High-energy Neutrino Emission from Interaction-powered Supernovae

Tetyana Pitik

Luminous optical transients arising from stellar explosions, like Type IIn supernovae (SNe) and their superluminous counterparts (SLSNe II), are believed to be driven by the collision of stellar ejected material with a dense circumstellar medium (CSM). This interaction creates shock waves in the CSM, generating thermal UV/optical emission and accelerating particles to multi-PeV energies. Such energetic particles can undergo hadronic interactions and produce high-energy neutrinos. I will outline the expected multiwavelength emissions from these transients and present the link between detectable neutrino signals at IceCube Neutrino Observatory and electromagnetic signals observed by optical surveys. Additionally, I will demonstrate how detecting high-energy neutrinos can help constrain the parameters of interaction-powered SNe, exploring optimal follow-up strategies for future multi-messenger searches involving these phenomena.