GRB Properties
Parameters calculated by MPE
| Property | Value | Error (1 σ statistical) |
|---|---|---|
| Trigger Number | 783314796 | |
| Trigger Time | Oct. 28, 2025, 03:26:31 | |
| Data Timestamp | Oct. 28, 2025, 06:11:46 | |
| Localization Timestamp | Oct. 28, 2025, 06:20:54 | |
| Balrog Ra [deg] | 145.8 | 1.5 |
| Balrog Dec [deg] | 17.4 | 1.2 |
| Error radius 1 σ [deg] | 2.5 | |
| Error radius 2 σ [deg] | 4.3 | |
| Estimated systematic error [deg] | 2 | |
| Fitted Model | cutoff_powerlaw | |
| Spectral Parameter K [photons/cm^2/keV*s] | 4.8 | 1.1 |
| Spectral Parameter Index | -1.2 | 0.057 |
| Spectral Parameter XC [keV] | 4e+02 | 8e+01 |
| Satellite Phi [deg] | 86.83 | |
| Satellite Theta [deg] | 40.35 |
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
To circulars@gcn.nasa.gov
GRB 251028A: BALROG localization (Fermi Trigger 783314796 / GRB 251028143)
T. Preis (University of Innsbruck) & J. Greiner (MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
783314796 at 03:26:31 on 28 Oct. 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) = 145.7 deg
Decl.(2000.0) = 16.8 deg
The 1 sigma statistical error radius is 2.1 deg.
We estimate an additional systematic error of 2 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB251028143/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB251028143/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB251028143/json
GRB 251028A: BALROG localization (Fermi Trigger 783314796 / GRB 251028143)
T. Preis (University of Innsbruck) & J. Greiner (MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
783314796 at 03:26:31 on 28 Oct. 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) = 145.7 deg
Decl.(2000.0) = 16.8 deg
The 1 sigma statistical error radius is 2.1 deg.
We estimate an additional systematic error of 2 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB251028143/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB251028143/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB251028143/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
