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

GCN Circular 21361

Fermi GBM trigger 522334209/170721535 is not a GRB
2017-07-23T00:28:16Z (7 years ago)
Oliver J Roberts at USRA/NASA <>
O.J. Roberts (USRA) reports on behalf of the Fermi GBM Team:

"The Fermi Gamma-ray Burst Monitor (GBM) trigger 522334209/170721535
at 12:50:04.518 UT on 21 July 2017, tentatively classified as a GRB,
is in fact not due to a GRB. This trigger is due to local particles."
Looking for U.S. government information and services? Visit