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We describe a comprehensive pulsar monitoring campaign for the Large Area Telescope (LAT) on the {\em Fermi Gamma-ray Space Telescope} (formerly GLAST). The detection and study of pulsars in gamma rays give insights into the populations of…

Using the 100-m Effelsberg radio telescope operating at 1.36 GHz, we have performed a targeted radio pulsar survey of 289 unassociated gamma-ray sources discovered by the Large Area Telescope (LAT) aboard the Fermi satellite and published…

The Fermi Large Area Telescope (LAT) has revolutionized high-energy (HE) astronomy, and is making enormous contributions particularly to gamma-ray pulsar science. As a result of the many new pulsar discoveries, the gamma-ray pulsar…

High Energy Astrophysical Phenomena · Physics 2011-12-15 C. Venter , T. J. Johnson , A. K. Harding

Fermi Large Area Telescope (LAT) has recently detected 8 gamma-ray millisecond pulsars (MSPs), providing an unprecedented opportunity to probe the magnetospheres of these low-spin-down pulsars. We performed 3D emission modeling, including…

High Energy Astrophysical Phenomena · Physics 2009-11-26 C. Venter , A. K. Harding , L. Guillemot

The Large Area Telescope on the recently launched Fermi Gamma-ray Space Telescope (formerly GLAST), with its large field of view and effective area, combined with its excellent timing capabilities, is poised to revolutionize the field of…

Astrophysics of Galaxies · Physics 2019-08-14 P. M. Saz Parkinson

We performed deep observations to search for radio pulsations in the directions of 375 unassociated Fermi Large Area Telescope (LAT) gamma-ray sources using the Giant Metrewave Radio Telescope (GMRT) at 322 and 607 MHz. In this paper we…

We compare radio profile widths of young, energetic gamma-ray-detected and non-gamma-ray-detected pulsars. We find that the latter typically have wider radio profiles, with the boundary between the two samples exhibiting a dependence on the…

High Energy Astrophysical Phenomena · Physics 2016-11-15 Simon C. Rookyard , Patrick Weltevrede , Simon Johnston , Matthew Kerr

Millisecond pulsars (MSPs) represent nearly half of the more than 160 currently known $\gamma$-ray pulsars detected by the Large Area Telescope on the \textit{Fermi} satellite, and a third of all known MSPs are seen in $\gamma$ rays. The…

High Energy Astrophysical Phenomena · Physics 2016-03-02 L. Guillemot , D. A. Smith , H. Laffon , G. H. Janssen , I. Cognard , G. Theureau , G. Desvignes , E. C. Ferrara , P. S. Ray

We have discovered five millisecond pulsars (MSPs) in a survey of 14 unidentified Fermi-LAT sources in the southern sky using the Parkes radio telescope. PSRs J0101-6422, J1514-4946, and J1902-5105 reside in binaries, while PSRs J1658-5324…

Over thirteen times more gamma-ray pulsars have now been studied with the Large Area Telescope on NASA's Fermi satellite than the ten seen with the Compton Gamma-Ray Observatory in the nineteen-nineties. The large sample is diverse,…

High Energy Astrophysical Phenomena · Physics 2015-06-17 Xian Hou , David A. Smith , Thierry Reposeur , Romain Rousseau

Guillemot et al. recently reported the discovery of $\gamma$-ray pulsations from the 22.7ms pulsar (pulsar A) in the famous double pulsar system J0737-3039A/B. The $\gamma$-ray light curve (LC) of pulsar A has two peaks separated by…

High Energy Astrophysical Phenomena · Physics 2014-11-05 A. S. Seyffert , C. Venter , A. K. Harding , T. J. Johnson

We use Fermi Gamma-ray Space Telescope detections and upper limits on non-recycled pulsars obtained from the Large Area Telescope (LAT) to constrain how the gamma-ray luminosity L depends on the period P and the period derivative \dot{P}.…

Solar and Stellar Astrophysics · Physics 2015-06-17 B. B. P. Perera , M. A. McLaughlin , J. M. Cordes , M. Kerr , T. H. Burnett , A. K. Harding

We searched for radio pulsars in 25 of the non-variable, unassociated sources in the Fermi LAT Bright Source List with the Green Bank Telescope at 820 MHz. We report the discovery of three radio and gamma-ray millisecond pulsars (MSPs) from…

Searches for millisecond pulsars (which we here loosely define as those with periods $<$ 20 ms) in the Galactic field have undergone a renaissance in the past five years. New or recently refurbished radio telescopes utilizing cooled…

Astrophysics of Galaxies · Physics 2015-06-16 K. Stovall , D. R. Lorimer , R. S Lynch

The 2nd Fermi-LAT pulsar catalog includes 117 gamma-ray pulsars, of which roughly one third are millisecond pulsars (MSPs) while the remaining two thirds split evenly into young radio-loud and radio-quiet pulsars. Although this large…

High Energy Astrophysical Phenomena · Physics 2015-06-12 Matthew Kerr , the Fermi-LAT Collaboration

We investigate the radio and gamma-ray beaming properties of normal and millisecond pulsars by selecting two samples from the known populations. The first, Sample G, contains pulsars which are detectable in blind searches of gamma-ray data…

High Energy Astrophysical Phenomena · Physics 2015-05-18 V. Ravi , R. N. Manchester , G. Hobbs

This paper presents the results of a joint radio and gamma-ray timing campaign on the nine millisecond pulsars (MSPs) discovered as part of the L-band targeted survey of Fermi-LAT sources performed in the context of the Transients and…

Using LOFAR, we have performed a very-low-frequency (115-155 MHz) radio survey for millisecond pulsars (MSPs). The survey targeted 52 unidentified Fermi $\gamma$-ray sources. Employing a combination of coherent and incoherent dedispersion,…

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…

Astrophysics of Galaxies · Physics 2015-05-20 A. Noutsos , A. A. Abdo , M. Ackermann , M. Ajello , J. Ballet , G. Barbiellini , M. G. Baring , D. Bastieri , K. Bechtol , R. Bellazzini , B. Berenji , E. Bonamente , A. W. Borgland , J. Bregeon , A. Brez , M. Brigida , P. Bruel , R. Buehler , G. Busetto , G. A. Caliandro , R. A. Cameron , F. Camilo , P. A. Caraveo , J. M. Casandjian , C. Cecchi , O. Celik , S. Chaty , A. Chekhtman , J. Chiang , S. Ciprini , R. Claus , I. Cognard , J. Cohen-Tanugi , S. Colafrancesco , S. Cutini , C. D. Dermer , F. de Palma , P. S. Drell , D. Dumora , C. M. Espinoza , C. Favuzzi , E. C. Ferrara , W. B. Focke , M. Frailis , P. C. C. Freire , Y. Fukazawa , S. Funk , P. Fusco , F. Gargano , S. Germani , N. Giglietto , F. Giordano , M. Giroletti , G. Godfrey , P. Grandi , I. A. Grenier , J. E. Grove , L. Guillemot , S. Guiriec , A. K. Harding , R. E. Hughes , M. S. Jackson , G. Johannesson , A. S. Johnson , T. J. Johnson , W. N. Johnson , S. Johnston , T. Kamae , H. Katagiri , J. Kataoka , J. Knoedlseder , M. Kramer , M. Kuss , J. Lande , S. -H. Lee , F. Longo , F. Loparco , M. N. Lovellette , P. Lubrano , A. G. Lyne , A. Makeev , M. Marelli , M. N. Mazziotta , J. E. McEnery , J. Mehault , P. F. Michelson , T. Mizuno , C. Monte , M. E. Monzani , A. Morselli , I. V. Moskalenko , S. Murgia , M. Naumann-Godo , P. L. Nolan , E. Nuss , T. Ohsugi , A. Okumura , N. Omodei , E. Orlando , J. F. Ormes , J. H. Panetta , D. Parent , V. Pelassa , M. Pepe , M. Persic , M. Pesce-Rollins , F. Piron , T. A. Porter , S. Rain , P. S. Ray , M. Razzano , A. Reimer , O. Reimer , T. Reposeur , R. W. Romani , H. F. -W. Sadrozinski , A. Sander , P. M. Saz Parkinson , C. Sgro , E. J. Siskind , D. A. Smith , P. D. Smith , G. Spandre , P. Spinelli , B. W. Stappers , M. S. Strickman , D. J. Suson , H. Takahashi , T. Tanaka , G. Theureau , D. J. Thompson , S. E. Thorsett , O. Tibolla , D. F. Torres , A. Tramacere , T. L. Usher , J. Vandenbroucke , G. Vianello , N. Vilchez , M. Villata , V. Vitale , A. von Kienlin , A. P. Waite , P. Wang , K. Watters , P. Weltevrede , B. L. Winer , K. S. Wood , M. Ziegler

Radio timing observations of millisecond pulsars (MSPs) in support of Fermi LAT observations of the gamma-ray sky enhance the sensitivity of high-energy pulsation searches. With contemporaneous ephemerides we have detected gamma-ray…

High Energy Astrophysical Phenomena · Physics 2019-08-15 Lucas Guillemot , Ismaël Cognard , Tyrel J. Johnson , Christo Venter , Alice K. Harding