the neutrinospheric region, models with the improved treatment exhibit only $\lesssim$5% changes of the neutrino luminosities and an increase of $\lesssim$0.7 MeV of the average energies of the radiated neutrino spectra, with the largest effects for the antineutrinos of all flavors and at late times. Overall, the proto-neutron star cooling evolution is slowed down modestly by $\lesssim$0.5-1 s.

arXiv comment11 pages, 7 figures, minor changes and additions, to appear in Phys. Rev. D

References in corpus (34)

• Modern Theory of Nuclear Forces
• Chiral effective field theory and nuclear forces
• Explosion Mechanisms of Core-Collapse Supernovae
• Theory of Core-Collapse Supernovae
• Equation of state and neutron star properties constrained by nuclear physics and observation
• Core-collapse supernova equations of state based on neutron star observations
• Monte Carlo Study of Supernova Neutrino Spectra Formation
• Perspectives on Core-Collapse Supernova Theory
• Two-dimensional hydrodynamic core-collapse supernova simulations with spectral neutrino transport. I. Numerical method and results for a 15 M_sun star
• Radiation hydrodynamics with neutrinos: Variable Eddington factor method for core-collapse supernova simulations
• Neutrino Interactions in Hot and Dense Matter
• The Remarkable Deaths of 9 - 11 Solar Mass Stars
• Weak magnetism for antineutrinos in supernovae
• Neutron matter from chiral effective field theory interactions
• Supernova Neutrino Opacity from Nucleon-Nucleon Bremsstrahlung and Related Processes
• Neutrino-driven supernova of a low-mass iron-core progenitor boosted by three-dimensional turbulent convection
• Charged-current weak interaction processes in hot and dense matter and its impact on the spectra of neutrinos emitted from proto-neutron star cooling
• Medium modification of the charged current neutrino opacity and its implications
• The Effects of Correlations on Neutrino Opacities in Nuclear Matter
• New Two-Dimensional Models of Supernova Explosions by the Neutrino-Heating Mechanism: Evidence for Different Instability Regimes in Collapsing Stellar Cores
• Asymmetric nuclear matter based on chiral two- and three-nucleon interactions
• The explosion mechanism of core-collapse supernovae: progress in supernova theory and experiments
• Neutrino and axion emissivities of neutron stars from nucleon-nucleon scattering data
• Symmetric nuclear matter with chiral three-nucleon forces in the self-consistent Green's functions approach
• Mu- and Tau-Neutrino Spectra Formation in Supernovae
• Nuclear chiral dynamics and thermodynamics
• Thermodynamics of isospin-asymmetric nuclear matter from chiral effective field theory
• Role of medium modifications for neutrino-pair processes from nucleon-nucleon bremsstrahlung - Impact on the protoneutron star deleptonization
• Chiral effective field theory calculations of neutrino processes in dense matter
• Neutrino processes in partially degenerate neutron matter
• Nucleon self-energies for supernova equations of state
• WHEN DO SUPERNOVA NEUTRINOS OF DIFFERENT FLAVORS HAVE SIMILAR LUMINOSITIES BUT DIFFERENT SPECTRA ?
• Unified approach to structure factors and neutrino processes in nucleon matter
• Supernova matter at subnuclear densities as a resonant Fermi gas: Enhancement of neutrino rates

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