Optical Observations Reveal Strong Evidence for High Energy Neutrino Progenitor

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We present the earliest astronomical observation of a high energy neutrino error box in which its variability was discovered after high-energy neutrinos detection.

• The one robotic telescope of the MASTER global international network (Lipunov et al.
• 2010) automatically imaged the error box of the very high-energy neutrino event IceCube-170922A.
• Observations were carried out in minute after the IceCube-170922A neutrino event was detected by the IceCube observatory at the South Pole.