| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB191225735 |
|
| T0 |
17:37:50.075 UTC |
Fermi_GBM |
| ra |
145.8000° |
Fermi_GBM |
| decl |
-7.1800° |
Fermi_GBM |
| pos_error |
3.28e+00° |
Fermi_GBM |
| T90 |
82.69 s |
Fermi_GBM |
| T90_error |
2.919 s |
Fermi_GBM |
| T90_start |
17:37:50.075 UTC |
Fermi_GBM |
| fluence |
8.40e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
3.91e-08 erg/cm² |
Fermi_GBM |
| T100 |
82.69 s |
|
| GBM_located |
True |
|
| mjd |
58842.734607349536 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB191225735 |
| trigger_name |
bn191225735 |
| ra |
145.8000° |
| decl |
-7.1800° |
| pos_error |
3.28e+00° |
| datum |
2019-12-25 |
| t_trigger |
17:37:51.867 UTC |
| T90 |
82.69 s |
| T90_error |
2.919 s |
| T90_start |
17:37:50.075 UTC |
| fluence |
8.40e-06 erg/cm² |
| fluence_error |
3.91e-08 erg/cm² |
| flux_1024 |
7.16e+00 erg/cm²/s |
| flux_1024_error |
3.14e-01 erg/cm²/s |
| flux_1024_time |
7.04e-01 erg/cm²/s |
| flux_64 |
9.55e+00 erg/cm²/s |
| flux_64_error |
1.23e+00 erg/cm²/s |
| GCN 26581 table |
|---|
| GRB_name |
GRB191225B |
| GCN_number |
26581 |
| Detection_method |
Fermi GBM final loc |
| t_trigger |
17:37:51 UTC |
| ra |
145.8000° |
| decl |
-7.2000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 26581
SUBJECT: GRB 191225B: Fermi GBM Final Real-time Localization
DATE: 19/12/25 17:47:56 GMT
FROM: Fermi GBM Team at MSFC/Fermi-GBM
The Fermi GBM team reports the detection of a likely LONG GRB
At 17:37:51 UT on 25 Dec 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 191225B (trigger 598988276.867438 / 191225735).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 145.8, Dec = -7.2 (J2000 degrees, equivalent to J2000 09h 43m, -7d 12'), with a statistical uncertainty of 2.8 degrees.
The angle from the Fermi LAT boresight is 61.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191225735/quicklook/glg_skymap_all_bn191225735.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191225735/quicklook/glg_healpix_all_bn191225735.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn191225735/quicklook/glg_lc_medres34_bn191225735.gif
|
| GCN 26583 table |
|---|
| GRB_name |
GRB191225B |
| GCN_number |
26583 |
| Detection_method |
Other |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 26583
SUBJECT: GRB 191225B: BALROG localization (Fermi Trigger 598988276 / GRB 191225735)
DATE: 19/12/25 18:02:04 GMT
FROM: Jochen Greiner at MPE,Garching
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
598988276 at 17:37:51 on 25 Dec. 2019 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) = 144.1+/-1.7 deg
Decl.(2000.0) = -7.2+/-0.8 deg
We estimate an additional systematic error of 2 deg.
Further details are available at:
https://grb.mpe.mpg.de/grb/GRB191225735/
The Healpix map can be downloaded from:
https://grb.mpe.mpg.de/grb/GRB191225735/healpix
The location parameters are available as JSON at:
https://grb.mpe.mpg.de/grb/GRB191225735/json
|