On the Origin of High-Energy Cosmic Neutrinos

Understand

Recently, the IceCube collaboration made a big announcement of the first discovery of high-energy cosmic neutrinos.

• Their origin is a new interesting mystery in astroparticle physics.
• The present multimessenger data may give us hints of connection to cosmic-ray and/or gamma-ray sources.
• We look over possible scenarios for the cosmic neutrino signal, and emphasize the importance of multimessenger approaches in identifying the PeV neutrino sources and obtaining crucial clues to the cosmic-ray origin.