[vsnet-grb-info 26718] GRB 201031B: BALROG localization (Fermi Trigger 625859489 / GRB 201031744)

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  28816
SUBJECT: GRB 201031B: BALROG localization (Fermi Trigger 625859489 / GRB 201031744)
DATE:    20/10/31 18:25:47 GMT
FROM:    Jochen Greiner at MPE,Garching  <jcg at mpe.mpg.de>

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

The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
625859489 at 17:51:24 on 31 Oct. 2020 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) = 47.9+/-6.1 deg
Decl.(2000.0) = 42.0+/-6.2 deg
We estimate an additional systematic error of 1 deg.

Further details are available at:
https://grb.mpe.mpg.de/grb/GRB201031744/

The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB201031744/healpix

The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB201031744/json