TITLE:   GCN CIRCULAR
NUMBER:  37234
SUBJECT: Fermi-GBM Observations of the reactivation of SGR 1E 1841-045 / Kes 73
DATE:    24/08/22 18:45:55 GMT
FROM:    Oliver J Roberts at USRA/NASA <oliver.roberts@nasa.gov>

O.J. Roberts (USRA/NASA-MSFC), P. Veres (UAH), C. de Barra (UCD), P. McDermott (UCD), 
S. Dalessi (UAH), on behalf of the GBM Team. 

"The Fermi Gamma-ray Burst Monitor (GBM) trigger 240821394/ 745925274
at 09:27:49.83 UT on 21st August 2024, tentatively classified as a GRB,
is in fact not due to a GRB. This trigger is due to 1E 1841-045 / Kes 73.

Additionally, Fermi-GBM trigger 240821366/745922867 at 08:47:42.97 UT on the 
21st of August, tentatively classified as a GRB is also believed to be 
from 1E 1841-045 / Kes 73.

Fermi-GBM has triggered on 8 bursts from the direction of this source since 
its reactivation on August 20th 2024. 

The SGR bursts from this source at the time of writing are:

Date and Time in UTC        Fermi MET (s)
2024-08-22T11:36:36.13       746019401
2024-08-21T20:29:24.33       745964969		(Reported by Swift, GCN 37222)
2024-08-21T12:16:10.19       745935375		(Reported by Swift, GCN 37222)
2024-08-21T09:27:49.83       745925274
2024-08-21T09:07:06.82       745924031
2024-08-21T08:47:42.97       745922867
2024-08-20T19:01:18.89       745873283		(Reported by Swift, GCN 37222)
2024-08-20T18:39:13.66       745871958

There are likely more bursts in the sub-threshold GBM data since the reactivation of this source.

Bursting activity from this source is continuing. 

We encourage multi-wavelength observations to follow-up this most recent activation.

For Fermi GBM data and info, please visit the official Fermi GBM Support Page:
https://fermi.gsfc.nasa.gov/ssc/data/access/gbm/"