| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB220404741 |
|
| T0 |
17:46:53.119 UTC |
Fermi_GBM |
| ra |
25.5700° |
Fermi_GBM |
| decl |
-10.8300° |
Fermi_GBM |
| pos_error |
5.68e+00° |
Fermi_GBM |
| T90 |
82.176 s |
Fermi_GBM |
| T90_error |
2.673 s |
Fermi_GBM |
| T90_start |
17:46:53.119 UTC |
Fermi_GBM |
| fluence |
4.19e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
3.52e-08 erg/cm² |
Fermi_GBM |
| T100 |
82.176 s |
|
| GBM_located |
True |
|
| mjd |
59673.740892581016 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB220404741 |
| trigger_name |
bn220404741 |
| ra |
25.5700° |
| decl |
-10.8300° |
| pos_error |
5.68e+00° |
| datum |
2022-04-04 |
| t_trigger |
17:47:23.327 UTC |
| T90 |
82.176 s |
| T90_error |
2.673 s |
| T90_start |
17:46:53.119 UTC |
| fluence |
4.19e-06 erg/cm² |
| fluence_error |
3.52e-08 erg/cm² |
| flux_1024 |
2.35e+00 erg/cm²/s |
| flux_1024_error |
2.06e-01 erg/cm²/s |
| flux_1024_time |
-2.56e-01 erg/cm²/s |
| flux_64 |
3.61e+00 erg/cm²/s |
| flux_64_error |
1.07e+00 erg/cm²/s |
| GCN 31831 table |
|---|
| GRB_name |
GRB220404B |
| GCN_number |
31831 |
| Detection_method |
Fermi GBM final loc |
| t_trigger |
17:47:23 UTC |
| ra |
25.6000° |
| decl |
-10.8000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 31831
SUBJECT: GRB 220404B: Fermi GBM Final Real-time Localization
DATE: 22/04/04 17:59:07 GMT
FROM: Fermi GBM Team at MSFC/Fermi-GBM
The Fermi GBM team reports the detection of a likely LONG GRB
At 17:47:23 UT on 4 Apr 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220404B (trigger 670787248.326908 / 220404741).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 25.6, Dec = -10.8 (J2000 degrees, equivalent to J2000 01h 42m, -10d 48'), with a statistical uncertainty of 7.5 degrees.
The angle from the Fermi LAT boresight is 38.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220404741/quicklook/glg_skymap_all_bn220404741.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/bn220404741/quicklook/glg_healpix_all_bn220404741.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220404741/quicklook/glg_lc_medres34_bn220404741.gif
|