[vsnet-grb-info 19738] GRB 170825A: AGILE/MCAL Detection

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  21689
SUBJECT: GRB 170825A: AGILE/MCAL Detection
DATE:    17/08/25 12:23:09 GMT
FROM:    Francesco Verrecchia at ASDC  <francesco.verrecchia at ssdc.asi.it>

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

The AGILE Mini-CALorimeter (MCAL) detected a short burst at
T0 = 2017-08-25 02:19:49 UTC included in the acquisition (following an
internal trigger) started at T1=02:21:27 UTC and ended at 02:21:34 UTC.
The MCAL light curve shows a sharp single peak, that lasted about 32 ms
and released a total number of ~48 counts at E>400 keV in the detector,
above an average background rate of 19 counts/32ms.

The AGILE-MCAL detector has a full solid angle acceptance, and is
operational in the range 0.4 - 100 MeV.