GRB180720A

This page lists all entries on GRB180720A in GRBweb

Summary Fermi GBM GCN 22970 GCN 22974

Summary table
Variable Value Source
GRB_name_Fermi GRB180720213
T0 5:06:02.058 UTC Fermi_GBM
ra 127.0400° Fermi_GBM
decl -0.4200° Fermi_GBM
pos_error 3.07e+00° Fermi_GBM
T90 8.896 s Fermi_GBM
T90_error 0.466 s Fermi_GBM
T90_start 5:06:02.762 UTC Fermi_GBM
fluence 2.46e-05 erg/cm² Fermi_GBM
fluence_error 5.83e-08 erg/cm² Fermi_GBM
T100 9.6 s
GBM_located True
mjd 58319.21252381944 Fermi_GBM
Fermi GBM table
GRB_name_Fermi GRB180720213
trigger_name bn180720213
ra 127.0400°
decl -0.4200°
pos_error 3.07e+00°
datum 2018-07-20
t_trigger 5:06:02.058 UTC
T90 8.896 s
T90_error 0.466 s
T90_start 5:06:02.762 UTC
fluence 2.46e-05 erg/cm²
fluence_error 5.83e-08 erg/cm²
flux_1024 3.65e+01 erg/cm²/s
flux_1024_error 4.65e-01 erg/cm²/s
flux_1024_time 1.28e+00 erg/cm²/s
flux_64 4.25e+01 erg/cm²/s
flux_64_error 1.98e+00 erg/cm²/s
GCN 22970 table
GRB_name GRB180720A
GCN_number 22970
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 22970 SUBJECT: AGILE/MCAL detection of GRB 180720A DATE: 18/07/20 07:09:02 GMT FROM: Alessandro Ursi at INAF/IAPS AGILE/MCAL detection of GRB 180720A A.Ursi (INAF/IAPS), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), F. Verrecchia (SSDC and INAF/OAR), N. Parmiggiani, A. Bulgarelli (INAF/IASF-Bo), A. Trois, M. Pilia (INAF/OA-Cagliari), C. Pittori, F. Lucarelli (SSDC and INAF/OAR), M. Marisaldi (University of Bergen), F. Longo (Univ. Trieste and INFN Trieste), M. Cardillo, G. Piano (INAF/IAPS), G. Minervini, A. Argan, Y. Evangelista (INAF/IAPS), V. Fioretti, F. Fuschino (INAF/IASF-Bo), , I. Donnarumma (ASI), A. Giuliani (INAF/IASF-Mi), report on behalf of the AGILETeam: The AGILE Mini-CALorimeter (MCAL) detected a burst at T0 = 2018-07-20 05:06:03.29 +/- 0.01 s (UTC), lasting about ~ 3.6 s in the 0.4-100 MeV energy range. The light curve is composed of a single smooth peak and released a total of ~3000 counts at E> 400 keV in the detector, above an average background rate of 20 counts / 32 ms. Further analysis is still in progress. The AGILE-MCAL detector has a full solid angle acceptance, and is operational in the range 0.4 - 100 MeV.
GCN 22974 table
GRB_name GRB180720A
GCN_number 22974
Detection_method Fermi GBM Det
t_trigger 5:06:02.060 UTC
ra 127.0000°
decl -0.4000°
Circular_text TITLE: GCN CIRCULAR NUMBER: 22974 SUBJECT: GRB 180720A: Fermi GBM observation DATE: 18/07/20 14:39:48 GMT FROM: Elisabetta Bissaldi at INFN,Bari E. Bissaldi (Politecnico & INFN Bari) reports on behalf of the Fermi GBM Team: "At 05:06:02.06 UT on 20 July 2018, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 180720A (trigger 553755967 / 180720213), which was also detected by the AGILE/MCAL (Ursi et al. 2018, GCN 22970). The on-ground calculated location, using the GBM trigger data, is RA, Dec = 127.0, -0.4 (J2000 degrees), 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 74 degrees. The GBM light curve consists of single FRED-like peak with a duration (T90) of about 9 s (50-300 keV). The time-averaged spectrum from T0 to T0+10 s is best fit by a Band function with Epeak = 260 +/- 15 keV, alpha = -1.08 +/- 0.02 and beta = -2.13 +/- 0.06. The event fluence (10-1000 keV) in this time interval is (2.563 +/- 0.026)E-05 erg/cm^2. The 1-sec peak photon flux measured starting from T0+1.3 s in the 10-1000 keV band is 36.5 +/- 0.5 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."