Location of GRB210328865

GRB Properties

Parameters calculated by MPE

Property	Value	Error (1 σ statistical)
Trigger Number	638657121
Trigger Time	March 28, 2021, 20:45:16
Data Timestamp	March 28, 2021, 22:13:10
Localization Timestamp	March 28, 2021, 22:17:32
Balrog Ra [deg]	208.5	7.7
Balrog Dec [deg]	-12.4	6.1
Error radius 1 σ [deg]	10.8
Error radius 2 σ [deg]	18.2
Estimated systematic error [deg]	1
Fitted Model	cutoff_powerlaw
Spectral Parameter K [photons/cm^2/keV*s]	0.32	0.29
Spectral Parameter Index	-0.18	0.47
Spectral Parameter XC [keV]	9e+01	4e+01
Satellite Phi [deg]	-160.68
Satellite Theta [deg]	9.29

Parameters from external Source

Property	Value
Swift Ra [deg]
Swift Dec [deg]
Most likely	GRB 95.0%
Second most likely	GENERIC_TRANSIENT 3.0%

Download healpix file Download healpix file (with sys error)

GRB Location Alert

GRB 210328A: BALROG localization (Fermi Trigger / GRB 210328865)

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
at 20:45:16 on 28 March 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) = 205.9+/-1.3 deg
Decl.(2000.0) = -11.4+/-1.5 deg
We estimate an additional systematic error of 1 deg.

Further details are available at:
https://grb.mpe.mpg.de/grb/GRB210328865/?data_version=h00

The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/media/data/GRB210328865/data_files/210328_211506727701_GRB210328865_healpix_trigdat_h00.fits

The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB210328865/json