Enhanced Supernova Axion Emission and Its Implications
Enhanced Supernova Axion Emission and Its Implications
We calculate the axion emission rate from reactions involving thermal pions in matter encountered in supernovae and neutron star mergers, identify unique spectral features, and explore their implications for astrophysics and particle physics. We find that it is about 2--5 times larger than nucleon-nucleon bremsstrahlung, which in past studies was …