GCN Circular 32635
Subject
GRB 221009A: Swift detected transient may be GRB
Event
Date
2022-10-09T20:44:25Z (3 years ago)
From
Jamie Kennea at Penn State U <jak51@psu.edu>
J. A. Kennea and M. Williams (PSU) report on behalf of the Swift Team:
We provide an update on the BAT trigger 1126853, AKA Swift J1913.1+1946
(GCN #32632). Examination of XRT data from this trigger shows strong
fading. We also note that Fermi/LAT has triggered on the same location.
There is also a possible association with a Fermi/GBM trigger @
13:16:59UT. Given this, we believe that this source is now likely a
Gamma-Ray Burst and not a Galactic Transient. If the GBM trigger is the
same source, this would suggest a highly energetic outburst, and therefore
we strongly encourage follow-up of this usual event.