TITLE:   GCN CIRCULAR
NUMBER:  29796
SUBJECT: GRB 210411D: BALROG localization (Fermi Trigger 639851475 / GRB 210411688)
DATE:    21/04/11 16:59:18 GMT
FROM:    Jochen Greiner at MPI  <jcg@mpe.mpg.de>

F. Kunzweiler, B. Biltzinger, F. Berlato, J. Burgess & J. Greiner (all MPE Garching) report:

The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
 at 16:31:10 on 11 Apr. 2021 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 (1 sigma statistical errors) is:
RA(2000.0) = 340.7+/-4.8 deg
Decl.(2000.0) = 36.6+/-3.2 deg
We estimate an additional systematic error of 2 deg.

Further details are available at:
https://grb.mpe.mpg.de/grb/GRB210411688/

The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB210411688/healpix

The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB210411688/json