| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB231222299 |
|
| T0 |
7:09:54 UTC |
GCN_circulars,Fermi GBM final loc |
| ra |
161.4300° |
Fermi_GBM |
| decl |
-35.9900° |
Fermi_GBM |
| pos_error |
2.67e+00° |
Fermi_GBM |
| T90 |
14.592 s |
Fermi_GBM |
| T90_error |
1.379 s |
Fermi_GBM |
| T90_start |
7:09:54.357 UTC |
Fermi_GBM |
| fluence |
6.75e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
3.61e-08 erg/cm² |
Fermi_GBM |
| T100 |
14.949 s |
|
| GBM_located |
True |
|
| mjd |
60300.29854166666 |
GCN_circulars,Fermi GBM final loc |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB231222299 |
| trigger_name |
bn231222299 |
| ra |
161.4300° |
| decl |
-35.9900° |
| pos_error |
2.67e+00° |
| datum |
2023-12-22 |
| t_trigger |
7:09:54.613 UTC |
| T90 |
14.592 s |
| T90_error |
1.379 s |
| T90_start |
7:09:54.357 UTC |
| fluence |
6.75e-06 erg/cm² |
| fluence_error |
3.61e-08 erg/cm² |
| flux_1024 |
1.42e+01 erg/cm²/s |
| flux_1024_error |
4.75e-01 erg/cm²/s |
| flux_1024_time |
4.93e+00 erg/cm²/s |
| flux_64 |
1.80e+01 erg/cm²/s |
| flux_64_error |
2.08e+00 erg/cm²/s |
| GCN 35412 table |
|---|
| GRB_name |
GRB231222A |
| GCN_number |
35412 |
| Detection_method |
Fermi GBM final loc |
| t_trigger |
7:09:54 UTC |
| ra |
161.4000° |
| decl |
-36.0000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 35412
SUBJECT: GRB 231222A: Fermi GBM Final Real-time Localization
DATE: 23/12/22 07:20:32 GMT
FROM: Fermi GBM Team at MSFC/Fermi-GBM
The Fermi GBM team reports the detection of a likely LONG GRB
At 07:09:54 UT on 22 Dec 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 231222A (trigger 724921799.613468 / 231222299).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 161.4, Dec = -36.0 (J2000 degrees, equivalent to J2000 10h 45m, -36d 00'), with a statistical uncertainty of 1.2 degrees.
The angle from the Fermi LAT boresight is 91.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231222299/quicklook/glg_skymap_all_bn231222299.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231222299/quicklook/glg_healpix_all_bn231222299.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn231222299/quicklook/glg_lc_medres34_bn231222299.gif
|
| GCN 35415 table |
|---|
| GRB_name |
GRB231222A |
| GCN_number |
35415 |
| Detection_method |
Swift Other |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 35415
SUBJECT: GRB 231222A: Tiled Swift observations
DATE: 23/12/22 19:25:08 GMT
FROM: Phil Evans at U of Leicester
P. A. Evans (U. Leicester) reports on behalf of the Swift team:
Swift has initiated a series of observations, tiled on the sky, of the
Fermi/LAT GRB 231222A. Automated analysis of the XRT data will
be presented online at http://www.swift.ac.uk/xrt_products/TILED_GRB00118
Any uncatalogued X-ray sources detected in this analysis will be
reported on this website and via GCN COUNTERPART notices. The probability of finding
serendipitous sources, unrelated to the Fermi/LAT event is high: any X-ray source
considered to be a probable afterglow candidate will be reported via a GCN Circular
after manual consideration.
Details of the XRT automated analysis methods are detailed in Evans et
al. (2007, A&A, 469, 379; 2009, MNRAS, 397, 1177 and 2014, ApJS, 210, 8).
This circular is an official product of the Swift-XRT team.
|