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GCN Circular 45059

Subject
Fermi GBM trigger 804552016/260630945 is not a GRB
Date
2026-07-01T01:26:30Z (8 days ago)
From
rhamburg@usra.edu
Via
Web form
R. Hamburg (USRA) reports on behalf of the Fermi Gamma-ray Burst Monitor Team:

"The Fermi Gamma-ray Burst Monitor (GBM) trigger 804552016/260630945 at 22:40:11.17 UT on 30 June 2026, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is likely due to statistical fluctuations in opposite-facing detectors."
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