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GCN Circular 8305

Subject
GRB081001: SuperAGILE Localization of a long GRB
Date
2008-10-01T22:55:08Z (16 years ago)
From
Marco Feroci at IASF/INAF <feroci@iasf-roma.inaf.it>
F. Lazzarotto, E. Del Monte, I. Donnarumma, Y. Evangelista, M. Feroci,
L. Pacciani, P. Soffitta, E. Costa, I. Lapshov, M. Rapisarda
(INAF/IASF Rome), A. Giuliani, S. Vercellone, A. Chen,
S. Mereghetti, A. Pellizzoni, F. Perotti, F. Fornari, P.
Caraveo (INAF/IASF Milan), A. Bulgarelli, F. Gianotti,
M. Trifoglio, G. Di Cocco, C. Labanti, F. Fuschino, M. Marisaldi,
M. Galli, (INAF/IASF Bologna), M. Tavani, G. Pucella, F. D'Ammando, V.
Vittorini, A. Argan, A. Trois (INAF/IASF Rome), G. Barbiellini,
F. Longo (INFN Trieste), P. Picozza, A. Morselli (INFN Roma-2),
M. Prest, E. Vallazza (Universita` dell'Insubria), P. Lipari,
D. Zanello (INFN Roma-1), and  P. Giommi, C. Pittori, B. Preger,
P. Santolamazza, F. Verrecchia (ASDC) and L. Salotti (ASI),
on behalf of the AGILE Team, report:

"SuperAGILE detected a gamma ray burst on 1st October 2008, at 21:17:42 
UT. The event had a duration of about 40 s in the 20-60 keV energy range,
with a first 10-s long bright peak, followed by a second broad peak about 
20s apart. Assuming a Crab-like energy spectrum, the peak flux on 1-s 
timescale was about 6 ph/cm2/s or 5E-07 erg/cm2/s (20-60 keV).
The burst position was reconstructed  as (RA, Dec)
(276.576 deg, -8.754 deg), which is:

RA(J2000)  = 18h 26m 18.34s
Dec(J2000) = -8d 45' 14.65"

with an uncertainty of 3' radius. The given uncertainty accounts
for both the statistical and systematic errors.

An analysis of the AGILE Gamma Ray Imager (GRID) data is in progress."

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