Location of GRB230321182

GRB Properties

Parameters calculated by MPE

Property	Value	Error (1 σ statistical)
Trigger Number	701065308
Trigger Time	March 21, 2023, 04:21:43
Data Timestamp	March 21, 2023, 04:30:54
Localization Timestamp	March 21, 2023, 04:42:32
Balrog Ra [deg]	65.2	1.5
Balrog Dec [deg]	31.7	1.3
Error radius 1 σ [deg]	1.9
Error radius 2 σ [deg]	3.0
Estimated systematic error [deg]	2
Fitted Model	cutoff_powerlaw
Spectral Parameter K [photons/cm^2/keV*s]	6.5	1
Spectral Parameter Index	-1.3	0.051
Spectral Parameter XC [keV]	3e+02	4e+01
Satellite Phi [deg]	51.95
Satellite Theta [deg]	40.35

Parameters from external Source

Property	Value
Swift Ra [deg]
Swift Dec [deg]
Most likely	GRB 64.0%
Second most likely	DISTANT_PARTICLES 31.0%

Download healpix file Download healpix file (with sys error)

GRB Location Alert

GRB 230321A: BALROG localization (Fermi Trigger 701065308 / GRB 230321182)

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
701065308 at 04:21:43 on 21 Mar. 2023 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) = 65.24+/-1.54 deg
Decl.(2000.0) = 31.70+/-1.26 deg
We estimate an additional systematic error of 2 deg.

Further details are available at:
https://grb.mpe.mpg.de/grb/GRB230321182/

The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB230321182/healpix

The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB230321182/json