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Increasing gamma-ray activity from the FSRQ 4C +40.25

ATel #8344; G. Piano, P. Munar Adrover (INAF/IAPS), C. Pittori (ASDC and INAF/OAR), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), A. Bulgarelli, V. Fioretti (INAF/IASF-Bo), F. Verrecchia, F. Lucarelli (ASDC and INAF/OAR), I. Donnarumma (INAF/IAPS), S. Vercellone (INAF/IASF-Pa), E. Striani (CIFS and INAF/IAPS), M. Cardillo (INAF/OA-Arcetri and INAF/IAPS), F. Gianotti, M. Trifoglio (INAF/IASF-Bo), A. Giuliani, S. Mereghetti, P. Caraveo, F. Perotti (INAF/IASF-Mi), A. Chen (Wits University), A. Argan, E. Costa, E. Del Monte, Y. Evangelista, M. Feroci, F. Lazzarotto, I. Lapshov, L. Pacciani, P. Soffitta, S. Sabatini, V. Vittorini (INAF/IAPS), G. Pucella, M. Rapisarda (ENEA-Frascati), G. Di Cocco, F. Fuschino, M. Galli, C. Labanti, M. Marisaldi (INAF/IASF-Bo), A. Pellizzoni, M. Pilia, A. Trois (INAF/OA-Cagliari), 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), S. Colafrancesco (INAF/OAR and Wits University), N. Parmiggiani (University of Modena and Reggio Emilia), A. Ferrari (Univ. Torino and CIFS), A. Antonelli (ASDC and INAF/OAR), P. Giommi (ASDC), L. Salotti, G. Valentini, and F. D'Amico (ASI)
on 28 Nov 2015; 19:44 UT
Credential Certification: Giovanni Piano (giovanni.piano@iaps.inaf.it)

Subjects: Gamma Ray, >GeV, AGN, Blazar, Quasar, Transient

The AGILE satellite is detecting a bright gamma-ray source consistent with the position of the FSRQ 4C +40.25 (redshift z=1.254). Recently Fermi-LAT and Swift reported a flaring activity from this blazar with peak emission on November 24, 2015 (ATel #8339).

Integrating from 2015-11-26 10:00 UT to 2015-11-28 10:00 UT, a maximum likelihood analysis of AGILE data yields the detection of the source with a flux of (3 +/- 1) x 10^-6 ph/cm2/s (E > 100 MeV) at a significance well above 5 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.