TITLE: GCN CIRCULAR NUMBER: 7340 SUBJECT: GRB 080229B: Gamma Ray Burst Localization by SuperAGILE DATE: 08/03/01 02:48:00 GMT FROM: Marco Feroci at IASF/INAF Y. Evangelista, E. Del Monte, M. Feroci, E. Costa, I. Donnarumma, I. Lapshov, F. Lazzarotto, L. Pacciani, M. Rapisarda, P. Soffitta (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, L. A. Antonelli (ASDC) and L. Salotti (ASI), on bhealf of the AGILE Team, report: "SuperAGILE detected and localized a gamma ray burst on February 29th, at 23:33:01 UT. The event was approximately 13 degrees off-axis. The observed duration in the 20-60 keV energy range is above 100 seconds, with time structure. The burst was triggered and localized during on ground data processing. The burst position was reconstructed as (RA, Dec) (199.221 deg, -64.878 deg), which is: RA(J2000) = 13h 16m 53.13s Dec(J2000) = -64d 52' 40.8" 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." This message may be cited.