A joint research group from the A03, C01, and A01 teams conducted the first systematic search for optical counterparts to a neutrino “multiplet,” a rare event. Their results have been published in The Astrophysical Journal (October 23 issue), the journal of the American Astronomical Society. For details, please refer to the press release from Tohoku University.
The figure shows arrival direction of a high-energy neutrino multiplet event determined by the IceCube experiment, overlaid on the visible night sky (generated with Stellarium). The right panel shows a zoomed-in optical image of the same region. The red ellipse indicates the 1σ uncertainty estimated by IceCube. ©Stellarium, Zwicky Transient Facility