{
  "createdOn": 1755806245359,
  "eventId": "GRB 250821B",
  "body": "T. Preis (University of Innsbruck) & J. Greiner (MPE Garching) report:\n\nThe public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger\n at 16:07:47 on 21 Aug. 2025 were manually fitted for spectrum\nand sky location with BALROG (Burgess et al. 2018, MNRAS 476, 1427;\nBerlato et al. 2019, ApJ 873, 60).\n\nThe best-fit position is:\nRA(2000.0) = 60.0 deg\nDecl.(2000.0) = -84.7 deg\nThe 1 sigma statistical error radius is 2.0 deg.\nWe estimate an additional systematic error of 2 deg.\n\nFurther details are available at:\nhttps://grb.mpe.mpg.de/grb/GRB250821672/\n\nThe Healpix map can be downloaded from:\nhttps://grb.mpe.mpg.de/grb/GRB250821672/healpix\n\nThe location parameters are available as JSON at:\nhttps://grb.mpe.mpg.de/grb/GRB250821672/json\n\n                        \n",
  "submitter": "Jochen Greiner at MPE <jcgrog@mpe.mpg.de>",
  "circularId": 41475,
  "subject": "GRB 250821B: BALROG localization (Fermi Trigger  / GRB 250821672)",
  "bibcode": "2025GCN.41475....1P",
  "submittedHow": "email"
}