Spectra and rates of bremsstrahlung neutrino emission in stars

Abstract

We calculate the energy-differential rate for neutrino emission from electron-nucleus bremsstrahlung in stellar interiors taking into account the effects of electron screening and ionic correlations. We compare the energy-differential and the net rates, as well as the average ${\bar{\nu }}_e$ and ${\bar{\nu }}_x$ $(x=\mu ,\tau )$ energies, for this process with those for $e^{\pm }$ pair annihilation, plasmon decay, and photo-neutrino emission over a wide range of temperature and density. We also compare our updated energy loss rates for the above thermal neutrino emission processes with the fitting formulas widely used in stellar evolution models and determine the temperature and density domain in which each process dominates. We discuss the implications of our results for detection of ${\bar{\nu }}_e$ from massive stars during their pre-supernova evolution and find that pair annihilation makes the predominant contribution to the signal from the thermal emission processes.

arXiv comment24 pages, 7 figures

References in corpus (18)

• Neutrino Physics with JUNO
• Cuba - a library for multidimensional numerical integration
• Neutrino Emission from Neutron Stars
• Identifying the neutrino mass spectrum from a supernova neutrino burst
• Neutrino Energy Loss from the Plasma Process at all Temperatures and Densities
• Detection possibility of the pair-annihilation neutrinos from the neutrino-cooled pre-supernova star
• KamLAND Sensitivity to Neutrinos from Pre-Supernova Stars
• On ion-ion correlation effects during stellar core collapse
• Presupernova neutrino events relating to the final evolution of massive stars
• Neutrino spectrum from the pair-annihilation process in the hot stellar plasma
• Nuclear Statistical Equilibrium neutrino spectrum
• The photo-neutrino process in astrophysical systems
• Differential Neutrino Rates and Emissivities from the Plasma Process in Astrophysical Systems
• Effects of Electron Band Structure on Neutrino Pair Bremsstrahlung in Neutron Star Crusts
• Ion-Ion Correlation Effect on the Neutrino-Nucleus Scattering in Supernova Cores
• Plasmaneutrino spectrum
• Effects of ion and electron correlations on neutrino scattering in the infall phase of a supernova
• Neutrino Scattering in Heterogeneous Supernova Plasmas

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