TITLE:   GCN CIRCULAR
NUMBER:  35075
SUBJECT: GRB 231117A: AGILE detection of a bright short burst
DATE:    23/11/17 11:45:06 GMT
FROM:    Paolo Walter Cattaneo at INFN Pavia <paolo.cattaneo@pv.infn.it>

P.W. Cattaneo (INFN Pavia), F. Verrecchia (SSDC, and INAF/OAR), 
F. Longo (Univ. Trieste, and INFN Trieste), C. Pittori (SSDC, and INAF/OAR), 
C. Casentini (INAF/IAPS), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata),
A. Argan, M. Cardillo, Y. Evangelista, L. Foffano, G. Piano (INAF/IAPS),
A. Addis, L. Baroncelli, A. Bulgarelli, A. Ciabattoni, A. Di Piano, V. Fioretti 
(INAF/OAS-Bologna), G. Panebianco (Univ. Bologna - INAF/OAS Bologna), 
N. Parmiggiani (INAF/OAS-Bologna), F. Lucarelli (SSDC, and INAF/OAR),
M. Marisaldi (INAF/OAS-Bologna, and Bergen University), M. Pilia, A. Trois
(INAF/OA-Cagliari), A. Ursi (ASI and INAF/IAPS), I. Donnarumma, E. Menegoni 
(ASI), A. Giuliani (INAF/IASF-Mi), F. Cutrona (Univ. Milano Bicocca) and P. 
Tempesta (TeleSpazio) report on behalf of the AGILE Team:

The AGILE satellite detected the short GRB 231117A at T0 = 2023-11-17
03:03:20.50 (UT) , reported by Swift (GCN #35071) and AstroSat (GCN #35072).

A preliminary analysis of the AGILE minicalorimeter (MCAL) triggered data
found a  burst at T_mcal = 2023-11-17 03:03:20 +/- 0.01 s (UTC).

The event lasted about 0.16 s and released a total number of 222 counts
in the detector (in the 0.4-100 MeV energy range), above an average
background rate of 364 counts/s.

The light curve can be found at:
http://www.agilescienceapp.it/notices/086277-086279_GRB_MCAL_627274999.673711.png.

The AGILE-MCAL detector is a CsI detector with a 4 pi FoV, sensitive in
the energy range 0.4-100 MeV. Additional analysis of AGILE data is in progress.