TITLE: GCN CIRCULAR NUMBER: 36607 SUBJECT: GRB 240603C: BALROG localization (Fermi Trigger 739102156 / GRB 240603423) DATE: 24/06/03 10:59:23 GMT FROM: Jochen Greiner at MPE jcgrog@mpe.mpg.de

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 739102156 at 10:09:11 on 03 June 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) = 275.5 deg Decl.(2000.0) = -35.3 deg The 1 sigma statistical error radius is 2.5 deg. We estimate an additional systematic error of 1 deg.

Further details are available at: https://grb.mpe.mpg.de/grb/GRB240603423/

The Healpix map can be downloaded from: https://grb.mpe.mpg.de/grb/GRB240603423/healpix

The location parameters are available as JSON at: https://grb.mpe.mpg.de/grb/GRB240603423/json

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