| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB220821296 |
|
| T0 |
7:05:35 UTC |
GCN_circulars,Fermi GBM final loc |
| ra |
133.5800° |
Fermi_GBM |
| decl |
28.7400° |
Fermi_GBM |
| pos_error |
3.72e+00° |
Fermi_GBM |
| T90 |
38.145 s |
Fermi_GBM |
| T90_error |
1.056 s |
Fermi_GBM |
| T90_start |
7:05:35.185 UTC |
Fermi_GBM |
| fluence |
5.37e-06 erg/cm² |
Fermi_GBM |
| fluence_error |
2.08e-08 erg/cm² |
Fermi_GBM |
| T100 |
38.33 s |
|
| GBM_located |
True |
|
| mjd |
59812.29554398148 |
GCN_circulars,Fermi GBM final loc |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB220821296 |
| trigger_name |
bn220821296 |
| ra |
133.5800° |
| decl |
28.7400° |
| pos_error |
3.72e+00° |
| datum |
2022-08-21 |
| t_trigger |
7:05:35.441 UTC |
| T90 |
38.145 s |
| T90_error |
1.056 s |
| T90_start |
7:05:35.185 UTC |
| fluence |
5.37e-06 erg/cm² |
| fluence_error |
2.08e-08 erg/cm² |
| flux_1024 |
4.76e+00 erg/cm²/s |
| flux_1024_error |
2.65e-01 erg/cm²/s |
| flux_1024_time |
5.89e+00 erg/cm²/s |
| flux_64 |
7.15e+00 erg/cm²/s |
| flux_64_error |
1.15e+00 erg/cm²/s |
| GCN 32473 table |
|---|
| GRB_name |
GRB220821A |
| GCN_number |
32473 |
| Detection_method |
Fermi GBM final loc |
| t_trigger |
7:05:35 UTC |
| ra |
133.6000° |
| decl |
28.7000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 32473
SUBJECT: GRB 220821A: Fermi GBM Final Real-time Localization
DATE: 22/08/21 07:16:03 GMT
FROM: Fermi GBM Team at MSFC/Fermi-GBM
The Fermi GBM team reports the detection of a likely LONG GRB
At 07:05:35 UT on 21 Aug 2022, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 220821A (trigger 682758340.440514 / 220821296).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 133.6, Dec = 28.7 (J2000 degrees, equivalent to J2000 08h 54m, 28d 41'), with a statistical uncertainty of 3.6 degrees.
The angle from the Fermi LAT boresight is 74.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220821296/quicklook/glg_skymap_all_bn220821296.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/bn220821296/quicklook/glg_healpix_all_bn220821296.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn220821296/quicklook/glg_lc_medres34_bn220821296.gif
|