Multi-energy diffuse neutrino fluxes originating from core-collapse supernovae

Diffuse neutrino fluxes attributed to two different physical processes in core collapse of massive stars are visited with their potentiality of exploring stellar physics more deeply being stressed. In this work, available models of thermal MeV-scale neutrinos produced at the core of collapsing stars and non-thermal high-energy neutrinos emitted from accelerated cosmic rays interacting with circumstellar material are bridged through features of core-collapse supernovae such as progenitor mass and optical properties. The calculated diffuse fluxes are presented with discussion about their detection prospects at neutrino telescopes.