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AGILE confirmation of the increasing gamma-ray activity from PKS 2233-148

ATel #4154; F. Lucarelli, F. Verrecchia, C. Pittori (ASDC and INAF/OAR), A. Bulgarelli, F. Gianotti, M. Trifoglio (INAF/IASF-Bo), G. Piano (INAF/IAPS), E. Striani (Univ. Roma Tor Vergata), M. Cardillo (INAF/IAPS and Univ. Roma Tor Vergata), I. Donnarumma (INAF/IAPS), M. Tavani (INAF/IAPS, and Univ. Roma Tor Vergata), S. Vercellone (INAF/IASF-Pa), A. Chen, A. Giuliani, S. Mereghetti, P. Caraveo, F. Perotti (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, F. Longo, E. Vallazza (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. Santolamazza (ASDC and INAF/OAR), P. Giommi (ASDC), L. Salotti, and G. Valentini (ASI)
on 6 Jun 2012; 17:15 UT
Credential Certification: Francesco Verrecchia (francesco.verrecchia@asdc.asi.it)

Subjects: Gamma Ray, >GeV, Request for Observations, AGN, Blazar

Referred to by ATel #: 4222, 4238

AGILE confirms the increasing gamma-ray activity from the BL Lac object PKS 2233-148 (also known as BZB J2236-1433 (Massaro et al., 2011, A&A 495)) as reported by Fermi-LAT in Atel #4152.

Integrating from 2012-06-03 10:00 UT to 2012-06-05 22:00 UT, a maximum likelihood analysis yields a detection at a significance level above 5 sigma and a flux of (240 +/- 70) x 10E-8 ph/cm2/s (E > 100 MeV) at Galactic coordinates (l,b)=(48.47, -56.95) +/- 0.9 deg (95% stat.) +/- 0.1 deg (syst.) (R.A., Dec.= 339.97, -14.61 deg, J2000). The peak of the AGILE excess is found at around 0.5 deg from the position of PKS 2233-148 reported in Petrov et al. 2008 (AJ, 136, 580).

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

Multifrequency observations of PKS 2233-148 are strongly encouraged.