Neutrino and axion cooling of neutron stars

Neutron stars have long been known to cool by emitting neutrinos and antineutrinos from their core.  I will discuss the different processes that produce neutrinos in the core of a neutron star and discuss how the rate of cooling can tell you about the equation of state of nuclear matter.  I will also discuss axions and how they could serve as a mechanism to cool neutron stars and neutron star mergers.  Conversely, studying cooling in neutron stars and mergers can constrain the interaction of axions with nucleons.