Speaker
Description
In recent years, there are some reported supernovae whose observational time and direction are close to high-energy neutrino events detected by IceCube. High-energy neutrinos from supernovae are theoretically supported by a shock and circumstellar medium (CSM) interaction scenario. We focused on one of such synchronized observations, SN 2023uqf —a Type Ibn supernova—, that was reported to be temporally and spatially consistent with IC-231004A —the 442 TeV neutrino alerted by IceCube—. One-dimensional radiation-hydrodynamics calculations in a dense helium-rich CSM are performed with STELLA to reproduce the optical curve by ZTF. We then calculate high-energy neutrino production based on the shock evolution and CSM conditions inferred from the optical observation. In addition, we discuss the detection chance at IceCube as well as the diffuse neutrino flux contributed by interaction-powered supernovae.
