TITLE: GCN CIRCULAR NUMBER: 9791 SUBJECT: Fermi Gamma-ray Burst Monitor trigger 271446248 is not a GRB DATE: 09/08/13 16:39:11 GMT FROM: Vandiver Chaplin at UAH/Fermi-GBM V. Chaplin (UAH) reports on behalf of the Fermi GBM Team: "The Fermi Gamma-ray Burst Monitor (GBM) trigger 271446248 (trigcat 090808739) at 17:44:09.60 UT on 8 August 2009, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is due to a Terrestrial Gamma-Ray Flash (TGF)."