[vsnet-grb-info 20569] Fermi GBM trigger 545979055/180421202 is not a GRB

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  22667
SUBJECT: Fermi GBM trigger 545979055/180421202 is not a GRB
DATE:    18/04/21 14:36:22 GMT
FROM:    Andreas von Kienlin at MPE  <azk at 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."