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Binary Millisecond Pulsar Discovery via Gamma-Ray Pulsations

H. J. Pletsch L. Guillemot H. Fehrmann B. Allen M. Kramer C. Aulbert Markus Ackermann Marco Ajello A. de Angelis W. B. Atwood Luca Baldini J. Ballet11 Guido Barbiellini D. Bastieri K. Bechtol R. Bellazzini A. W. Borgland E. Bottacini T. J. Brandt 1 J. Bregeon M. Brigida R. Buehler S. Buson G. A. Caliandro R. A. Cameron P. A. Caraveo J. M. Casandjian 2 C. Cecchi Ö. Çelik E. Charles 3 R. C. G. Chaves C. C. Cheung J. Chiang S. Ciprini R. Claus J. Cohen-Tanugi 4 J. Conrad S. Cutini F. d'Ammando C. D. Dermer S. W. Digel P. S. Drell A. Drlica-Wagner R. Dubois D. Dumora 5 C. Favuzzi E. C. Ferrara A. Franckowiak Y. Fukazawa P. Fusco F. Gardano N. Gehrels S. Germani N. Giglietto F. Giordano M. Giroletti G. Godfrey I. A. Grenier 2 M.-H. Grondin J. E. Grove S. Guiriec D. Hadasch Y. Hanabata A. K. Harding P. R. den Hartog M. Hayashida E. Hays A. B. Hill7 X. Hou 5 R. E. Hughes G. Jóhannesson M. S. Jackson T. Jogler A. S. Johnson W. N. Johnson J. Kataoka M. Kerr J. Knödlseder 1 M. Kuss J. Lande 1 S. Larsson L. Latronico M. Lemoine-Goumard 5 F. Longo F. Loparco M. N. Lovellette P. Lubrano F. Massaro M. Mayer M. N. Mazziotta J. E. Mcenery J. Mehault 4 P. F. Michelson W. Mitthumsiri T. Mizuno M. E. Monzani A. Morselli I. V. Moskalenko S. Murgia T. Nakamori R. Nemmen E. Nuss 4 M. Ohno T. Ohsugi N. Omodei M. Orienti E. Orlando F. de Palma D. Paneque J. S. Perkins F. Piron 4 G. Pivato T.A. Porter S. Rainò R. Rando P. S. Ray M. Razzano A. Reimer O. Reimer T. Reposeur 5 S. Ritz R. W. Romani C. Romoli D.A. Sanchez P. M. Saz Parkinson A. Schulz C. Sgrò1 E. Do Couto E Silva E. J. Siskind David Stanley Smith 5 G. Spandre P. Spinelli D. J. Suson H. Takahashi T. Tanaka J. B. Thayer J. G. Thayer D. J. Thompson L. Tibaldo M. Tinivella E. Troja T. L. Usher J. Vandenbroucke V. Vasileiou 4 G. Vianello V. Vitale A. P. Waite B. L. Winer K. S. Wood M. Wood Z. Yang S. Zimmer
Abstract : Millisecond pulsars, old neutron stars spun up by accreting matter from a companion star, can reach high rotation rates of hundreds of revolutions per second. Until now, all such "recycled" rotation-powered pulsars have been detected by their spin-modulated radio emission. In a computing-intensive blind search of gamma-ray data from the Fermi Large Area Telescope (with partial constraints from optical data), we detected a 2.5-millisecond pulsar, PSR J1311−3430. This unambiguously explains a formerly unidentified gamma-ray source that had been a decade-long enigma, confirming previous conjectures. The pulsar is in a circular orbit with an orbital period of only 93 minutes, the shortest of any spin-powered pulsar binary ever found.
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H. J. Pletsch, L. Guillemot, H. Fehrmann, B. Allen, M. Kramer, et al.. Binary Millisecond Pulsar Discovery via Gamma-Ray Pulsations. Science, American Association for the Advancement of Science, 2012, 338, pp.1314-1317. ⟨10.1126/science.1229054⟩. ⟨in2p3-00769556⟩

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