Skip to main content
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 22420

Fermi GBM triggers 540405116/180215689 and 540476225/180216512 are not a GRBs
2018-02-16T21:35:17Z (6 years ago)
Peter Veres at UAH <>
P. Veres (UAH) reports on behalf of the Fermi GBM Team:

"The Fermi Gamma-ray Burst Monitor (GBM) triggers

540405116/180215689 at 16:31:51.74 UT on 15 February 2018 and
540476225/180216512 at 12:17:00.52 UT on 16 February 2018

tentatively classified as a GRBs, are in fact not due to GRBs. These
triggers are due to particle activity."
Looking for U.S. government information and services? Visit