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GCN Circular 12341

Subject
GRB 110915B: SuperAGILE localization of a long GRB
Date
2011-09-15T21:29:14Z (12 years ago)
From
Marco Feroci at IASF/INAF <sa.grb@iasf-roma.inaf.it>
E. Del Monte, I. Donnarumma, Y. Evangelista, M. Feroci, F. Lazzarotto,
L. Pacciani, P. Soffitta, E. Costa, I. Lapshov, M. Rapisarda
(INAF/IASF Rome), G. Barbiellini, F. Longo, E. Moretti (INFN Trieste),
A. Bulgarelli, F. Gianotti, M. Trifoglio, G. Di Cocco, C. Labanti,
F. Fuschino, M. Marisaldi, M. Galli (INAF/IASF Bologna),
A. Giuliani, A. Chen, S. Mereghetti, F. Perotti, P. Caraveo (INAF/IASF
Milan), M. Tavani, M. Cardillo, G. Pucella, V. Vittorini, A. Argan, A. Trois,
G. Piano, S. Sabatini (INAF/IASF Rome), A. Pellizzoni, M. Pilia
(INAF/OA Cagliari), S. Vercellone, F. D'Ammando (INAF/IASF Palermo),
P. W. Cattaneo, A. Rappoldi (INFN Pavia), P. Picozza, A. Morselli,
E. Striani, (INFN Roma-2), M. Prest, E. Vallazza (Universita`
dell'Insubria), P. Lipari, D. Zanello (INFN Roma-1),
P. Giommi, C. Pittori, F. Lucarelli, P. Santolamazza, F. Verrecchia
(ASDC) and L. Salotti (ASI), on behalf of the AGILE Team, report:

"SuperAGILE detected a gamma ray burst on 15 September 2011, at 18:24:19 UT.
The event had a duration of about 18 s in the 20-60 keV energy range,
with a single peak structure. Assuming a crab-like energy spectrum,  
the peak flux on 1-s timescale was 7.73E-08 erg/cm2/s.
The burst position was reconstructed  as (RA, Dec)
(77.548, 1.925) deg, which is:

RA(J2000)  = 05h 10m 11.57s
Dec(J2000) = 1d 55' 30.98"

with an uncertainty of 4' 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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