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AGILE detection of the blazar W Comae in the gamma-ray energy band

ATel #1582; F. Verrecchia, Dario Gasparrini, Sara Cutini, B. Preger, C. Pittori, S. Colafrancesco, P. Giommi (ASDC), S. Vercellone, A. Chen, A. Giuliani (INAF/IASF Milan), I. Donnarumma, F. D'Ammando, L. Pacciani, G. Pucella, V. Vittorini (INAF/IASF Rome), F. Longo (INFN, Trieste), A. Bulgarelli (INAF/IASF Bologna), S. Mereghetti, A. Pellizzoni, F. Perotti, F. Fornari, M. Fiorini, P. Caraveo, A. Zambra (INAF/IASF Milan), F. Gianotti, M. Trifoglio, G. Di Cocco, C. Labanti, F. Fuschino, M. Marisaldi, M. Galli, (INAF/IASF Bologna), M. Tavani, E. Costa, M. Feroci, E. Del Monte, F. Lazzarotto, G. Piano, P. Soffitta, Y. Evangelista, I. Lapshov, M. Rapisarda, A. Argan, A. Trois, G. De Paris (INAF/IASF Rome), G. Barbiellini, E. Vallazza (INFN Trieste), P. Picozza, A. Morselli (INFN Roma-2), M. Prest, (Universita` dell'Insubria), P. Lipari, D. Zanello (INFN Roma-1), P. Cattaneo (INFN Pavia), L. Salotti (ASI), and E. Pian (INAF/OAT)
on 17 Jun 2008; 12:42 UT
Credential Certification: Carlotta Pittori (carlotta.pittori@asdc.asi.it)

Subjects: Gamma Ray, >GeV, AGN, Quasar

The AGILE Gamma Ray Imaging Detector (GRID) detected W Comae in the period between 2008-06-09 17:02 UT and 2008-06-15 02:17 UT during a Target of Opportunity re-pointing in response to the source detection in the TeV energy band (see Swordy et al., ATEL #1565). A preliminary maximum likelihood analysis shows a detection at a significance level of about 4 sigma, at energies above 100 MeV. The source is an approved target of the AGILE Announcement of Opportunity, Cycle 1 (PI: E. Pian).