GRB Properties
Parameters calculated by MPE
| Property | Value | Error (1 σ statistical) |
|---|---|---|
| Trigger Number | 629957660 | |
| Trigger Time | Dec. 18, 2020, 04:14:15 | |
| Data Timestamp | Dec. 18, 2020, 05:17:04 | |
| Localization Timestamp | Dec. 18, 2020, 06:53:07 | |
| Balrog Ra [deg] | 287.3 | 0.2 |
| Balrog Dec [deg] | 26.9 | 0.3 |
| Error radius 1 σ [deg] | 0.3 | |
| Error radius 2 σ [deg] | 0.7 | |
| Estimated systematic error [deg] | 1 | |
| Fitted Model | cutoff_powerlaw | |
| Spectral Parameter K [photons/cm^2/keV*s] | 6.9 | 0.23 |
| Spectral Parameter Index | -0.89 | 0.0083 |
| Spectral Parameter XC [keV] | 5e+02 | 1e+01 |
| Satellite Phi [deg] | -15.72 | |
| Satellite Theta [deg] | -7.97 |
Parameters from external Source
| Property | Value |
|---|---|
| Swift Ra [deg] | |
| Swift Dec [deg] | |
| Most likely | GRB 80.0% |
| Second most likely | CYG_X1 15.0% |
GRB Location Alert
GRB 201218A: BALROG localization (Fermi Trigger 629957660 / GRB 201218177)
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
629957660 at 04:14:15 on 18 Dec. 2020 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) = 287.38+/-0.29 deg
Decl.(2000.0) = 26.80+/-0.30 deg
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB201218177/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB201218177/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB201218177/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
629957660 at 04:14:15 on 18 Dec. 2020 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) = 287.38+/-0.29 deg
Decl.(2000.0) = 26.80+/-0.30 deg
We estimate an additional systematic error of 1 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB201218177/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB201218177/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB201218177/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
