Location of GRB210511477

GRB Properties

Parameters calculated by MPE

Property	Value	Error (1 σ statistical)
Trigger Number	642425204
Trigger Time	May 11, 2021, 11:26:39
Data Timestamp	May 11, 2021, 11:36:02
Localization Timestamp	May 11, 2021, 11:45:04
Balrog Ra [deg]	314.1	1.4
Balrog Dec [deg]	56.3	0.6
Error radius 1 σ [deg]	1.1
Error radius 2 σ [deg]	2.4
Estimated systematic error [deg]	1
Fitted Model	cutoff_powerlaw
Spectral Parameter K [photons/cm^2/keV*s]	6.3	0.67
Spectral Parameter Index	-1	0.034
Spectral Parameter XC [keV]	1e+02	8
Satellite Phi [deg]	-31.43
Satellite Theta [deg]	40.95

Parameters from external Source

Property	Value
Swift Ra [deg]
Swift Dec [deg]
Most likely	GRB 91.0%
Second most likely	CYG_X1 7.0%

Download healpix file Download healpix file (with sys error)

GRB Location Alert

GRB 210511B: BALROG localization (Fermi Trigger 642425204 / GRB 210511477)

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

The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
642425204 at 11:26:39 on 11 May 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) = 314.1+/-1.4 deg
Decl.(2000.0) = 56.3+/-0.6 deg
We estimate an additional systematic error of 1 deg.

Further details are available at:
https://grb.mpe.mpg.de/grb/GRB210511477/

The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB210511477/healpix

The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB210511477/json