Neutrino processes determine the viability of the neutrino-driven mechanism of core-collapse supernova explosions. Here, I list and discuss some of the various neutrino scattering, absorption, and production process that collectively determine the outcome of core collapse, the creation of neutron stars, the ejection of the stellar mantle, and the cooling of protoneutron stars. These are the essential inputs into the radiation/hydrodynamics codes with which astrophysicists simulate the supernova phenomenon. Hence, understanding these processes is a crucial prerequisite to the further advancement of supernova theory.
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