This is the Analysis page for GRB200125864: GRB200125864

Version History of Data Files: tte 1 0

GRB Properties

Parameters calculated by MPE

Property Value Error (1 σ statistical)
Trigger Number 601677816
Trigger Time Jan. 25, 2020, 20:43:31
Data Timestamp Jan. 25, 2020, 21:46:27
Localization Timestamp Jan. 25, 2020, 22:17:01
Balrog Ra [deg] 7.7 0.8
Balrog Dec [deg] 64.4 0.4
Error radius 1 σ [deg] 0.5
Error radius 2 σ [deg] 0.7
Estimated systematic error [deg] 2
Fitted Model cutoff_powerlaw
Spectral Parameter K [photons/cm^2/keV*s] 31 0.98
Spectral Parameter Index -1.2 0.0095
Spectral Parameter XC [keV] 3e+02 1e+01
Satellite Phi [deg] 81.03
Satellite Theta [deg] 24.78

Parameters from external Source

Property Value
Swift Ra [deg]
Swift Dec [deg]
Most likely 95%: GRB
Second most likely 3%: GenericTransient

GRB Location Alert

GRB 200125B: BALROG localization (Fermi Trigger 601677816 / GRB 200125864)

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
601677816 at 20:43:31 on 25 Jan. 2020 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) = 7.7+/-0.8 deg
Decl.(2000.0) = 64.4+/-0.4 deg
We estimate an additional systematic error of 2 deg.

Further details are available at:

The Healpix map can be downloaded from:

The location parameters are available as JSON at:

GRB Location

J2000 Coordinate Frame

All Corner Plot

J2000 Coordinate Frame

Moll Location Plot

J2000 Coordinate Frame


Spectrum Residuals Plot

3D - GRB Location Plot

Satellite Coordiante Frame

Light Curves

Lightcurve detector b0
Lightcurve detector b1
Lightcurve detector n0
Lightcurve detector n1
Lightcurve detector n2
Lightcurve detector n3
Lightcurve detector n4
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Lightcurve detector n6
Lightcurve detector n7
Lightcurve detector n8
Lightcurve detector n9
Lightcurve detector na
Lightcurve detector nb