Neutrinos and core-collapse supernovae

TL;DR

This paper reviews recent advances in understanding neutrino flavor conversion in core-collapse supernovae, emphasizing the impact of neutrino-neutrino interactions, spectral phenomena, and potential CP violation effects on supernova observations.

Contribution

It highlights new phenomena caused by neutrino-neutrino interactions, including spectral splits, magnetic resonance, and leptonic CP violation effects, advancing supernova neutrino physics.

Findings

Neutrino-neutrino interactions induce new flavor conversion phenomena.

Spectral split and magnetic resonance are linked in supernova neutrino physics.

Leptonic CP violation can significantly affect supernova neutrino fluxes.

Abstract

We discuss the recent progress in our understanding of neutrino flavour conversion in core-collapse supernovae and focus on the effects coming from the neutrino-neutrino interaction. The latter has been shown to engender new phenomena, modifying significantly the neutrino fluxes and supernova observations. In particular, we make the link between the spectral split and the magnetic resonance phenomenon. Moreover, recent investigations have demonstrated the existence of leptonic CP violation effects on the supernova neutrino fluxes. We summarize these findings.