GRB Properties
Parameters calculated by MPE
| Property | Value | Error (1 σ statistical) |
|---|---|---|
| Trigger Number | 789348101 | |
| Trigger Time | Jan. 05, 2026, 23:21:36 | |
| Data Timestamp | Jan. 06, 2026, 01:36:38 | |
| Localization Timestamp | Jan. 06, 2026, 01:59:13 | |
| Balrog Ra [deg] | 258.7 | 1.2 |
| Balrog Dec [deg] | 7.9 | 1.1 |
| Error radius 1 σ [deg] | 2.1 | |
| Error radius 2 σ [deg] | 4.3 | |
| Estimated systematic error [deg] | 1 | |
| Fitted Model | cutoff_powerlaw | |
| Spectral Parameter K [photons/cm^2/keV*s] | 6.4 | 0.76 |
| Spectral Parameter Index | -1.1 | 0.037 |
| Spectral Parameter XC [keV] | 3e+02 | 3e+01 |
| Satellite Phi [deg] | 38.59 | |
| Satellite Theta [deg] | 20.56 |
Parameters from external Source
| Property | Value |
|---|---|
| Swift Ra [deg] | |
| Swift Dec [deg] | |
| Most likely | GRB 95.0% |
| Second most likely | DISTANT_PARTICLES 1.0% |
GRB Location Alert
To circulars@gcn.nasa.gov
GRB 260105B: BALROG localization (Fermi Trigger 789348101 / GRB 260105973)
T. Preis (University of Innsbruck) & J. Greiner (MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
789348101 at 23:21:36 on 05 Jan. 2026 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) = 258.7 deg
Decl.(2000.0) = 7.9 deg
The 1 sigma statistical error radius is 2.1 deg.
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB260105973/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB260105973/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB260105973/json
GRB 260105B: BALROG localization (Fermi Trigger 789348101 / GRB 260105973)
T. Preis (University of Innsbruck) & J. Greiner (MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
789348101 at 23:21:36 on 05 Jan. 2026 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) = 258.7 deg
Decl.(2000.0) = 7.9 deg
The 1 sigma statistical error radius is 2.1 deg.
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB260105973/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB260105973/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB260105973/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
