Speaker
Chad Finley
Description
This summer IceCube announced the first evidence of a cosmic source of
high-energy neutrinos. A rare, high-energy neutrino event detected on
2017 Sept. 22 was reported by IceCube in a public alert that led to
extensive follow-up observations across the electromagnetic spectrum. A
tantalizing association was found with a blazar, an active galaxy where
one of the jets from the central black hole is pointed in our direction.
Subsequent analysis of archival IceCube data revealed further evidence
that the blazar had a previous episode of neutrino emission. These
results may for the first time identify a long-sought accelerator of
high-energy cosmic rays.
