GRB Properties
Parameters calculated by MPE
| Property | Value | Error (1 σ statistical) |
|---|---|---|
| Trigger Number | 651751821 | |
| Trigger Time | Aug. 27, 2021, 10:10:16 | |
| Data Timestamp | Aug. 27, 2021, 11:09:09 | |
| Localization Timestamp | Aug. 27, 2021, 11:14:48 | |
| Balrog Ra [deg] | 305.2 | 5.9 |
| Balrog Dec [deg] | -22.4 | 3.5 |
| Error radius 1 σ [deg] | 7.2 | |
| Error radius 2 σ [deg] | 8.1 | |
| Estimated systematic error [deg] | 1 | |
| Fitted Model | cutoff_powerlaw | |
| Spectral Parameter K [photons/cm^2/keV*s] | 15 | 4.1 |
| Spectral Parameter Index | -1.7 | 0.079 |
| Spectral Parameter XC [keV] | 3e+03 | 3e+03 |
| Satellite Phi [deg] | 151.15 | |
| Satellite Theta [deg] | 24.08 |
Parameters from external Source
| Property | Value |
|---|---|
| Swift Ra [deg] | |
| Swift Dec [deg] | |
| Most likely | GRB 94.0% |
| Second most likely | SGR_1806_20 3.0% |
GRB Location Alert
GRB 210827B: BALROG localization (Fermi Trigger 651751821 / GRB 210827424)
J. Burgess, F. Kunzweiler, B. Biltzinger, F. Berlato, & J. Greiner (all MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
651751821 at 10:10:16 on 27 Aug. 2021 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) = 305.1+/-2.9 deg
Decl.(2000.0) = -17.3+/-2.3 deg
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB210827424/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB210827424/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB210827424/json
J. Burgess, F. Kunzweiler, B. Biltzinger, F. Berlato, & J. Greiner (all MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
651751821 at 10:10:16 on 27 Aug. 2021 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) = 305.1+/-2.9 deg
Decl.(2000.0) = -17.3+/-2.3 deg
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB210827424/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB210827424/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB210827424/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
