Fermi-GBM Observations of the reactivation of SGR 1E 1841-045 / Kes 73
ATel #16786; O. J. Roberts (USRA), P. Veres (UAH), C. de Barra (UCD), P. McDermott (UCD), S. Dalessi (UAH) on behalf of the GBM Team
on 22 Aug 2024; 22:00 UT
Credential Certification: Oliver Roberts (oliver.roberts@nasa.gov)
Subjects: X-ray, Gamma Ray, Soft Gamma-ray Repeater, Pulsar
"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 list of SGR bursts at the time of writing is:
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 / ATel #16784)
2024-08-21T12:16:10.19 745935375 (Reported by Swift, GCN #37222 / ATel #16784)
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 / ATel #16784)
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/"
