High-energy neutrino event detected by IceCube with moderate astrophysical probability.
AI Summary
IceCube detected a high-energy neutrino event IceCube-260916A on September 16, 2026, with a 90% containment region and a moderate probability of being of astrophysical origin. Follow-up searches within 1000 seconds and 2 days did not find additional significant events.
Measurements
| Event ID | IceCube-260916A |
|---|---|
| Source | IceCube |
| Alert type | NEUTRINO |
| Significance | medium |
| Trigger time (UTC) | Wed, 16 Sep 2026 17:33:51 GMT |
| Right ascension (J2000) | 156.18° |
| Declination (J2000) | 4.22° |
| Position error radius | 0.48° |
| GCN notices | 2 |
| GCN circulars | 2 |
Notices (1)
IceCube — NEUTRINO · Wed, 16 Sep 2026 17:33:51 GMT
GCN Circulars (2)
GCN-45615 — IceCube-260916A
· Thu, 17 Sep 2026 18:18:12 GMT
nap
GCN-45598 — IceCube-260916A
· Wed, 16 Sep 2026 19:30:30 GMT
On September 26, 2016, the IceCube Neutrino Observatory detected a high-energy neutrino candidate event with a moderate probability of being of astrophysical origin. The event, designated IceCube-260916A, was detected at 17:33:51.90 UT and had an estimated false alarm rate of 3.8028 events per year due to atmospheric backgrounds.
AI summary generated Tue, 22 Sep 2026 23:01:21 GMT.