TITLE: GCN CIRCULAR NUMBER: 43176 SUBJECT: Fermi Gamma-ray Burst Monitor trigger 788028118/251221696 is not a GRB DATE: 25/12/21 22:01:00 GMT FROM: Bagrat Mailyan at Florida Tech <mbagrat@gmail.com> B. Mailyan (Florida Tech) reports on behalf of the Fermi Gamma-ray Burst Monitor Team: "The Fermi Gamma-ray Burst Monitor (GBM) trigger 788028118/251221696 at 16:41:53.69 UT on 21 December 2025, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is likely due to particle activity." View this GCN Circular online at https://gcn.nasa.gov/circulars/43176. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...