GRB Properties
Parameters calculated by MPE
| Property | Value | Error (1 σ statistical) |
|---|---|---|
| Trigger Number | 713966581 | |
| Trigger Time | Aug. 17, 2023, 12:02:56 | |
| Data Timestamp | Aug. 17, 2023, 15:08:06 | |
| Localization Timestamp | Aug. 17, 2023, 15:59:16 | |
| Balrog Ra [deg] | 324.7 | 0.9 |
| Balrog Dec [deg] | 16.9 | 0.9 |
| Error radius 1 σ [deg] | 2.1 | |
| Error radius 2 σ [deg] | 2.8 | |
| Estimated systematic error [deg] | 1 | |
| Fitted Model | cutoff_powerlaw | |
| Spectral Parameter K [photons/cm^2/keV*s] | 2.8 | 0.59 |
| Spectral Parameter Index | -1 | 0.059 |
| Spectral Parameter XC [keV] | 2e+02 | 4e+01 |
| Satellite Phi [deg] | 175.59 | |
| Satellite Theta [deg] | -5.39 |
Parameters from external Source
| Property | Value |
|---|---|
| Swift Ra [deg] | |
| Swift Dec [deg] | |
| Most likely | GRB 92.0% |
| Second most likely | CYG_X1 5.0% |
GRB Location Alert
To circulars@gcn.nasa.gov
GRB 230817A: BALROG localization (Fermi Trigger 713966581 / GRB 230817502)
T. Preis, B. Biltzinger, J. Burgess & J. Greiner (all MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
713966581 at 12:02:56 on 17 Aug. 2023 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 (1 sigma statistical errors) is:
RA(2000.0) = 324.8+/-1.0 deg
Decl.(2000.0) = 17.0+/-0.9 deg
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB230817502/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB230817502/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB230817502/json
GRB 230817A: BALROG localization (Fermi Trigger 713966581 / GRB 230817502)
T. Preis, B. Biltzinger, J. Burgess & J. Greiner (all MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
713966581 at 12:02:56 on 17 Aug. 2023 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 (1 sigma statistical errors) is:
RA(2000.0) = 324.8+/-1.0 deg
Decl.(2000.0) = 17.0+/-0.9 deg
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB230817502/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB230817502/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB230817502/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
