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AGILE detection of a flare from the FSRQ 3C 279

ATel #6365; A. Bulgarelli (INAF/IASF-Bo), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), V. Fioretti, F. Gianotti, M. Trifoglio (INAF/IASF-Bo), C. Pittori, F. Verrecchia, F. Lucarelli (ASDC and INAF/OAR), S. Vercellone (INAF/IASF-Pa), G. Piano (INAF/IAPS), I. Donnarumma (INAF/IAPS), E. Striani (CIFS and INAF/IAPS), M. Cardillo (INAF/OA-Arcetri and INAF/IAPS), A. Giuliani, S. Mereghetti, P. Caraveo, F. Perotti (INAF/IASF-Mi), A. Chen (Wits University and INAF/IASF-Mi), S. Colafrancesco (INAF/OAR and Wits University), E. Del Monte, Y. Evangelista, M. Feroci, F. Lazzarotto, L. Pacciani, P. Soffitta, E. Costa, I. Lapshov, M. Rapisarda, A. Argan, G. Pucella, S. Sabatini, A. Trois, V. Vittorini (INAF/IAPS), F. Fuschino, M. Galli, C. Labanti, M. Marisaldi, G. Di Cocco (INAF/IASF-Bo), A. Pellizzoni (INAF/OA-Cagliari), M. Pilia (ASTRON, the Netherlands), G. Barbiellini, E. Vallazza (INFN Trieste), F. Longo (Univ. Trieste and INFN Trieste), A. Morselli, P. Picozza (INFN and Univ. Roma Tor Vergata), M. Prest (Univ. dell'Insubria), P. Lipari, D. Zanello (INFN and Univ. Roma Sapienza), P. W. Cattaneo, A. Rappoldi (INFN Pavia), P. Giommi (ASDC), L. Salotti, and G. Valentini (ASI)
on 3 Aug 2014; 14:34 UT
Credential Certification: Andrea Bulgarelli (bulgarelli@iasfbo.inaf.it)

Subjects: Gamma Ray, Transient

AGILE is now detecting transient gamma-ray emission above 100 MeV from a source positionally consistent with the FSRQ 3C 279.

Integrating from 2014-07-30 17:42 UT to 2014-08-02 17:23 UT, a preliminary maximum likelihood analysis yields a detection above 100 MeV positioned at Galactic coordinates (l,b) = (305.31, 57.02) +/- 0.6 (stat.) +/- 0.1 (syst.). The gamma-ray flux is F =(2.9 +/-0.8) x 10E-6 ph/cm2/sec with a significance level of 5.7 sigma.

This measurement was obtained with AGILE observing a large portion of the sky in spinning mode. Multifrequency observations of the source are strongly encouraged.