The $\nu$-process with fully time-dependent supernova neutrino emission spectra

Abstract

The neutrino process that occurs in the outer stellar shells during a supernova explosion and involves neutrino-nucleus reactions produces a range of rare, stable and radioactive isotopes. We improve previous $\nu$-process studies by using, for the first time, the time-dependent neutrino emission spectra, as predicted from supernova simulations, rather than a simplified parametric description modeled after the neutron-star cooling phase. In particular, our calculations use time-dependent neutrino spectra for all neutrino species, consider their deviation from a Fermi-Dirac distribution and account for the neutrino emission from the neutrino burst and accretion phases. We find that the time-dependent treatment of the neutrino emission spectra results in higher yields for the selected nuclei produced by the $\nu$~process as compared to previous studies and also compared to the approximation of assuming constant neutrino energies corresponding to the time-averaged mean energy radiated in each species. The effect is largest for nuclides produced by charged-current reactions. Our results reflect the dynamical competition between neutrino-induced reactions and the effect of the shock passage through the star. By varying the neutrino burst luminosity and the duration of the accretion phase, we study the impact of these early emission phases and their uncertainties on the $\nu$-process nucleosynthesis. We find that the deviation of the neutrino spectra from a Fermi-Dirac distribution calculated in supernova simulations has a negligible effect on the $\nu$-process yields.

arXiv comment16 pages, 8 figures, 2 tables, submitted to the Astrophysical Journal

References in corpus (50)

• The chemical composition of the Sun
• Core-Collapse Supernovae from 9 to 120 Solar Masses Based on Neutrino-powered Explosions
• Nucleosynthesis in Massive Stars With Improved Nuclear and Stellar Physics
• Theory of Core-Collapse Supernovae
• Core-collapse supernova equations of state based on neutron star observations
• Nucleosynthesis and Remnants in Massive Stars of Solar Metallicity
• Neutrino-induced nucleosynthesis of A>64 nuclei: The nu p-process
• Monte Carlo Study of Supernova Neutrino Spectra Formation
• Abundances of the elements in the solar system
• Physics of Core-Collapse Supernovae in Three Dimensions: a Sneak Preview
• Radiation hydrodynamics with neutrinos: Variable Eddington factor method for core-collapse supernova simulations
• Chemical evolution with rotating massive star yields: I. The solar neighbourhood and the s-process elements
• Supernova Neutrino Detection
• Shock Breakout in Core-Collapse Supernovae and its Neutrino Signature
• Supernova Simulations with Boltzmann Neutrino Transport: A Comparison of Methods
• Conditions for Shock Revival by Neutrino Heating in Core-Collapse Supernovae
• A Simple Approach to the Supernova Progenitor-Explosion Connection
• NuGrid stellar data set I. Stellar yields from H to Bi for stars with metallicities Z = 0.02 and Z = 0.01
• Neutrino Nucleosynthesis
• The Development of Explosions in Axisymmetric Ab Initio Core-Collapse Supernova Simulations of 12-25 $M_{\odot }$ Stars
• Neutrino-nucleus reactions and nuclear structure
• Nucleosynthesis in the Innermost Ejecta of Neutrino-Drive Supernova Explosions in Two Dimensions
• Type Ia Supernovae as Sites of p-process: Two-Dimensional Models Coupled to Nucleosynthesis
• Production and evolution of Li, Be and B isotopes in the Galaxy
• High-resolution supernova neutrino spectra represented by a simple fit
• Global Comparison of Core-Collapse Supernova Simulations in Spherical Symmetry
• The Dynamics of Neutrino-Driven Supernova Explosions after Shock Revival in 2D and 3D
• Signal for supernova ${\nu }_{\mu }$ and ${\nu }_{\tau }$ neutrinos in water Čerenkov detectors
• Exploiting the neutronization burst of a galactic supernova
• Crucial Physical Dependencies of the Core-Collapse Supernova Mechanism
• PUSHing Core-Collapse Supernovae to Explosions in Spherical Symmetry III: Nucleosynthesis Yields
• Two Dimensional Core-Collapse Supernova Explosions Aided by General Relativity with Multidimensional Neutrino Transport
• Neutrino-Nucleus Reaction Cross Sections for Light Element Synthesis in Supernova Explosions
• Effects of neutrino oscillations on nucleosynthesis and neutrino signals for an 18 M supernova model
• Evolution of Fluorine Abundances with the ν-Process
• Neutrino-nucleus reactions and their role for supernova dynamics and nucleosynthesis
• Neutrino-Driven Convection in Core-Collapse Supernovae: High-Resolution Simulations
• Constraining the Spectrum of Supernova Neutrinos from Neutrino-Process-Induced Light-Element Synthesis
• The $\nu$ process in the light of an improved understanding of supernova neutrino spectra
• Turbulence in Core-Collapse Supernovae
• Role of core-collapse supernovae in explaining Solar System abundances of p nuclides
• Survival of Nature's Rarest Isotope 180Ta under Stellar Conditions
• Neutrino induced reactions related to the $\nu$-process nucleosynthesis of ${}^{92}$Nb and ${}^{98}$Tc
• Neutrino Oscillation Effects on Supernova Light Element Synthesis
• Evidence from stable isotopes and Be-10 for solar system formation triggered by a low-mass supernova
• Fluorine in the Solar neighborhood: No evidence for the neutrino process
• Reanalysis of the (J = 5) state at 592 keV in 180Ta and its role in the neutrino-process nucleosynthesis of 180Ta in supernovae
• Impact of Nucleon-Nucleon Bremsstrahlung Rates Beyond One-Pion Exchange
• Neutrino-nucleus reactions on ${}^{16}$O based on new shell-model Hamiltonians
• 11B and Constraints on Neutrino Oscillations and Spectra from Neutrino Nucleosynthesis

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