STARITHM
IceCube detects high-energy neutrino track with moderate astrophysical probability
AI Summary
On 2026-09-16 at 17:33:51.90 UT, the IceCube Neutrino Observatory detected a track-like event with an estimated neutrino energy of ~115 GeV and a false alarm rate of 1.205e-7 (3.8 events/year). The event has a 29% probability of astrophysical origin (p_astro=0.2905) with refined localization to RA=156.18°, Dec=4.22° (90% containment radius ~0.5°). Offline reconstruction algorithms refined the initial alert parameters, and the event was selected by the Bronze Track Alert pipeline, indicating moderate but not exceptional astrophysical significance.
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 | 1 |
Notices (1)
IceCube — NEUTRINO · Wed, 16 Sep 2026 17:33:51 GMT
GCN Circulars (1)
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 Wed, 16 Sep 2026 22:39:23 GMT.