Location of GRB210120299

GRB Properties

Parameters calculated by MPE

Property	Value	Error (1 σ statistical)
Trigger Number	632819449
Trigger Time	Jan. 20, 2021, 07:10:44
Data Timestamp	Jan. 20, 2021, 07:20:04
Localization Timestamp	Jan. 20, 2021, 11:53:13
Balrog Ra [deg]	161.7	1.3
Balrog Dec [deg]	14.1	1.8
Error radius 1 σ [deg]	2.8
Error radius 2 σ [deg]	4.3
Estimated systematic error [deg]	1
Fitted Model	band_function
Spectral Parameter K [photons/cm^2/keV*s]	0.0048	0.00014
Spectral Parameter Alpha	-1.2	0.021
Spectral Parameter Beta	-1.6	0.024
Spectral Parameter XP	8.8e+03	9.6e+02
Satellite Phi [deg]	156.12
Satellite Theta [deg]	8.57

Parameters from external Source

Property	Value
Swift Ra [deg]
Swift Dec [deg]
Most likely	GRB 96.0%
Second most likely	GENERIC_TRANSIENT 3.0%

GRB Location Alert

GRB 210120A: BALROG localization (Fermi Trigger 632819449 / GRB 210120299)

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
632819449 at 07:10:44 on 20 Jan. 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) = 163.5+/-2.8 deg
Decl.(2000.0) = 17.0+/-2.2 deg
We estimate an additional systematic error of 1 deg.

Further details are available at:
https://grb.mpe.mpg.de/grb/GRB210120299/

The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB210120299/healpix

The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB210120299/json