Nuclear effects on axions emission rates from nucleon-nucleon bremsstrahlung

Abstract

The rates of axion emissions by nucleon‐nucleon bremsstrahlung from neutron stars obtained with the inclusion of the full angular momentum contribution from a nuclear one‐pion‐exchange potential (OPEP), are studied in different conditions of temperature and degeneracy in both, non degenerate (ND) and degenerate (D) regimes. The comparison with the previous results obtained in literature, where only the high momentum limit of the OPEP expressions are used, is done and the differences discussed.