| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB210917157 |
|
| T0 |
3:45:44.792 UTC |
Fermi_GBM |
| ra |
75.4700° |
Fermi_GBM |
| decl |
-36.1800° |
Fermi_GBM |
| pos_error |
4.97e+00° |
Fermi_GBM |
| T90 |
7.04 s |
Fermi_GBM |
| T90_error |
3.666 s |
Fermi_GBM |
| T90_start |
3:45:44.792 UTC |
Fermi_GBM |
| fluence |
3.75e-07 erg/cm² |
Fermi_GBM |
| fluence_error |
3.16e-08 erg/cm² |
Fermi_GBM |
| T100 |
7.04 s |
|
| GBM_located |
True |
|
| mjd |
59474.15676842593 |
Fermi_GBM |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB210917157 |
| trigger_name |
bn210917157 |
| ra |
75.4700° |
| decl |
-36.1800° |
| pos_error |
4.97e+00° |
| datum |
2021-09-17 |
| t_trigger |
3:45:47.224 UTC |
| T90 |
7.04 s |
| T90_error |
3.666 s |
| T90_start |
3:45:44.792 UTC |
| fluence |
3.75e-07 erg/cm² |
| fluence_error |
3.16e-08 erg/cm² |
| flux_1024 |
1.28e+00 erg/cm²/s |
| flux_1024_error |
2.35e-01 erg/cm²/s |
| flux_1024_time |
-9.60e-01 erg/cm²/s |
| flux_64 |
3.60e+00 erg/cm²/s |
| flux_64_error |
1.13e+00 erg/cm²/s |
| GCN 30843 table |
|---|
| GRB_name |
GRB210917A |
| GCN_number |
30843 |
| Detection_method |
Fermi GBM final loc |
| t_trigger |
3:45:47 UTC |
| ra |
75.5000° |
| decl |
-36.2000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 30843
SUBJECT: GRB 210917A: Fermi GBM Final Real-time Localization
DATE: 21/09/17 03:56:05 GMT
FROM: Fermi GBM Team at MSFC/Fermi-GBM
The Fermi GBM team reports the detection of a likely LONG GRB
At 03:45:47 UT on 17 Sep 2021, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 210917A (trigger 653543152.223672 / 210917157).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 75.5, Dec = -36.2 (J2000 degrees, equivalent to J2000 05h 01m, -36d 12'), with a statistical uncertainty of 5.6 degrees.
The angle from the Fermi LAT boresight is 90.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210917157/quicklook/glg_skymap_all_bn210917157.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210917157/quicklook/glg_healpix_all_bn210917157.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210917157/quicklook/glg_lc_medres34_bn210917157.gif
|