[vsnet-grb-info 26955] GRB 201216B: AGILE detection of a burst

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  29058
SUBJECT: GRB 201216B: AGILE detection of a burst
DATE:    20/12/16 21:37:32 GMT
FROM:    Alessandro Ursi at INAF/IAPS  <alessandro.ursi at gmail.com>

A. Ursi (INAF/IAPS), C. Pittori (SSDC, and INAF/OAR), M. Tavani (INAF/IAPS,
and Univ. Roma Tor Vergata), A. Argan, M. Cardillo, C. Casentini, Y.
Evangelista, G. Piano (INAF/IAPS), F. Lucarelli, F. Verrecchia (SSDC, and
INAF/OAR), A. Bulgarelli, V. Fioretti, F. Fuschino, N. Parmiggiani
(INAF/OAS-Bologna), M. Marisaldi (INAF/OAS-Bologna, and Bergen University),
M. Pilia, A. Trois (INAF/OA-Cagliari), I. Donnarumma (ASI), F. Longo (Univ.
Trieste and INFN Trieste), A. Giuliani (INAF/IASF-Mi), report on behalf of
the AGILE Team:

The AGILE satellite detected a burst at T0 = 2020-12-16 14:46:35.66 +/-
0.01 s (UTC).

The burst is clearly visible in the AGILE scientific ratemeters of the
SuperAGILE (SA; 20-60 keV), MiniCALorimeter (MCAL; 0.4-100 MeV), and
AntiCoincidence (AC; 50-200 keV) detectors. The event lasted about ~10 s
and it released a total number of 1600 counts in the SA detector (above a
background rate of 100 Hz), 1500 counts in the MCAL detector (above a
background rate of 1220 Hz), and 37500 counts in the AC detector (above a
background rate of 3500 Hz). The AGILE ratemeter light curves can be found
at http://www.agilescienceapp.it/notices/GRB_201216B_AGILE_RM.png .

The event also triggered a partial high time resolution MCAL data
acquisition, where it released ~2500 counts (in the 0.4-100 MeV energy
range), above a background rate of 570 Hz. The MCAL light curve can be
found at
http://www.agilescienceapp.it/notices/GRB_070900_535214795.665353.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.
Automatic MCAL GRB alert Notices can be found at:
https://gcn.gsfc.nasa.gov/agile_mcal.html.