| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB250122636 |
|
| T0 |
15:15:21 UTC |
GCN_circulars,Fermi GBM final loc |
| ra |
266.0100° |
Fermi_GBM |
| decl |
24.8600° |
Fermi_GBM |
| pos_error |
5.11e+00° |
Fermi_GBM |
| T90 |
14.016 s |
Fermi_GBM |
| T90_error |
3.367 s |
Fermi_GBM |
| T90_start |
15:15:21.374 UTC |
Fermi_GBM |
| fluence |
2.62e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
5.70e-08 erg/cm² |
Fermi_GBM |
| T100 |
14.39 s |
|
| GBM_located |
True |
|
| mjd |
60697.635659722226 |
GCN_circulars,Fermi GBM final loc |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB250122636 |
| trigger_name |
bn250122636 |
| ra |
266.0100° |
| decl |
24.8600° |
| pos_error |
5.11e+00° |
| datum |
2025-01-22 |
| t_trigger |
15:15:21.758 UTC |
| T90 |
14.016 s |
| T90_error |
3.367 s |
| T90_start |
15:15:21.374 UTC |
| fluence |
2.62e-06 erg/cm² |
| fluence_error |
5.70e-08 erg/cm² |
| flux_1024 |
7.41e+00 erg/cm²/s |
| flux_1024_error |
5.92e-01 erg/cm²/s |
| flux_1024_time |
1.92e-01 erg/cm²/s |
| flux_64 |
1.11e+01 erg/cm²/s |
| flux_64_error |
2.95e+00 erg/cm²/s |
| GCN 39014 table |
|---|
| GRB_name |
GRB250122A |
| GCN_number |
39014 |
| Detection_method |
Fermi GBM final loc |
| t_trigger |
15:15:21 UTC |
| ra |
266.0000° |
| decl |
24.9000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 39014
SUBJECT: GRB 250122A: Fermi GBM Final Real-time Localization
DATE: 25/01/22 15:26:00 GMT
FROM: Fermi GBM Team at MSFC/Fermi-GBM
The Fermi GBM team reports the detection of a likely LONG GRB
At 15:15:21 UT on 22 Jan 2025, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 250122A (trigger 759251726.758022 / 250122636).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 266.0, Dec = 24.9 (J2000 degrees, equivalent to J2000 17h 44m, 24d 53'), with a statistical uncertainty of 6.8 degrees.
The angle from the Fermi LAT boresight is 87.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250122636/quicklook/glg_skymap_all_bn250122636.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250122636/quicklook/glg_healpix_all_bn250122636.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn250122636/quicklook/glg_lc_medres34_bn250122636.gif
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