TITLE:   GCN CIRCULAR
NUMBER:  46127
SUBJECT: GRB 261101B: BALROG localization (Fermi Trigger 815240277 / GRB 261101651)
DATE:    26/11/01 16:00:44 GMT
FROM:    Jochen Greiner at MPE <jcgrog@mpe.mpg.de>

T. Preis (University of Innsbruck) & J. Greiner (MPE Garching) report:

The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
815240277 at 15:37:52 on 01 Nov. 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) = 316.3 deg
Decl.(2000.0) = 9.8 deg
The 1 sigma statistical error radius is 3.3 deg.
We estimate an additional systematic error of 2 deg.

Further details are available at:
https://grb.mpe.mpg.de/grb/GRB261101651/

The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB261101651/healpix

The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB261101651/json