| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB230905656 |
|
| T0 |
15:44:59 UTC |
GCN_circulars,Fermi GBM final loc |
| ra |
154.7600° |
Fermi_GBM |
| decl |
-0.7600° |
Fermi_GBM |
| pos_error |
9.20e+00° |
Fermi_GBM |
| T90 |
0.448 s |
Fermi_GBM |
| T90_error |
0.264 s |
Fermi_GBM |
| T90_start |
15:44:59.386 UTC |
Fermi_GBM |
| fluence |
1.91e-07 erg/cm² |
Fermi_GBM |
| fluence_error |
8.87e-09 erg/cm² |
Fermi_GBM |
| T100 |
0.834 s |
|
| GBM_located |
True |
|
| mjd |
60192.65623842592 |
GCN_circulars,Fermi GBM final loc |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB230905656 |
| trigger_name |
bn230905656 |
| ra |
154.7600° |
| decl |
-0.7600° |
| pos_error |
9.20e+00° |
| datum |
2023-09-05 |
| t_trigger |
15:44:59.770 UTC |
| T90 |
0.448 s |
| T90_error |
0.264 s |
| T90_start |
15:44:59.386 UTC |
| fluence |
1.91e-07 erg/cm² |
| fluence_error |
8.87e-09 erg/cm² |
| flux_1024 |
2.00e+00 erg/cm²/s |
| flux_1024_error |
1.92e-01 erg/cm²/s |
| flux_1024_time |
-4.48e-01 erg/cm²/s |
| flux_64 |
7.54e+00 erg/cm²/s |
| flux_64_error |
1.14e+00 erg/cm²/s |
| GCN 34628 table |
|---|
| GRB_name |
GRB230905A |
| GCN_number |
34628 |
| Detection_method |
Fermi GBM final loc |
| t_trigger |
15:44:59 UTC |
| ra |
154.8000° |
| decl |
-0.8000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 34628
SUBJECT: GRB 230905A: Fermi GBM Final Real-time Localization
DATE: 23/09/05 15:55:23 GMT
FROM: Fermi GBM Team at MSFC/Fermi-GBM
The Fermi GBM team reports the detection of a likely SHORT GRB
At 15:44:59 UT on 5 Sep 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230905A (trigger 715621504.769918 / 230905656).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 154.8, Dec = -0.8 (J2000 degrees, equivalent to J2000 10h 19m, 0d 48'), with a statistical uncertainty of 14.4 degrees.
The angle from the Fermi LAT boresight is 64.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230905656/quicklook/glg_skymap_all_bn230905656.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230905656/quicklook/glg_healpix_all_bn230905656.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230905656/quicklook/glg_lc_medres34_bn230905656.gif
|