GRB Properties
Parameters calculated by MPE
| Property | Value | Error (1 σ statistical) |
|---|---|---|
| Trigger Number | 765733706 | |
| Trigger Time | April 07, 2025, 15:48:21 | |
| Data Timestamp | April 07, 2025, 16:58:23 | |
| Localization Timestamp | April 07, 2025, 17:14:14 | |
| Balrog Ra [deg] | 111.6 | 0.5 |
| Balrog Dec [deg] | 36.4 | 1.2 |
| Error radius 1 σ [deg] | 3.5 | |
| Error radius 2 σ [deg] | 4.2 | |
| Estimated systematic error [deg] | 2 | |
| Fitted Model | cutoff_powerlaw | |
| Spectral Parameter K [photons/cm^2/keV*s] | 0.79 | 0.071 |
| Spectral Parameter Index | -0.62 | 0.02 |
| Spectral Parameter XC [keV] | 6e+02 | 2e+01 |
| Satellite Phi [deg] | -61.87 | |
| Satellite Theta [deg] | -26.17 |
Parameters from external Source
| Property | Value |
|---|---|
| Swift Ra [deg] | |
| Swift Dec [deg] | |
| Most likely | GRB 95.0% |
| Second most likely | DISTANT_PARTICLES 3.0% |
GRB Location Alert
To circulars@gcn.nasa.gov
GRB 250407A: BALROG localization (Fermi Trigger 765733706 / GRB 250407659)
T. Preis (University of Innsbruck) & J. Greiner (MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
765733706 at 15:48:21 on 07 April 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) = 111.6 deg
Decl.(2000.0) = 36.5 deg
The 1 sigma statistical error radius is 3.5 deg.
We estimate an additional systematic error of 2 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB250407659/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB250407659/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB250407659/json
GRB 250407A: BALROG localization (Fermi Trigger 765733706 / GRB 250407659)
T. Preis (University of Innsbruck) & J. Greiner (MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
765733706 at 15:48:21 on 07 April 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) = 111.6 deg
Decl.(2000.0) = 36.5 deg
The 1 sigma statistical error radius is 3.5 deg.
We estimate an additional systematic error of 2 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB250407659/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB250407659/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB250407659/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
