Münster 2017 – scientific programme

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T: Fachverband Teilchenphysik

T 13: Neutrinoastronomie 1

T 13.5: Talk

Monday, March 27, 2017, 17:50–18:05, H 1

Multiwavelength follow-up of a rare IceCube neutrino multiplet — •Nora Linn Strotjohann for the IceCube collaboration — Desy Zeuthen

IceCube's optical and X-ray follow-up program searches for several neutrino candidates consistent with a point source origin which are detected within 100 s. Follow-up observations can be triggered within minutes to look for an electromagnetic transient that would reveal the nature of the neutrino source.

In February 2016, we detected, for the first time, three neutrino candidates within 100 s. The detection of such a multiplet due to the chance alignment of atmospheric background events is expected once every 13.7 years (0.38 background events expected since the start of the program in 2008).

We triggered extensive multiwavelength follow-up observations spanning from the optical regime to very-high-energy gamma rays. No likely transient neutrino source was identified and due to the good data coverage we can rule out the presence of a close-by supernova, a bright GRB, or a high-energy AGN flare.