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AGILE detection of the transient gamma-ray source AGL J1037-5708

ATel #3059; A. Bulgarelli, F. Gianotti, M. Trifoglio (INAF/IASF-Bo), F. Lucarelli, F. Verrecchia, C. Pittori (ASDC), E. Striani, M. Tavani (INAF/IASF-Rm, and Univ. Tor Vergata), S. Vercellone (INAF/IASF-Pa), A. Chen, A. Giuliani, S. Mereghetti, P. Caraveo, F. Perotti (INAF/IASF-Mi), I. Donnarumma (INAF/IASF-Rm), F. D'Ammando (INAF/IASF-Pa), 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, S. Sabatini, 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), P. Santolamazza, P. Giommi (ASDC), L. Salotti (ASI)
on 30 Nov 2010; 20:12 UT
Distributed as an Instant Email Notice Request For Observations
Credential Certification: Marco Tavani (tavani@iasf-roma.inaf.it)

Subjects: Gamma Ray, >GeV, Transient

AGILE is detecting intense gamma-ray emission above 100 MeV from an unidentified source near the Galactic plane, AGL J1037-5708, of Galactic coordinates (l, b) = (285.5, 1.1) ± 0.5 deg (95% stat.) ± 0.1 deg (syst.).

Integrating from 2010-11-27 21:18 UT to 2010-11-30 14:08 UT, a maximum likelihood analysis yields a detection at a significance level larger than 5 sigma, and a flux above 300 x 10E-8 ph/cm2/s (E > 100 MeV).

We notice that the HMXRB source 4U 1036-56 is within the AGL J1037-5708 error box.

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

Multifrequency observations of the AGL J1037-5708 error box are strongly encouraged.