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With recent advances in the sensitivity of radio surveys of the Galactic disk, the number of millisecond pulsars (MSPs) has increased substantially in recent years such that it is now possible to study their demographic properties in more…

High Energy Astrophysical Phenomena · Physics 2022-03-14 Kshitij Aggarwal , Duncan. R. Lorimer

We have constructed timing solutions for 81 gamma-ray pulsars covering more than five years of Fermi data. The sample includes 37 radio-quiet or radio-faint pulsars which cannot be timed with other telescopes. These timing solutions and the…

High Energy Astrophysical Phenomena · Physics 2015-12-02 Matthew Kerr , Paul Ray , Simon Johnston , Ryan Shannon , Fernando Camilo

The $Fermi$-LAT has revealed that rotation powered millisecond pulsars (MSPs) are a major contributor to the Galactic $\gamma$-ray source population. We discuss the $\gamma$-ray emission process within the context of the outer gap…

High Energy Astrophysical Phenomena · Physics 2011-10-26 J. Takata , Y. Wang , K. S. Cheng

Using the data from the Large Area Telescope on board the Fermi Gamma-ray Space Telescope, we have searched for the gamma-ray pulsations from the direction of globular cluster M28 (NGC 6626). We report the discovery of a signal with the…

High Energy Astrophysical Phenomena · Physics 2015-06-12 J. H. K. Wu , C. Y. Hui , E. M. H. Wu , A. K. H. Kong , R. H. H. Huang , P. H. T. Tam , J. Takata , K. S. Cheng

PSR J0437-4715 is a gamma-ray millisecond pulsar, which has been detected by Fermi-LAT. For understanding the nature, we analyze the GeV gamma-ray data obtained with Fermi-LAT around the pulsar region. Based on the pulsar timing ephemeris,…

High Energy Astrophysical Phenomena · Physics 2026-04-30 Ziwei Ou

The energetic, eclipsing millisecond pulsar J1816+4510 was recently discovered in a low-frequency radio survey with the Green Bank Telescope. With an orbital period of 8.7 hr and minimum companion mass of 0.16 Msun it appears to belong to…

We use data from the MeerTime project on the MeerKAT telescope to ask whether the radio emission properties of millisecond pulsars (MSPs) and slowly rotating, younger pulsars (SPs) are similar or different. We show that the flux density…

High Energy Astrophysical Phenomena · Physics 2024-07-10 A. Karastergiou , S. Johnston , B. Posselt , L. S. Oswald , M. Kramer , P. Weltevrede

We have been conducting the GMRT High Resolution Southern Sky (GHRSS) survey for the last four years and have discovered 18 pulsars to date. The GHRSS survey is an off-Galactic-plane survey at 322 MHz in a region of the sky (declination…

The behaviour of the pulsar spectrum at high radio frequencies can provide decisive information about the nature of the radio emission mechanism. We report recent observations of a selected sample of pulsars at lambda=9mm (32 GHz) with the…

Astrophysics · Physics 2009-11-13 O. Loehmer , A. Jessner , M. Kramer , R. Wielebinksi , O. Maron

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…

High Energy Astrophysical Phenomena · Physics 2012-11-27 H. J. Pletsch , L. Guillemot , H. Fehrmann , B. Allen , M. Kramer , C. Aulbert , M. Ackermann , M. Ajello , A. de Angelis , W. B. Atwood , L. Baldini , J. Ballet , G. Barbiellini , D. Bastieri , K. Bechtol , R. Bellazzini , A. W. Borgland , E. Bottacini , T. J. Brandt , J. Bregeon , M. Brigida , P. Bruel , R. Buehler , S. Buson , G. A. Caliandro , R. A. Cameron , P. A. Caraveo , J. M. Casandjian , C. Cecchi , Ö. Celik , E. Charles , R. C. G. Chaves , C. C. Cheung , J. Chiang , S. Ciprini , R. Claus , J. Cohen-Tanugi , J. Conrad , S. Cutini , F. D'Ammando , C. D. Dermer , S. W. Digel , P. S. Drell , A. Drlica-Wagner , R. Dubois , D. Dumora , C. Favuzzi , E. C. Ferrara , A. Franckowiak , Y. Fukazawa , P. Fusco , F. Gargano , N. Gehrels , S. Germani , N. Giglietto , F. Giordano , M. Giroletti , G. Godfrey , I. A. Grenier , 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. Hill , X. Hou , R. E. Hughes , G. Johannesson , M. S. Jackson , T. Jogler , A. S. Johnson , W. N. Johnson , J. Kataoka , M. Kerr , J. Knödlseder , M. Kuss , J. Lande , S. Larsson , L. Latronico , M. Lemoine-Goumard , F. Longo , F. Loparco , M. N. Lovellette , P. Lubrano , F. Massaro , M. Mayer , M. N. Mazziotta , J. E. McEnery , J. Mehault , P. F. Michelson , W. Mitthumsiri , T. Mizuno , M. E. Monzani , A. Morselli , I. V. Moskalenko , S. Murgia , T. Nakamori , R. Nemmen , E. Nuss , M. Ohno , T. Ohsugi , N. Omodei , M. Orienti , E. Orlando , F. de Palma , D. Paneque , J. S. Perkins , F. Piron , G. Pivato , T. A. Porter , S. Raino , R. Rando , P. S. Ray , M. Razzano , A. Reimer , O. Reimer , T. Reposeur , S. Ritz , R. W. Romani , C. Romoli , D. A. Sanchez , P. M. Saz Parkinson , A. Schulz , C. Sgro , E. do Couto e Silva , E. J. Siskind , D. A. Smith , 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 , G. Vianello , V. Vitale , A. P. Waite , B. L. Winer , K. S. Wood , M. Wood , Z. Yang , S. Zimmer

Globular clusters (GCs) offer a unique environment for discovering and studying millisecond pulsars. In this paper, we present a multi-epoch search and detailed timing analysis of millisecond pulsars in the GC M2, using the…

We report our search for \gamma-ray emission in the energy range from 100 MeV to 300 GeV from four Accreting Millisecond Pulsars (AMPs), SAX J1808.4-3658, IGR J00291+5934, XTE J1814-338, and XTE J0929-314. The data are from four-year…

High Energy Astrophysical Phenomena · Physics 2015-06-12 Yi Xing , Zhongxiang Wang

With LOFAR beginning operation in 2008 there is huge potential for studying pulsars with high signal to noise at low frequencies. We present results of observations made with the Westerbork Synthesis Radio Telescope to revisit, with modern…

Astrophysics · Physics 2009-11-13 B. W. Stappers , R. Karuppusamy , J. W. T. Hessels

We combine new and archival Chandra observations of the globular cluster NGC 6752 to create a deeper X-ray source list, and study the faint radio millisecond pulsars (MSPs) of this cluster. We detect four of the five MSPs in NGC 6752, and…

High Energy Astrophysical Phenomena · Physics 2015-06-19 L. M. Forestell , C. O. Heinke , H. N. Cohn , P. M. Lugger , G. R. Sivakoff , S. Bogdanov , A. M. Cool , J. Anderson

The Large Area Telescope (LAT) on Fermi has detected ~150 gamma-ray pulsars, about a third of which were discovered in blind searches of the $\gamma$-ray data. Because the angular resolution of the LAT is relatively poor and blind searches…

High Energy Astrophysical Phenomena · Physics 2015-06-17 P. M. Saz Parkinson , A. Belfiore , P. Caraveo , A. De Luca , M. Marelli

Reliable neutron star mass measurements are key to determining the equation-of-state of cold nuclear matter, but these are rare. "Black Widows" and "Redbacks" are compact binaries consisting of millisecond pulsars and semi-degenerate…

We analyze 24 binary radio pulsars in the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) nine-year data set. We make fourteen significant measurements of Shapiro delay, including new detections in four pulsar-binary…

With a collecting area of 70 000 m^2, the Five hundred metre Aperture Spherical Telescope (FAST) will allow for great advances in pulsar astronomy. We have performed simulations to estimate the number of previously unknown pulsars FAST will…

Instrumentation and Methods for Astrophysics · Physics 2015-05-13 R. Smits , D. R. Lorimer , M. Kramer , R. Manchester , B. Stappers , C. J. Jin , R. D. Nan , D. Li

Observations of pulsars with the Large Area Telescope (LAT) on the Fermi satellite have revolutionized our view of the gamma-ray pulsar population. For the first time, a large number of young gamma-ray pulsars have been discovered in blind…

High Energy Astrophysical Phenomena · Physics 2019-08-15 L. Guillemot

Millisecond pulsar (MSP) binaries are unique laboratories for studying matter and radiation under extreme conditions that are unattainable on Earth. Recent detections of optical millisecond pulsations from three systems in distinct…

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