GCN Circular 40706
Subject
GRB 250612C: BALROG localization (Fermi Trigger 771432801 / GRB 250612620)
Date
2025-06-12T15:19:24Z (4 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
771432801 at 14:53:16 on 12 June 2025 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) = 118.9 deg
Decl.(2000.0) = 18.8 deg
The 1 sigma statistical error radius is 1.1 deg.
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB250612620/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB250612620/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB250612620/json