GRB Properties
Parameters calculated by MPE
| Property | Value | Error (1 σ statistical) |
|---|---|---|
| Trigger Number | 715526984 | |
| Trigger Time | Sept. 04, 2023, 13:29:39 | |
| Data Timestamp | Sept. 04, 2023, 15:07:09 | |
| Localization Timestamp | Sept. 04, 2023, 15:52:20 | |
| Balrog Ra [deg] | 20.9 | 3.4 |
| Balrog Dec [deg] | -26.6 | 0.9 |
| Error radius 1 σ [deg] | 3.4 | |
| Error radius 2 σ [deg] | 2.9 | |
| Estimated systematic error [deg] | 2 | |
| Fitted Model | cutoff_powerlaw | |
| Spectral Parameter K [photons/cm^2/keV*s] | 5 | 0.69 |
| Spectral Parameter Index | -1.1 | 0.042 |
| Spectral Parameter XC [keV] | 2e+02 | 2e+01 |
| Satellite Phi [deg] | 134.59 | |
| Satellite Theta [deg] | 36.61 |
Parameters from external Source
| Property | Value |
|---|---|
| Swift Ra [deg] | |
| Swift Dec [deg] | |
| Most likely | UNRELIABLE_LOCATION 100.0% |
| Second most likely | ERROR 0.0% |
GRB Location Alert
To circulars@gcn.nasa.gov
GRB 230904B: BALROG localization (Fermi Trigger 715526984 / GRB 230904562)
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
715526984 at 13:29:39 on 04 Sept. 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) = 20.8+/-2.4 deg
Decl.(2000.0) = -26.7+/-0.9 deg
We estimate an additional systematic error of 2 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB230904562/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB230904562/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB230904562/json
GRB 230904B: BALROG localization (Fermi Trigger 715526984 / GRB 230904562)
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
715526984 at 13:29:39 on 04 Sept. 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) = 20.8+/-2.4 deg
Decl.(2000.0) = -26.7+/-0.9 deg
We estimate an additional systematic error of 2 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB230904562/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB230904562/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB230904562/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
