High-energy neutrino transients and the future of multi-messenger astronomy

The discovery of high-energy astrophysical neutrinos and the first hints of coincident electromagnetic and neutrino emissions opened new opportunities in multi-messenger astronomy. Owing to their high power, transient sources are expected to supply a significant fraction of the observed energetic astroparticles, through enhanced particle acceleration and interactions. Here, we review theoretical expectations of neutrino emission from transient astrophysical sources and the current and upcoming experimental landscape, highlighting the most promising channels for discovery and specifying their detectability.