Skip to main content
New Swift-BAT/GUANO and IceCube Notice Types Available! See news and announcements

GCN Circular 34502

Swift Triggers 1186280 and 1186291 are not GRBs
2023-08-20T19:24:01Z (6 months ago)
David Palmer at LANL <>

S. Dichiara (PSU), J.D. Gropp (PSU), N. P. M. Kuin (UCL-MSSL),
F. E. Marshall (NASA/GSFC), B. Sbarufatti (INAF-OAB) and
M. A. Williams (PSU) report on behalf of the Neil Gehrels Swift
Observatory Team:

Swift BAT triggers 1186280 and 1186291, at 18:28:34 and 19:09:36 
respectively on 2023-08-20 UT, were due to misidentification
of known sources (Sco X-1 and the Crab) during a star tracker
loss-of-lock event.  They are not astrophysical events. 

Looking for U.S. government information and services? Visit