Enhanced gamma-ray emission from the FSRQ CTA 102 detected by AGILE

ATel #10386; G. Minervini (INAF/IAPS), A. Bulgarelli (INAF/IASF-Bo), C. Pittori, F. Verrecchia (ASDC and INAF/OAR), G. Piano (INAF/IAPS), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), P. Munar-Adrover (INAF/IAPS), I. Donnarumma (INAF/IAPS), V. Fioretti, A. Zoli (INAF/IASF-Bo), F. Lucarelli (ASDC and INAF/OAR), S. Vercellone (INAF/OA-Brera), 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), Paoletti (East Windsor RSD Hightstown and INAF/IAPS), A. Antonelli (ASDC and INAF/OAR), P. Giommi (ASDC), L. Salotti, G. Valentini, and F. D'Amico (ASI)
on 17 May 2017; 17:57 UT
Credential Certification: Gabriele Minervini (gabriele.minervini@iaps.inaf.it)

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

AGILE is detecting since last week increased gamma-ray emission above 100 MeV from a source positionally consistent with the FSRQ blazar CTA 102 [at Galactic coordinates (l,b)= (77.4 , -38) +/- 0.6 deg (stat. 95% c.l.) +/- 0.1 deg (syst.), (RA, Dec) = (337.7, 12.2) (J2000)]. Integrating from 2017-05-15 01:00:00 UT to 2017-05-17 01:00:00 UT a preliminary maximum likelihood analysis yields a detection with a significance of 6.6 sigma and flux F(E>100 MeV) = ( 4.7 +/- 1.2) x 10^-6 ph cm^-2 s^-1.

Recent activity of CTA102 was reported in ATel #10330 in the optical band, and in ATel #10292 in the gamma-ray energy band.

This measurement was obtained with AGILE observing a large portion of the sky in spinning mode.

Multifrequency observations of the CTA 102 region are strongly encouraged.