TITLE: GCN CIRCULAR NUMBER: 42889 SUBJECT: Swift trigger 1418333 is not an astrophysical source DATE: 25/11/29 11:24:27 GMT FROM: K.L. Page at U Leicester R. Gupta (NASA GSFC), N. P. M. Kuin (UCL-MSSL), K. L. Page (U Leicester) and T. M. Parsotan (GSFC) report on behalf of the Neil Gehrels Swift Observatory Team: Trigger 1418333 was caused by particles in the South Atlantic Anomaly, and is not an interesting, astrophysical event.