TITLE: GCN CIRCULAR NUMBER: 41137 SUBJECT: Swift-BAT trigger 1334535 is not a GRB DATE: 25/07/22 14:22:25 GMT FROM: Mike Moss at NASA GSFC mikejmoss3@gmail.com

M. Moss (GSFC) on behalf of the Swift-BAT team:

The Swift-BAT trigger (trigger=1334535) at 00:14:02 UT on 18 Aug 2025 is not a GRB. All photons in the peak are simultaneous within the 100 us timing of the detector plane. This is indicative of a cosmic ray shower.

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