NOUTSOS, A.; ABDO, A.A.; ACKERMANN, Markus; AJELLO, Marco; BALLET, Jean; BARBIELLINI, Guido; BARING, Matthew G.; BASTIERI, D.; BECHTOL, K.; BELLAZZINI, R.; BERENJI, B.; BONAMENTE, E.; BORGLAND, A. W.; BREGEON, J.; BREZ, A.; BRIGIDA, M.; BRUEL, Pascal; BUEHLER, R.; BUSETTO, G.; CALIANDRO, G. A.; CAMERON, R. A.; CAMILO, F.; CARAVEO, P. A.; CASANDJIAN, J. M.; CECCHI, C.; CELIK, O.; CHATY, S.; CHEKHTMAN, A.; CHIANG, J.; CIPRINI, S.; CLAUS, R.; COGNARD, Ismaël; COHEN-TANUGI, J.; COLAFRANCESCO, S.; CUTINI, S.; DERMER, C. D.; DE PALMA, F.; DRELL, P. S.; DUMORA, D.; ESPINOZA, C. M.; FAVUZZI, C.; FERRARA, E. C.; FOCKE, W. B.; FRAILIS, M.; FREIRE, P. C. C.; FUKAZAWA, Y.; FUNK, S.; FUSCO, P.; GARGANO, F.; GERMANI, S.; GIGLIETTO, N.; GIORDANO, F.; GIROLETTI, M.; GODFREY, G.; GRANDI, P.; GRENIER, I. A.; GROVE, J. E.; GUILLEMOT, L.; GUIRIEC, S.; HARDING, A. K.; HUGHES, R. E.; JACKSON, M. S.; JOHANNESSON, G.; JOHNSON, A. S.; JOHNSON, T. J.; JOHNSON, W. N.; JOHNSTON, S.; KAMAE, T.; KATAGIRI, H.; KATAOKA, J.; KNÖDLSEDER, Jürgen; KRAMER, M.; KUSS, M.; LANDE, J.; LEE, S. -H.; LONGO, F.; LOPARCO, F.; LOVELLETTE, M. N.; LUBRANO, P.; LYNE, A. G.; MAKEEV, A.; MARELLI, M.; MAZZIOTTA, M. N.; MCENERY, J. E.; MEHAULT, J.; MICHELSON, P. F.; MIZUNO, T.; MONTE, C.; MONZANI, M. E.; MORSELLI, A.; MOSKALENKO, I. V.; MURGIA, S.; NAUMANN-GODO, M.; NOLAN, P. L.; NUSS, E.; OHSUGI, T.; OKUMURA, A.; OMODEI, N.; ORLANDO, E.; ORMES, J. F.; PANETTA, J. H.; PARENT, D.; PELASSA, V.; PEPE, M.; PERSIC, M.; PESCE-ROLLINS, M.; PIRON, F.; PORTER, T. A.; RAIN, S.; RAY, P. S.; RAZZANO, M.; REIMER, A.; REIMER, O.; REPOSEUR, T.; ROMANI, R. W.; SADROZINSKI, H. F. -W.; SANDER, A.; PARKINSON, P. M. Saz; SGRO, C.; SISKIND, E. J.; SMITH, D. A.; SMITH, P. D.; SPANDRE, G.; SPINELLI, P.; STAPPERS, B. W.; STRICKMAN, M. S.; SUSON, D. J.; TAKAHASHI, H.; TANAKA, T.; THEUREAU, Gilles; THOMPSON, D. J.; THORSETT, S. E.; TIBOLLA, O.; TORRES, D. F.; TRAMACERE, A.; USHER, T. L.; VANDENBROUCKE, J.; VIANELLO, G.; VILCHEZ, N.; VILLATA, M.; VITALE, V.; VON KIENLIN, A.; WAITE, A. P.; WANG, P.; WATTERS, K.; WELTEVREDE, P.; WINER, B. L.; WOOD, K. S.; ZIEGLER, M.

doi:10.1088/0004-637X/728/2/77

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The Astrophysical Journal. 2011-02-20, vol. 728, p. 77

American Astronomical Society

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We report on the first year of Fermi gamma-ray observations of pulsed high-energy emission from the old PSR J2043+2740. The study of the gamma-ray efficiency of such old pulsars gives us an insight into the evolution of pulsars' ability to emit in gammma rays as they age. The gamma-ray lightcurve of this pulsar above 0.1 GeV is clearly defined by two sharp peaks, 0.353+/-0.035 periods apart. We have combined the gamma-ray profile characteristics of PSR J2043+2740 with the geometrical properties of the pulsar's radio emission, derived from radio polarization data, and constrained the pulsar-beam geometry in the framework of a Two Pole Caustic and an Outer Gap model. The ranges of magnetic inclination and viewing angle were determined to be {alpha,zeta}~{52-57,61-68} for the Two Pole Caustic model, and {alpha,zeta}~{62-73,74-81} and {alpha,zeta}~{72-83,60-75} for the Outer Gap model. Based on this geometry, we assess possible birth locations for this pulsar and derive a likely proper motion, sufficiently high to be measurable with VLBI. At a characteristic age of 1.2 Myr, PSR J2043+2740 is the third oldest of all discovered, non-recycled, gamma-ray pulsars: it is twice as old as the next oldest, PSR J0357+32, and younger only than the recently discovered PSR J1836+5925 and PSR J2055+25, both of which are at least 5 and 10 times less energetic, respectively.< Réduire

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pulsars: individual (PSR J2043 + 2740)

gamma rays: stars

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Radio and Gamma-Ray Constraints on the Emission Geometry and Birthplace of PSR J2043+2740

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