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Increasing gamma-ray activity of the Blazar 3C 454.3 detected by AGILE

ATel #6234; A. Bulgarelli (INAF/IASF-Bo), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), V. Fioretti, F. Gianotti, M. Trifoglio (INAF/IASF-Bo), F. Verrecchia, F. Lucarelli, C. Pittori (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 14 Jun 2014; 17:24 UT
Credential Certification: Andrea Bulgarelli (bulgarelli@iasfbo.inaf.it)

Subjects: Gamma Ray, AGN, Blazar, Transient

Referred to by ATel #: 6236, 6237, 6246, 6266, 9186

The AGILE satellite detects a strong enhancement in gamma-ray activity from the FSRQ 3C 454.3 since the recent AGILE ATels #6182 and #6217, the NIR flare (ATel #6213) and the optical variability observed by MIRO (Atel #6232).

A maximum likelihood analysis of the AGILE-GRID data for the integration period between 2014-06-12 20:34:44 UT and 2014-06-14 01:16:29 UT, gives a flux F=(8.6 +/- 1.8)x 10^-6 ph/cm^-2/s^-1 (E > 100 MeV) at 9 sigma significance level.

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