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GCN Circular 20326

Subject
Fermi GBM trigger 504043585/161221838 is not a GRB
Date
2016-12-21T20:26:09Z (7 years ago)
From
Matthew Stanbro at UAH/Fermi <mcs0001@uah.edu>
M. Stanbro (UAH) reports on behalf of the Fermi GBM Team:

"The Fermi Gamma-ray Burst Monitor (GBM) trigger
504043585/161221838 at 20:06:21.07 UT on 21 December 2016,
tentatively classified as a GRB, is in fact not due to a GRB.
This trigger is due to local particles."
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