| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB220508939 |
|
| T0 |
22:32:49 UTC |
GCN_circulars,Fermi GBM final loc |
| ra |
344.3800° |
Fermi_GBM |
| decl |
-3.2400° |
Fermi_GBM |
| pos_error |
4.00e+00° |
Fermi_GBM |
| T90 |
57.601 s |
Fermi_GBM |
| T90_error |
10.509 s |
Fermi_GBM |
| T90_start |
22:32:50.284 UTC |
Fermi_GBM |
| fluence |
2.57e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
5.79e-08 erg/cm² |
Fermi_GBM |
| T100 |
58.885 s |
|
| GBM_located |
True |
|
| mjd |
59707.93945601852 |
GCN_circulars,Fermi GBM final loc |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB220508939 |
| trigger_name |
bn220508939 |
| ra |
344.3800° |
| decl |
-3.2400° |
| pos_error |
4.00e+00° |
| datum |
2022-05-08 |
| t_trigger |
22:32:49.516 UTC |
| T90 |
57.601 s |
| T90_error |
10.509 s |
| T90_start |
22:32:50.284 UTC |
| fluence |
2.57e-06 erg/cm² |
| fluence_error |
5.79e-08 erg/cm² |
| flux_1024 |
2.23e+00 erg/cm²/s |
| flux_1024_error |
2.21e-01 erg/cm²/s |
| flux_1024_time |
1.47e+00 erg/cm²/s |
| flux_64 |
4.54e+00 erg/cm²/s |
| flux_64_error |
1.21e+00 erg/cm²/s |
| GCN 32010 table |
|---|
| GRB_name |
GRB220508A |
| GCN_number |
32010 |
| Detection_method |
Fermi GBM final loc |
| t_trigger |
22:32:49 UTC |
| ra |
344.4000° |
| decl |
-3.2000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 32010
SUBJECT: GRB 220508A: Fermi GBM Final Real-time Localization
DATE: 22/05/08 22:43:05 GMT
FROM: Fermi GBM Team at MSFC/Fermi-GBM
The Fermi GBM team reports the detection of a likely LONG GRB
At 22:32:49 UT on 8 May 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220508A (trigger 673741974.516028 / 220508939).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 344.4, Dec = -3.2 (J2000 degrees, equivalent to J2000 22h 57m, -3d 12'), with a statistical uncertainty of 3.0 degrees.
The angle from the Fermi LAT boresight is 69.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220508939/quicklook/glg_skymap_all_bn220508939.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/bn220508939/quicklook/glg_healpix_all_bn220508939.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220508939/quicklook/glg_lc_medres34_bn220508939.gif
|