Study of EoS Dependence of SNe via Relic Supernova Neutrino Spectrum

The energy spectrum of relic supernova neutrinos (RSNs) tells us valuable information about neutrinos emitted from the core-collapsed SNe and their cosmological evolution. Recent astronomical observations and theoretical studies of SNe give new insights on stellar evolution, which also infuence supernova explosion mechanism. The RSN energy spectrum is an important tool to investigate these Findings. We show the results of the RSN spectrum based on a variety of astronomical scenarios, which include different supernova occurance, the cosmic star formation history, and metallicity dependent initial mass function. They reveal the signature of nuclear EoS dependence, which appears robustly in spite of the different scenarios.