TITLE: GCN CIRCULAR NUMBER: 17985 SUBJECT: Fermi Gamma-ray Burst Monitor Trigger 150626873 is not a GRB DATE: 15/06/30 16:15:56 GMT FROM: Eric Burns at U of Alabama "The Fermi Gamma-ray Burst Monitor (GBM) trigger 150626873/457045019 at 20:56:56.92 UT on 26 June 2015, tentatively classified as a GRB, is in fact not due to a GRB. This trigger is due to particle activity.”