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The July 2010 outburst of the NLS1 PMN J0948+0022

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arxiv 1110.5649 v1 pith:XCOLRNU3 submitted 2011-10-25 astro-ph.HE

The July 2010 outburst of the NLS1 PMN J0948+0022

L. Foschini , G. Ghisellini , L. Maraschi , G. Tagliaferri , F. Tavecchio , Y. Y. Kovalev , Yu. A. Kovalev , M. L. Lister
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J. L. Richards F. D'Ammando D. J. Thompson D. Donato A. Tramacere E. Angelakis L. Fuhrmann I. Nestoras A. Falcone M. Hauser S. Wagner K. Mannheim O. Tibolla W. Max-Moerbeck V. Pavlidou A. C. S. Readhead M. A. Stevenson A. B. Pushkarev
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keywords j0948nls1energyactivitybandblazarblazarscampaign
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We report about the multiwavelength campaign on the Narrow-Line Seyfert 1 (NLS1) Galaxy PMN J0948+0022 (z = 0.5846) performed in 2010 July-September and triggered by high activity as measured by Fermi/LAT. The peak luminosity in the 0.1-100 GeV energy band exceeded, for the first time in this type of source, the value of 10^48 erg/s, a level comparable to the most powerful blazars. The comparison of the spectral energy distribution of the NLS1 PMN J0948+0022 with that of a typical blazar - like 3C 273 - shows that the power emitted at gamma rays is extreme.

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