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

GCN Circular 30952

Subject
GRB 211021A: BALROG localization (Fermi Trigger 656506979 / GRB 211021460)
Date
2021-10-21T12:02:57Z (3 years ago)
From
Jochen Greiner at MPE,Garching <jcg@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
656506979 at 11:02:54 on 21 Oct. 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) = 29.4+/-3.2 deg
Decl.(2000.0) = 27.2+/-2.1 deg
We estimate an additional systematic error of 1 deg.

Further details are available at:
https://grb.mpe.mpg.de/grb/GRB211021460/

The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB211021460/healpix

The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB211021460/json
Looking for U.S. government information and services? Visit USA.gov