| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB221209877 |
|
| T0 |
21:03:25.228 UTC |
Fermi_GBM |
| ra |
142.1500° |
Fermi_GBM |
| decl |
-5.2200° |
Fermi_GBM |
| pos_error |
8.20e+00° |
Fermi_GBM |
| T90 |
15.616 s |
Fermi_GBM |
| T90_error |
3.566 s |
Fermi_GBM |
| T90_start |
21:03:25.228 UTC |
Fermi_GBM |
| fluence |
1.49e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
2.55e-08 erg/cm² |
Fermi_GBM |
| T100 |
15.616 s |
|
| GBM_located |
True |
|
| mjd |
59922.877375324075 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB221209877 |
| trigger_name |
bn221209877 |
| ra |
142.1500° |
| decl |
-5.2200° |
| pos_error |
8.20e+00° |
| datum |
2022-12-09 |
| t_trigger |
21:03:27.788 UTC |
| T90 |
15.616 s |
| T90_error |
3.566 s |
| T90_start |
21:03:25.228 UTC |
| fluence |
1.49e-06 erg/cm² |
| fluence_error |
2.55e-08 erg/cm² |
| flux_1024 |
2.33e+00 erg/cm²/s |
| flux_1024_error |
2.09e-01 erg/cm²/s |
| flux_1024_time |
-5.12e-01 erg/cm²/s |
| flux_64 |
3.58e+00 erg/cm²/s |
| flux_64_error |
9.08e-01 erg/cm²/s |
| GCN 33035 table |
|---|
| GRB_name |
GRB221209B |
| GCN_number |
33035 |
| Detection_method |
Fermi GBM final loc |
| t_trigger |
21:03:27 UTC |
| ra |
142.1000° |
| decl |
-5.2000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 33035
SUBJECT: GRB 221209B: Fermi GBM Final Real-time Localization
DATE: 22/12/09 21:13:45 GMT
FROM: Fermi GBM Team at MSFC/Fermi-GBM
The Fermi GBM team reports the detection of a likely LONG GRB
At 21:03:27 UT on 9 Dec 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 221209B (trigger 692312612.788022 / 221209877).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 142.1, Dec = -5.2 (J2000 degrees, equivalent to J2000 09h 28m, -5d 12'), with a statistical uncertainty of 10.6 degrees.
The angle from the Fermi LAT boresight is 92.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn221209877/quicklook/glg_skymap_all_bn221209877.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn221209877/quicklook/glg_healpix_all_bn221209877.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn221209877/quicklook/glg_lc_medres34_bn221209877.gif
|