TITLE: GCN CIRCULAR NUMBER: 17983 SUBJECT: Fermi Gamma-ray Burst Monitor trigger bn150629779 is not a GRB DATE: 15/06/29 19:46:26 GMT FROM: George A. Younes at George Washington U G. Younes (GWU) reports on behalf of the Fermi GBM Team: "The Fermi Gamma-ray Burst Monitor (GBM) trigger bn150629779 at 18:41:34.97 UT on 29 June 2015, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is due to particle activity."