GRB180723A

This page lists all entries on GRB180723A in GRBweb

Summary Fermi GBM GCN 23029 GCN 23035 GCN 23099

Summary table
Variable Value Source
GRB_name_Fermi GRB180723757
T0 18:09:48.160 UTC GCN_circulars,Fermi GBM Det
ra 7.8400° Fermi_GBM
decl -66.1100° Fermi_GBM
pos_error 2.49e+00° Fermi_GBM
T90 19.712 s Fermi_GBM
T90_error 0.572 s Fermi_GBM
T90_start 18:09:48.929 UTC Fermi_GBM
fluence 4.33e-05 erg/cm² Fermi_GBM
fluence_error 5.93e-08 erg/cm² Fermi_GBM
T100 20.481 s
GBM_located True
mjd 58322.75680740741 GCN_circulars,Fermi GBM Det
Fermi GBM table
GRB_name_Fermi GRB180723757
trigger_name bn180723757
ra 7.8400°
decl -66.1100°
pos_error 2.49e+00°
datum 2018-07-23
t_trigger 18:09:48.161 UTC
T90 19.712 s
T90_error 0.572 s
T90_start 18:09:48.929 UTC
fluence 4.33e-05 erg/cm²
fluence_error 5.93e-08 erg/cm²
flux_1024 4.12e+01 erg/cm²/s
flux_1024_error 8.14e-01 erg/cm²/s
flux_1024_time 3.39e+00 erg/cm²/s
flux_64 4.76e+01 erg/cm²/s
flux_64_error 3.47e+00 erg/cm²/s
GCN 23029 table
GRB_name GRB180723A
GCN_number 23029
Detection_method CALET
Circular_text TITLE: GCN CIRCULAR NUMBER: 23029 SUBJECT: GRB 180723A: CALET Gamma-Ray Burst Monitor detection DATE: 18/07/24 11:09:44 GMT FROM: Takanori Sakamoto at AGU W. Ishizaki (ICRR), A. Yoshida, T. Sakamoto, V. Pal'shin, S. Sugita, Y. Kawakubo, A. Tezuka, S. Matsukawa, H. Onozawa, T. Ito, H. Morita, Y. Sone (AGU), K. Yamaoka (Nagoya U), S. Nakahira (RIKEN), I. Takahashi (IPMU), Y. Asaoka, S. Ozawa, S. Torii (Waseda U), Y. Shimizu, T. Tamura (Kanagawa U), M. L. Cherry (LSU), S. Ricciarini (U of Florence), A. V. Penacchioni, P. S. Marrocchesi (U of Siena) and the CALET collaboration: The long GRB 180723A (Fermi-GBM trigger #554062193) triggered the CALET Gamma-ray Burst Monitor (CGBM) at 18:09:45.493 UTC on 23 July 2018. This GRB is also clearly seen by the publicly available INTEGRAL SPI-ACS light curve. The burst signal was seen by all CGBM detectors. The burst light curve shows a FRED-like pulse which starts at T+2.4 sec, peaks at T+4.9 sec, and ends at T+14.5 sec. The T90 and the T50 durations measured by the SGM data are 10.0 +- 1.3 sec and 4.3 +- 0.7 sec (40-1000 keV), respectively. The ground processed light curve is available at http://cgbm.calet.jp/cgbm_trigger/ground/1216404464/ The CALET data used in this analysis are provided by the Waseda CALET Operation Center located at the Waseda University.
GCN 23035 table
GRB_name GRB180723A
GCN_number 23035
Detection_method Fermi GBM Det
t_trigger 18:09:48.160 UTC
ra 7.8400°
decl -66.1100°
Circular_text TITLE: GCN CIRCULAR NUMBER: 23035 SUBJECT: GRB 180723A: Fermi GBM detection DATE: 18/07/25 02:37:32 GMT FROM: Suraj Poolakkil at UAH S.Poolakkil and C. Meegan (both UAH) report on behalf of the Fermi GBM Team: "At 18:09:48.16 UT on 23 July 2018, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 180723A (trigger 554062193/ 180723757). The on-ground calculated location, using the GBM trigger data, is RA = 7.84, DEC = -66.11, with an uncertainty of 1 degree (radius, 1-sigma containment, statistical only; there is additionally a systematic error which we have characterized as a core-plus-tail model, with 90% of GRBs having a 3.7 deg error and a small tail suffering a larger than 10 deg systematic error. [Connaughton et al. 2015, ApJS, 216, 32] ). The angle from the Fermi LAT boresight at the GBM trigger time is 132 degrees. The GBM light curve consists of a single bright peak with a duration (T90) of about 19.71 s (50-300 keV). The time-averaged spectrum from T0-2.05 s to T0+31.74 s is best fit by a power-law function with an exponential high-energy cutoff. The power law index is -1.22 +/- 0.02 and the cutoff energy, parameterized as Epeak, is 178 +/- 5 keV. The event fluence (10-1000 keV) in this time interval is (4.616 +/- 0.057)E-05 erg/cm^2. The 1-sec peak photon flux measured starting from T0+3.39 s in the 10-1000 keV band is 41.2 +/- 0.81 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN 23099 table
GRB_name GRB180723A
GCN_number 23099
Detection_method AstroSat CZTI
Circular_text TITLE: GCN CIRCULAR NUMBER: 23099 SUBJECT: GRB 180723A: AstroSat CZTI detection DATE: 18/08/08 07:57:10 GMT FROM: Vidushi Sharma at IUCAA 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 a bright GRB 180723A, which was also detected by CALET (Ishizaki W. et al., GCN 23029) and Fermi-GBM (Poolakkil S. et al., GCN 23035). The source was clearly detected in the 40-200 keV energy range. The light curve shows multiple peaks of emission with strongest peak at 18:09:49.50 UT. The measured peak count rate is 1123.5 cts/s above the background in combined data of four quadrants, with a total of 6717 cts. The local mean background count rate was 543.5 cts/s. Using cumulative rates, we measure a T90 of 25.3 s. In preliminary analysis, we find that 459 compton events are associated with this event. 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.