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AGILE detection of the new unidentified gamma-ray source AGL J0906-1241

ATel #2552; C. Pittori, F. Verrecchia (ASDC), E. Striani (Univ. Roma Tor Vergata and INFN Roma), M. Tavani (INAF/IASF-Rm), S. Vercellone (INAF/IASF-Pa), S. Sabatini (INAF/IASF-Rm), A. Bulgarelli, F. Gianotti, M. Trifoglio (INAF/IASF-Bo), and Univ. Tor Vergata), A. Chen, A. Giuliani, S. Mereghetti, P. Caraveo, F. Perotti (INAF/IASF-Mi), I. Donnarumma (INAF/IASF-Rm), F. D'Ammando (Univ. Roma Tor Vergata and INAF/IASF-Rm), E. Del Monte, Y. Evangelista, M. Feroci, F. Lazzarotto, L. Pacciani, P. Soffitta, E. Costa, I. Lapshov, M. Rapisarda, A. Argan, G. Piano, G. Pucella, A. Trois, V. Vittorini (INAF/IASF-Rm), F. Fuschino, M. Galli, C. Labanti, M. Marisaldi, G. Di Cocco (INAF/IASF-Bo), A. Pellizzoni, M. Pilia (INAF/OA-Cagliari), G. Barbiellini, F. Longo, E. Moretti, E. Vallazza (INFN Trieste), A. Morselli, P. Picozza (INFN and Univ. Roma Tor Vergata), M. Prest (Universita` dell'Insubria), P. Lipari, D. Zanello (INFN and Univ. Roma Sapienza), P. W. Cattaneo, A. Rappoldi (INFN Pavia), F. Lucarelli, P. Santolamazza, S. Colafrancesco, P. Giommi (ASDC), L. Salotti (ASI)
on 13 Apr 2010; 15:14 UT
Distributed as an Instant Email Notice Request For Observations
Credential Certification: Carlotta Pittori (carlotta.pittori@asdc.asi.it)

Subjects: Gamma Ray, >GeV, Request for Observations, Transient

AGILE is detecting intense gamma-ray emission above 100 MeV from a new unidentified source, AGL J0906-1241 with Galactic coordinates (l, b) = (241.5, 22.4) +/- 0.8 deg (95% stat. c.l.) +/- 0.1 deg (syst.), (R.A.: 136.5, Dec: -12.7).

Integrating from 2010-04-11 05:00 UT to 2010-04-13 06:00 UT, a maximum likelihood analysis yields a detection at a significance level larger than 5 sigma, and a flux F = (3.8+/-1.2) 10-6 ph/cm2/s (E > 100 MeV).

No prominent extragalactic or Galactic source is known within the error box of AGL J0906-1241.

This measurement was obtained with AGILE observing a large portion of the sky in a spinning mode. Multifrequency observations of the AGL J0906-1241 error box are strongly encouraged.