S. Sabatini, M. Tavani, E. Pian, A. Bulgarelli, P. Caraveo, R. Viotti, M. F. Corcoran, A. Giuliani, C. Pittori, F. Verrecchia, S. Vercellone, S. Mereghetti, A. Argan, G. Barbiellini, F. Boffelli, P. W. Cattaneo, A. W. Chen, V. Cocco, F. D'Ammando, E. Costa, G. De Paris, E. Del Monte, G. Di Cocco, I. Donnarumma, Y. Evangelista, A. Ferrari, M. Feroci, M. Fiorini, T. Froysland, F. Fuschino, M. Galli, F. Gianotti, C. Labanti, I. Lapshov, F. Lazzarotto, P. Lipari, F. Longo, M. Marisaldi, M. Mastropietro, E. Morelli, E. Moretti, A. Morselli, L. Pacciani, A. Pellizzoni, F. Perotti, G. Piano, P. Picozza, M. Pilia, G. Porrovecchio, G. Pucella, M. Prest, M. Rapisarda, A. Rappoldi, A. Rubini, P. Soffitta, M. Trifoglio, A. Trois, E. Vallazza, V. Vittorini, A. Zambra, D. Zanello, P. Santolamazza, P. Giommi, S. Colafrancesco, L. A. Antonelli, L. Salotti
During its first 2 years of operation, the gamma-ray AGILE satellite
accumulated an extensive dataset for the Galactic plane. The data have been
monitored for transient sources and several gamma-ray sources were detected.
Their variability and possible association were studied. In this talk we will
focus on the results of extensive observations of the Carina Region during the
time period 2007 July - 2009 January, for a total livetime of ~130 days. The
region is extremely complex, hosting massive star formation, with the
remarkable colliding wind binary Eta Carinae, massive star clusters and HII
regions (e.g. NGC 3324, RCW49, Westerlund II) and a giant molecular cloud
extending over 150 pc (between l=284.7 and l=289). The Carina Nebula itself is
the largest and IR highest surface brightness nebula of the Southern emisphere.
We monitored several gamma ray sources in the Carina Region. In particular we
detect a gamma ray source (1AGL J1043-5931) consistent with the position of Eta
Carinae and report a remarkable 2-days gamma-ray flaring episode from this
source on 2008 Oct 11-13. If 1AGL J1043-5931 is associated with the Eta Car
system, our data provides the long sought first detection above 100 MeV of a
colliding wind binary.
View original:
http://arxiv.org/abs/1202.0444
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