| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB230725439 |
|
| T0 |
10:32:50 UTC |
GCN_circulars,Fermi GBM final loc |
| ra |
207.2300° |
Fermi_GBM |
| decl |
4.9200° |
Fermi_GBM |
| pos_error |
4.60e+00° |
Fermi_GBM |
| T90 |
0.576 s |
Fermi_GBM |
| T90_error |
1.541 s |
Fermi_GBM |
| T90_start |
10:32:50.815 UTC |
Fermi_GBM |
| fluence |
3.09e-07 erg/cm² |
Fermi_GBM |
| fluence_error |
2.41e-08 erg/cm² |
Fermi_GBM |
| T100 |
1.391 s |
|
| GBM_located |
True |
|
| mjd |
60150.439467592594 |
GCN_circulars,Fermi GBM final loc |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB230725439 |
| trigger_name |
bn230725439 |
| ra |
207.2300° |
| decl |
4.9200° |
| pos_error |
4.60e+00° |
| datum |
2023-07-25 |
| t_trigger |
10:32:50.879 UTC |
| T90 |
0.576 s |
| T90_error |
1.541 s |
| T90_start |
10:32:50.815 UTC |
| fluence |
3.09e-07 erg/cm² |
| fluence_error |
2.41e-08 erg/cm² |
| flux_1024 |
2.60e+00 erg/cm²/s |
| flux_1024_error |
2.58e-01 erg/cm²/s |
| flux_1024_time |
-1.92e-01 erg/cm²/s |
| flux_64 |
1.48e+01 erg/cm²/s |
| flux_64_error |
1.51e+00 erg/cm²/s |
| GCN 34255 table |
|---|
| GRB_name |
GRB230725A |
| GCN_number |
34255 |
| Detection_method |
Fermi GBM final loc |
| t_trigger |
10:32:50 UTC |
| ra |
207.2000° |
| decl |
4.9000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 34255
SUBJECT: GRB 230725A: Fermi GBM Final Real-time Localization
DATE: 23/07/25 10:43:21 GMT
FROM: Fermi GBM Team at MSFC/Fermi-GBM
The Fermi GBM team reports the detection of a likely SHORT GRB
At 10:32:50 UT on 25 Jul 2023, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 230725A (trigger 711973975.87891 / 230725439).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 207.2, Dec = 4.9 (J2000 degrees, equivalent to J2000 13h 48m, 4d 54'), with a statistical uncertainty of 4.5 degrees.
The angle from the Fermi LAT boresight is 31.0 degrees.
The skymap can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230725439/quicklook/glg_skymap_all_bn230725439.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/bn230725439/quicklook/glg_healpix_all_bn230725439.fit
The GBM light curve can be found here:
https://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2023/bn230725439/quicklook/glg_lc_medres34_bn230725439.gif
|