GCN Circular 45287
Subject
GRB 260805B: BALROG localization (Fermi Trigger 807622617 / GRB 260805484)
Event
Date
2026-08-05T12:19:46Z (20 days ago)
From
Jochen Greiner at MPE <jcgrog@mpe.mpg.de>
Via
email
T. Preis (University of Innsbruck) & J. Greiner (MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
807622617 at 11:36:52 on 05 Aug. 2026 were automatically fitted for spectrum
and sky location with BALROG (Burgess et al. 2018, MNRAS 476, 1427;
Berlato et al. 2019, ApJ 873, 60).
The best-fit position is:
RA(2000.0) = 255.8 deg
Decl.(2000.0) = 67.9 deg
The 1 sigma statistical error radius is 2.9 deg.
We estimate an additional systematic error of 2 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB260805484/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB260805484/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB260805484/json