Asymmetric Neutrino Production in Strongly Magnetized Proto-Neutron Stars

Abstract

We calculate the neutrino production cross-section through the direct URCA process in proto-neutron star matter in the presence of a strong magnetic field. We assume isoentropic conditions and introduce a new equation of state parameter-set in the relativistic mean-field approach that can reproduce neutron stars with $M>1.96$ M${}_{\odot }$ as required by observations. We find that the production process increases the flux of emitted neutrinos along the direction parallel to the magnetic field and decreases the flux in the opposite direction. This means that the neutrino flux asymmetry due to the neutrino absorption and scattering processes in a magnetic field becomes larger by the inclusion of the neutrino production process.

arXiv comment9 pages, 3 figures

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Cited by in corpus (4)

• Physics in Very Strong Magnetic Fields: Introduction and Overview
• Axion Production from Landau Quantization in the Strong Magnetic Field of Magnetars
• Asymmetry of the neutrino mean free path in hot neutron matter under strong magnetic fields
• ν\barν -Pair Synchrotron Emission in Neutron-Star Matter based on a Relativistic Quantum Approach