| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB190804058 |
|
| T0 |
1:23:27 UTC |
GCN_circulars,Fermi GBM final loc |
| ra |
108.0200° |
Fermi_GBM |
| decl |
-64.8600° |
Fermi_GBM |
| pos_error |
9.97e+00° |
Fermi_GBM |
| T90 |
4.224 s |
Fermi_GBM |
| T90_error |
0.516 s |
Fermi_GBM |
| T90_start |
1:23:27.291 UTC |
Fermi_GBM |
| fluence |
4.48e-07 erg/cm² |
Fermi_GBM |
| fluence_error |
1.55e-08 erg/cm² |
Fermi_GBM |
| T100 |
4.515 s |
|
| GBM_located |
True |
|
| mjd |
58699.05795138889 |
GCN_circulars,Fermi GBM final loc |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB190804058 |
| trigger_name |
bn190804058 |
| ra |
108.0200° |
| decl |
-64.8600° |
| pos_error |
9.97e+00° |
| datum |
2019-08-04 |
| t_trigger |
1:23:27.355 UTC |
| T90 |
4.224 s |
| T90_error |
0.516 s |
| T90_start |
1:23:27.291 UTC |
| fluence |
4.48e-07 erg/cm² |
| fluence_error |
1.55e-08 erg/cm² |
| flux_1024 |
3.08e+00 erg/cm²/s |
| flux_1024_error |
3.50e-01 erg/cm²/s |
| flux_1024_time |
-3.20e-01 erg/cm²/s |
| flux_64 |
7.33e+00 erg/cm²/s |
| flux_64_error |
1.68e+00 erg/cm²/s |
| GCN 25259 table |
|---|
| GRB_name |
GRB190804A |
| GCN_number |
25259 |
| Detection_method |
Fermi GBM final loc |
| t_trigger |
1:23:27 UTC |
| ra |
108.0000° |
| decl |
-64.9000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 25259
SUBJECT: GRB 190804A: Fermi GBM Final Real-time Localization
DATE: 19/08/04 01:35:19 GMT
FROM: Fermi GBM Team at MSFC/Fermi-GBM
The Fermi GBM team reports the detection of a likely LONG GRB
At 01:23:27 UT on 4 Aug 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 190804A (trigger 586574612.354622 / 190804058).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 108.0, Dec = -64.9 (J2000 degrees, equivalent to J2000 07h 12m, -64d 54'), with a statistical uncertainty of 12.0 degrees.
The angle from the Fermi LAT boresight is 117.0 degrees.
The skymap can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190804058/quicklook/glg_skymap_all_bn190804058.png
The HEALPix FITS file, including the estimated localization systematic, can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190804058/quicklook/glg_healpix_all_bn190804058.fit
The GBM light curve can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190804058/quicklook/glg_lc_medres34_bn190804058.gif
|
| GCN 25289 table |
|---|
| GRB_name |
GRB190804A |
| GCN_number |
25289 |
| Detection_method |
AstroSat CZTI |
| t_trigger |
1:23:28 UTC |
| T90 |
2.0 s |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 25289
SUBJECT: GRB 190804A: AstroSat CZTI detection
DATE: 19/08/08 12:06:02 GMT
FROM: Prachee Ghumatkar at IUCAA/AstroSat
P. Ghumatkar, V. Sharma and D. Bhattacharya (IUCAA), V. Bhalerao (IIT-B), A. R. Rao (TIFR) and S. Vadawale (PRL) report on behalf of the AstroSat CZTI collaboration:
Analysis of AstroSat CZTI data showed the detection of GRB 190804A, which was also detected by Fermi GBM (GCN #25259) and Global MASTER-Net (Lipunov V. et al., GCN #25260).
The source was clearly detected in the 40-200 keV energy range. The light curve shows multiple pulses of emission with the strongest peak at 01:23:28.0 UT. The measured peak count rate associated with the burst is 149 cts/s above the background in the combined data of four quadrants, with a total of 298 cts. The local mean background count rate was 535 cts/s. Using cumulative rates, we measure a T90 of 2 s.
It was also clearly detected in the CsI anticoincidence (Veto) detector in the 100-500 keV energy range.
CZTI GRB detections are reported regularly on the payload site at http://astrosat.iucaa.in/czti/?q=grb. CZTI is built by a TIFR-led consortium of institutes across India, including VSSC, ISAC, IUCAA, SAC and PRL. The Indian Space Research Organisation funded, managed and facilitated the project.
|