GRB Properties
Parameters calculated by MPE
| Property | Value | Error (1 σ statistical) |
|---|---|---|
| Trigger Number | 785190695 | |
| Trigger Time | Nov. 18, 2025, 20:31:30 | |
| Data Timestamp | Nov. 18, 2025, 21:32:50 | |
| Localization Timestamp | Nov. 18, 2025, 21:46:10 | |
| Balrog Ra [deg] | 160.1 | 2.5 |
| Balrog Dec [deg] | -34.8 | 0.6 |
| Error radius 1 σ [deg] | 2.0 | |
| Error radius 2 σ [deg] | 2.3 | |
| Estimated systematic error [deg] | 2 | |
| Fitted Model | cutoff_powerlaw | |
| Spectral Parameter K [photons/cm^2/keV*s] | 5.1e+02 | 23 |
| Spectral Parameter Index | -2.3 | 0.013 |
| Spectral Parameter XC [keV] | 8e+03 | 3e+03 |
| Satellite Phi [deg] | 64.69 | |
| Satellite Theta [deg] | 20.82 |
Parameters from external Source
| Property | Value |
|---|---|
| Swift Ra [deg] | |
| Swift Dec [deg] | |
| Most likely | GRB 98.0% |
| Second most likely | GENERIC_TRANSIENT 1.0% |
GRB Location Alert
To circulars@gcn.nasa.gov
GRB 251118A: BALROG localization (Fermi Trigger 785190695 / GRB 251118855)
T. Preis (University of Innsbruck) & J. Greiner (MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
785190695 at 20:31:30 on 18 Nov. 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) = 160.0 deg
Decl.(2000.0) = -34.9 deg
The 1 sigma statistical error radius is 2.0 deg.
We estimate an additional systematic error of 2 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB251118855/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB251118855/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB251118855/json
GRB 251118A: BALROG localization (Fermi Trigger 785190695 / GRB 251118855)
T. Preis (University of Innsbruck) & J. Greiner (MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
785190695 at 20:31:30 on 18 Nov. 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) = 160.0 deg
Decl.(2000.0) = -34.9 deg
The 1 sigma statistical error radius is 2.0 deg.
We estimate an additional systematic error of 2 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB251118855/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB251118855/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB251118855/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
