GCN Circular 7571

Subject: GRB 080408: Gamma Ray Burst Localization by SuperAGILE

P. Soffitta, I. Donnarumma, E. Del Monte, M. Feroci, Y. Evangelista, 
E. Costa, I. Lapshov, F. Lazzarotto, L. Pacciani, M. Rapisarda
(INAF/IASF Rome), A. Giuliani, S. Vercellone, A. Chen, S. Mereghetti, A. 
Pellizzoni, F. Perotti, F. Fornari, M. Fiorini, P. Caraveo, 
A. Zambra (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,  
(ASDC) and L. Salotti (ASI), on bhealf of the AGILE Team, report:

"SuperAGILE detected and localized a gamma ray burst 
on April 8th, at 18:12:48 UT. The event was approximately 
13 degrees off-axis. The observed duration in the 20-60 keV
energy range is about 20 seconds, with a single pulse structure.
The burst was triggered and localized onboard, although distributed
after verfication on ground.  
The burst position was reconstructed as (RA, Dec) (114.678 deg, 
33.305 deg), which is:

RA(J2000) = 07h 38m 42.68s
Dec(J2000) = 33d 18' 16.7"

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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