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GCN Circular 22667

Subject
Fermi GBM trigger 545979055/180421202 is not a GRB
Date
2018-04-21T14:36:22Z (7 years ago)
From
Andreas von Kienlin at MPE <azk@mpe.mpg.de>
A. von Kienlin (MPE) reports on behalf of the Fermi GBM Team: 

 "The Fermi Gamma-ray Burst Monitor (GBM) trigger 545979055/180421202 at 04:50:50.91 UT 
on 21 April 2018, tentatively classified as a GRB, is in fact not due to a GRB. 
This trigger is due to local particles."
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