# Neutrino Signal of Electron-Capture Supernovae from Core Collapse to Cooling

## TL;DR

This paper presents a detailed simulation of an 8.8 solar mass electron-capture supernova, covering collapse to cooling, revealing neutrino emission characteristics and implications for nucleosynthesis and neutrino oscillations.

## Contribution

It provides the first comprehensive simulation from collapse to cooling for this supernova type, including neutrino spectra and flavor oscillation insights.

## Key findings

- Neutrino luminosities reach equipartition among species.
- Spectra of electron antineutrinos and muon/tau antineutrinos become very similar.
- Short evolution time (~9 s) due to nucleon-nucleon correlations.

## Abstract

An 8.8 solar mass electron-capture supernova (SN) was simulated in spherical symmetry consistently from collapse through explosion to nearly complete deleptonization of the forming neutron star. The evolution time of about 9 s is short because of nucleon-nucleon correlations in the neutrino opacities. After a brief phase of accretion-enhanced luminosities (~200 ms), luminosity equipartition among all species becomes almost perfect and the spectra of electron antineutrinos and muon/tau antineutrinos very similar. We discuss consequences for the neutrino-driven wind as a nucleosynthesis site and for flavor oscillations of SN neutrinos.