| Summary table |
|---|
| Variable |
Value |
Source |
| GRB_name_Fermi |
GRB190919764 |
|
| T0 |
18:20:02 UTC |
GCN_circulars,Fermi GBM final loc |
| ra |
357.3600° |
Fermi_GBM |
| decl |
-21.8200° |
Fermi_GBM |
| pos_error |
3.09e+00° |
Fermi_GBM |
| T90 |
41.985 s |
Fermi_GBM |
| T90_error |
0.81 s |
Fermi_GBM |
| T90_start |
18:20:06.240 UTC |
Fermi_GBM |
| fluence |
1.47e-05 erg/cm² |
Fermi_GBM |
| fluence_error |
5.08e-08 erg/cm² |
Fermi_GBM |
| T100 |
46.225 s |
|
| GBM_located |
True |
|
| mjd |
58745.76391203704 |
GCN_circulars,Fermi GBM final loc |
| Fermi GBM table |
|---|
| GRB_name_Fermi |
GRB190919764 |
| trigger_name |
bn190919764 |
| ra |
357.3600° |
| decl |
-21.8200° |
| pos_error |
3.09e+00° |
| datum |
2019-09-19 |
| t_trigger |
18:20:02.656 UTC |
| T90 |
41.985 s |
| T90_error |
0.81 s |
| T90_start |
18:20:06.240 UTC |
| fluence |
1.47e-05 erg/cm² |
| fluence_error |
5.08e-08 erg/cm² |
| flux_1024 |
8.29e+00 erg/cm²/s |
| flux_1024_error |
3.04e-01 erg/cm²/s |
| flux_1024_time |
3.70e+01 erg/cm²/s |
| flux_64 |
9.93e+00 erg/cm²/s |
| flux_64_error |
1.32e+00 erg/cm²/s |
| GCN 25783 table |
|---|
| GRB_name |
GRB190919A |
| GCN_number |
25783 |
| Detection_method |
Fermi GBM final loc |
| t_trigger |
18:20:02 UTC |
| ra |
357.4000° |
| decl |
-21.8000° |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 25783
SUBJECT: GRB 190919A: Fermi GBM Final Real-time Localization
DATE: 19/09/19 18:30:16 GMT
FROM: Fermi GBM Team at MSFC/Fermi-GBM
The Fermi GBM team reports the detection of a likely LONG GRB
At 18:20:02 UT on 19 Sep 2019, the Fermi Gamma-ray Burst Monitor (GBM) triggered and located GRB 190919A (trigger 590610007.65552 / 190919764).
The on-ground calculated location, using the Fermi GBM trigger data, is RA = 357.4, Dec = -21.8 (J2000 degrees, equivalent to J2000 23h 49m, -21d 48'), with a statistical uncertainty of 2.5 degrees.
The angle from the Fermi LAT boresight is 83.0 degrees.
The skymap can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190919764/quicklook/glg_skymap_all_bn190919764.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/bn190919764/quicklook/glg_healpix_all_bn190919764.fit
The GBM light curve can be found here:
http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190919764/quicklook/glg_lc_medres34_bn190919764.gif
|
| GCN 25935 table |
|---|
| GRB_name |
GRB190919A |
| GCN_number |
25935 |
| Detection_method |
AstroSat CZTI |
| Circular_text |
TITLE: GCN CIRCULAR
NUMBER: 25935
SUBJECT: GRB 190919A: AstroSat CZTI detection
DATE: 19/10/03 12:38:11 GMT
FROM: Ramkrishna Gaikwad at IUCAA/AstroSat
R. Gaikwad, V. Sharma, D. Bhattacharya and A. Vibhute (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 a GRB 190919A, which was also detected by Fermi GBM Final Real-time Localization (GCN #25783).
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 2019-09-19 18:20:02.0 UT. The measured peak count rate associated with the burst is 340 cts/s above the background in the combined data of four quadrants, with a total of 4389 cts. The local mean background count rate was 492 cts/s. Using cumulative rates, we measure a T90 of 42.6 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.
|