Skip to main content
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 36047

GRB 240407A: BALROG localization (Fermi Trigger 734144396 / GRB 240407042)
2024-04-07T10:10:49Z (a month ago)
Jochen Greiner at MPE <>
T. Preis, B. Biltzinger, J. Burgess & J. Greiner (all MPE Garching) report:

The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
734144396 at 00:59:51 on 07 April 2024 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) = 347.0 deg
Decl.(2000.0) = 43.9 deg
The 1 sigma statistical error radius is 1.9 deg.
We estimate an additional systematic error of 1 deg.

Further details are available at:

The Healpix map can be downloaded from:

The location parameters are available as JSON at:


Looking for U.S. government information and services? Visit