[vsnet-grb-info 27301] GRB 210205B: AGILE/MCAL detection of a burst

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  29404
SUBJECT: GRB 210205B: AGILE/MCAL detection of a burst
DATE:    21/02/05 20:09:44 GMT
FROM:    Alessandro Ursi at INAF/IAPS  <alessandro.ursi at gmail.com>

A. Ursi (INAF/IAPS), V. Fioretti (INAF/OAS-Bologna), F. Longo (Univ.
Trieste and INFN Trieste), M. Tavani (INAF/IAPS, and Univ. Roma Tor
Vergata), A. Argan, M. Cardillo, C. Casentini, Y. Evangelista, G. Piano,
(INAF/IAPS), F. Lucarelli, C. Pittori, F. Verrecchia (SSDC, and INAF/OAR),
A. Bulgarelli, 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), A. Giuliani (INAF/IASF-Mi), report
on behalf of the AGILE Team:

The AGILE Mini-CALorimeter (MCAL) detected a short burst at T0 = 2021-02-05
14:46:09.14 +/- 0.01 s (UTC).

The event lasted about 0.10 s and released a total number of ~94 counts in
the detector (in the 0.4-100 MeV energy range), above an average background
rate of 516 Hz, corresponding to a peak significance of ~8 sigma.

The MCAL light curve shows a single peak and can be found at
http://www.agilescienceapp.it/notices/071632_GRB_MCAL_539621169.143570.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.