GRB Properties
Parameters calculated by MPE
| Property | Value | Error (1 σ statistical) |
|---|---|---|
| Trigger Number | 769703188 | |
| Trigger Time | May 23, 2025, 14:26:23 | |
| Data Timestamp | May 23, 2025, 14:35:35 | |
| Localization Timestamp | May 23, 2025, 22:36:39 | |
| Balrog Ra [deg] | 64.9 | 1.8 |
| Balrog Dec [deg] | 53.1 | 1.3 |
| Error radius 1 σ [deg] | 2.5 | |
| Error radius 2 σ [deg] | 3.7 | |
| Estimated systematic error [deg] | 1 | |
| Fitted Model | band_function | |
| Spectral Parameter K [photons/cm^2/keV*s] | 0.031 | 0.0064 |
| Spectral Parameter Alpha | -0.71 | 0.12 |
| Spectral Parameter Beta | -2.4 | 0.2 |
| Spectral Parameter XP | 1.1e+02 | 7.7 |
| Satellite Phi [deg] | -11.02 | |
| Satellite Theta [deg] | 53.47 |
Parameters from external Source
| Property | Value |
|---|---|
| Swift Ra [deg] | |
| Swift Dec [deg] | |
| Most likely | GRB 94.0% |
| Second most likely | SOLAR_FLARE 3.0% |
GRB Location Alert
To circulars@gcn.nasa.gov
GRB 250523A: BALROG localization (Fermi Trigger 769703188 / GRB 250523602)
T. Preis (University of Innsbruck) & J. Greiner (MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
769703188 at 14:26:23 on 23 May 2025 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 is:
RA(2000.0) = 64.4 deg
Decl.(2000.0) = 53.7 deg
The 1 sigma statistical error radius is 2.9 deg.
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB250523602/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB250523602/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB250523602/json
GRB 250523A: BALROG localization (Fermi Trigger 769703188 / GRB 250523602)
T. Preis (University of Innsbruck) & J. Greiner (MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
769703188 at 14:26:23 on 23 May 2025 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 is:
RA(2000.0) = 64.4 deg
Decl.(2000.0) = 53.7 deg
The 1 sigma statistical error radius is 2.9 deg.
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB250523602/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB250523602/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB250523602/json
GRB Location
J2000 Coordinate Frame
All Corner Plot
J2000 Coordinate Frame
Moll Location Plot
J2000 Coordinate Frame
Satellite
Spectrum Residuals Plot
3D - GRB Location Plot
Satellite Coordiante Frame
Light Curves
