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Discovery of New Gamma-Ray Pulsars with AGILE

A. Pellizzoni 1 M. Pilia 1 A. Possenti 1 A. Chen A. Giuliani 2 A. Trois 3 P. Caraveo 2 E. del Monte 3 F. Fornari 2 F. Fuschino 4 S. Mereghetti 2 M. Tavani 3 A. Argan 3 M. Burgay 1 Ismaël Cognard 5 A. Corongiu 5 E. Costa 3 N. d'Aminco 1 A. de Luca 2 P. Esposito 2 Y. Evangelista 3 M. Feroci 3 S. Johnston 6 M. Kramer 7 F. Longo 8 M. Marisaldi 4 Gilles Theureau 5, 9 P. Weltevrede 6 G. Barbiellini 8 F. Boffelli 10 A. Bulgarelli 4 P.W. Cattaneo 10 Valentina Cocco 3 F. D’ammando 3 G. de Paris 3 G. Di Cocco 4 I. Donnarumma 3 M. Fiorini T. Froysland M. Galli F. Gianotti 4 C. Labanti 4 I. Lapshov 3 F. Lazzarotto 3 P. Lipari T. Mineo A. Morselli 11 L. Pacciani 3 F. Perotti G. Piano P. Picozza 11 M. Prest G. Pucella 3 M. Rapisarda A. Rappoldi 10 S. Sabatini 3 P. Soffitta 3 M. Trifoglio 4 E. Vallazza 8 S. Vercellone 2 V. Vittorini A. Zambra 2 D. Zanello C. Pittori 12 F. Verrecchia 12 B. Preger 12 P. Santolamazza 12 P. Giommi 12 L. Salotti 12 F. Bignami 13
Abstract : Using gamma-ray data collected by the Astro-rivelatore Gamma ad Immagini LEggero (AGILE) satellite over a period of almost one year (from 2007 July to 2008 June), we searched for pulsed signals from 35 potentially interesting radio pulsars, ordered according to F_{γ}∝ √{\dot{E}} d^{-2} and for which contemporary or recent radio data were available. AGILE detected three new top-ranking nearby and Vela-like pulsars with good confidence both through timing and spatial analysis. Among the newcomers we find pulsars with very high rotational energy losses, such as the remarkable PSR B1509 - 58 with a magnetic field in excess of 1013 Gauss, and PSR J2229 + 6114 providing a reliable identification for the previously unidentified EGRET source 3EG 2227 + 6122. Moreover, the powerful millisecond pulsar B1821 - 24, in the globular cluster M28, is detected during a fraction of the observations. Four other promising gamma-ray pulsar candidates, among which is the notable J2043 + 2740 with an age in excess of 1 million years, show a possible detection in the timing analysis only and deserve confirmation.
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A. Pellizzoni, M. Pilia, A. Possenti, A. Chen, A. Giuliani, et al.. Discovery of New Gamma-Ray Pulsars with AGILE. The Astrophysical journal letters, Bristol : IOP Publishing, 2009, 695 (1), pp.L115-L119. ⟨10.1088/0004-637X/695/1/L115⟩. ⟨insu-02882253⟩



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