GRB Properties
Parameters calculated by MPE
| Property | Value | Error (1 σ statistical) |
|---|---|---|
| Trigger Number | 641192237 | |
| Trigger Time | April 27, 2021, 04:57:12 | |
| Data Timestamp | April 27, 2021, 05:06:31 | |
| Localization Timestamp | April 27, 2021, 07:42:55 | |
| Balrog Ra [deg] | 172.6 | 2.5 |
| Balrog Dec [deg] | -54.4 | 1.7 |
| Error radius 1 σ [deg] | 2.8 | |
| Error radius 2 σ [deg] | 4.2 | |
| Estimated systematic error [deg] | 1 | |
| Fitted Model | cutoff_powerlaw | |
| Spectral Parameter K [photons/cm^2/keV*s] | 0.026 | 0.017 |
| Spectral Parameter Index | -0.053 | 0.17 |
| Spectral Parameter XC [keV] | 2e+02 | 3e+01 |
| Satellite Phi [deg] | 174.80 | |
| Satellite Theta [deg] | -58.70 |
Parameters from external Source
| Property | Value |
|---|---|
| Swift Ra [deg] | |
| Swift Dec [deg] | |
| Most likely | None None% |
| Second most likely | None None% |
GRB Location Alert
GRB 210427A: BALROG localization (Fermi Trigger / GRB 210427206)
B. Biltzinger, F. Kunzweiler, F. Berlato, J. Burgess & J. Greiner (all MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
at 04:57:12 on 27 April 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) = 172.6+/-2.5 deg
Decl.(2000.0) = -54.4+/-1.7 deg
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB210427206/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB210427206/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB210427206/json
B. Biltzinger, F. Kunzweiler, F. Berlato, J. Burgess & J. Greiner (all MPE Garching) report:
The public trigdat data of the Fermi Gamma-ray Burst Monitor (GBM) trigger
at 04:57:12 on 27 April 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) = 172.6+/-2.5 deg
Decl.(2000.0) = -54.4+/-1.7 deg
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB210427206/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB210427206/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB210427206/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
