[vsnet-grb-info 17347] Fermi GBM trigger 151221690 is not a GRB

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  18714
SUBJECT: Fermi GBM trigger 151221690 is not a GRB
DATE:    15/12/21 23:55:57 GMT
FROM:    Peter Jenke at MSFC  <peter.a.jenke at nasa.gov>

P. Jenke (UAH) reports on behalf of the Fermi GBM team:

"The Fermi Gamma-ray Burst Monitor (GBM) trigger 472408444/151221690
at 16:34:00.82 UT on the 21th of December 2015, tentatively classified 
as a GRB, is in fact not due to a GRB. This trigger is due to a 
local particles."