GRB Properties
Parameters calculated by MPE
| Property | Value | Error (1 σ statistical) |
|---|---|---|
| Trigger Number | 779223130 | |
| Trigger Time | Sept. 10, 2025, 18:52:05 | |
| Data Timestamp | Sept. 10, 2025, 19:01:20 | |
| Localization Timestamp | Sept. 10, 2025, 19:12:15 | |
| Balrog Ra [deg] | 74.2 | 3.2 |
| Balrog Dec [deg] | -47.5 | 1.4 |
| Error radius 1 σ [deg] | 3.6 | |
| Error radius 2 σ [deg] | 6.1 | |
| Estimated systematic error [deg] | 1 | |
| Fitted Model | cutoff_powerlaw | |
| Spectral Parameter K [photons/cm^2/keV*s] | 0.24 | 0.14 |
| Spectral Parameter Index | -0.48 | 0.14 |
| Spectral Parameter XC [keV] | 1e+02 | 3e+01 |
| Satellite Phi [deg] | -27.30 | |
| Satellite Theta [deg] | 58.49 |
Parameters from external Source
| Property | Value |
|---|---|
| Swift Ra [deg] | |
| Swift Dec [deg] | |
| Most likely | GRB 97.0% |
| Second most likely | GENERIC_TRANSIENT 2.0% |
GRB Location Alert
To circulars@gcn.nasa.gov
GRB 250910B: BALROG localization (Fermi Trigger 779223130 / GRB 250910786)
T. Preis (University of Innsbruck) & J. Greiner (MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
779223130 at 18:52:05 on 10 Sept. 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) = 74.2 deg
Decl.(2000.0) = -47.5 deg
The 1 sigma statistical error radius is 3.6 deg.
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB250910786/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB250910786/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB250910786/json
GRB 250910B: BALROG localization (Fermi Trigger 779223130 / GRB 250910786)
T. Preis (University of Innsbruck) & J. Greiner (MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
779223130 at 18:52:05 on 10 Sept. 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) = 74.2 deg
Decl.(2000.0) = -47.5 deg
The 1 sigma statistical error radius is 3.6 deg.
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB250910786/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB250910786/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB250910786/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
