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We report the discovery of the first millisecond pulsar with a pulsating white dwarf companion. Following the recent discoveries of pulsations in extremely low-mass (ELM, <0.3 Msol) white dwarfs (WDs), we targeted ELM WD companions to two…

Solar and Stellar Astrophysics · Physics 2015-06-23 Mukremin Kilic , J. J. Hermes , A. Gianninas , Warren R. Brown

The recent discovery of a population of eccentric (e ~ 0.1) millisecond pulsar (MSP) binaries with low-mass white dwarf companions in the Galactic field represents a challenge to evolutionary models that explain MSP formation as recycling:…

High Energy Astrophysical Phenomena · Physics 2016-12-21 E. D. Barr , P. C. C. Freire , M. Kramer , D. J. Champion , M. Berezina , C. G. Bassa , A. G. Lyne , B. W. Stappers

In this work, we report the discovery and characterization of PSR J1411+2551, a new binary pulsar discovered in the Arecibo 327 MHz Drift Pulsar Survey. Our timing observations of the radio pulsar in the system span a period of about 2.5…

High Energy Astrophysical Phenomena · Physics 2018-04-03 J. G. Martinez , K. Stovall , P. C. C. Freire , J. S. Deneva , T. M. Tauris , A. Ridolfi , N. Wex , F. A. Jenet , M. A. McLaughlin , M. Bagchi

Millisecond pulsars (MSPs) are known as highly stable celestial clocks. Nevertheless, recent studies have revealed the unstable nature of their integrated pulse profiles, which may limit the achievable pulsar timing precision. In this…

High Energy Astrophysical Phenomena · Physics 2015-06-24 K. Liu , R. Karuppusamy , K. J. Lee , B. W. Stappers , M. Kramer , R. Smits , M. B. Purver , G. H. Janssen , D. Perrodin

We report the discovery of 3 pulsars, PSR J0030+0451, PSR J0711+09, and PSR J1313+09 that were found in a three dimensional (DM, period, position) search at 430 MHz using the 305m Arecibo telescope. PSR J0030+0451 is a nearby…

Astrophysics · Physics 2007-05-23 A. Somer

We report the discovery and timing of two pulsars from a sample of four circularly polarized sources identified in radio continuum images taken as part of the Australian SKA Pathfinder (ASKAP) Variables and Slow Transients (VAST) survey.…

High Energy Astrophysical Phenomena · Physics 2026-03-17 Rahul Sengar , David L. Kaplan , Emil Lenc , Akash Anumarlapudi , Natasha Hurley-Walker , Ziteng Wang , Laura Driessen , Dougal Dobie , Tara Murphy

Pulsar timing observations have revealed companions to neutron stars that include other neutron stars, white dwarfs, main-sequence stars, and planets. We demonstrate that the correlated and apparently stochastic residual times of arrival…

Binary radio pulsars are superb tools for mapping binary orbits, because of the precision of the pulse timing method (Taylor and Weisberg 1989). To date, all orbital parameters for binary pulsars have been derived from observations of the…

Astrophysics · Physics 2009-10-28 J. F. Bell , M. S. Bessell , B. W. Stappers , M. Bailes , V. M. Kaspi

Results of timing measurements of the pulsar PSR B0329+54 obtained in 1968--2012 using the Big Scanning Antenna of the Pushchino Radio Astronomy Observatory (at 102 and 111 MHz), the DSS 13 and DSS 14 telescopes of the Jet Propulsion…

Instrumentation and Methods for Astrophysics · Physics 2017-12-06 E. D. Starovoit , A. E. Rodin

We report on nine years of timing observations of PSR J2019+2425, a millisecond pulsar in a wide 76.5 day orbit with a white dwarf. We measure a significant change over time of the projected semi-major axis of the orbit,…

Astrophysics · Physics 2009-10-31 David J. Nice , Eric M. Splaver , Ingrid H. Stairs

We present the results of a 430-MHz survey for pulsars conducted during the upgrade to the 305-m Arecibo radio telescope. Our survey covered a total of 1147 square degrees of sky using a drift-scan technique. We detected 33 pulsars, 10 of…

We have analyzed 5.5 years of timing observations of 7 'slowly' rotating radio pulsars, made with the Westerbork Synthesis Radio Telescope. We present improved timing solutions and 30, mostly small, new glitches. Particularly interesting…

Astrophysics · Physics 2009-11-11 G. H. Janssen , B. W. Stappers

We report on optical observations of the low-mass binary millisecond pulsar systems J0034-0534 and J2145-0750. A faint (I=23.5) object was found to be coincident with the timing position of PSR J2145-0750. While a galaxy or distant…

Astrophysics · Physics 2009-10-28 J. F. Bell , S. R. Kulkarni , M. Bailes , E. M. Leitch , A. G. Lyne

We present radio observation of a millisecond pulsar PSR J0621+1002 using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The pulsar shows periodic pulse intensity modulations for both the first and the third pulse…

High Energy Astrophysical Phenomena · Physics 2021-06-02 S. Q. Wang , J. B. Wang , N. Wang , Y. Feng , S. B. Zhang , K. J. Lee , D. Li , J. G. Lu , J. T. Xie , D. J. Zhou , L. Zhang

We review the main properties, demographics and applications of binary and millisecond radio pulsars. Our knowledge of these exciting objects has greatly increased in recent years, mainly due to successful surveys which have brought the…

Astrophysics · Physics 2015-05-13 D. R. Lorimer

In a search with the Parkes radio telescope of 56 unidentified Fermi-LAT gamma-ray sources, we have detected 11 millisecond pulsars (MSPs), 10 of them discoveries, of which five were reported in Kerr et al. (2012). We did not detect radio…

Millisecond and binary pulsars are the most stable natural frequency standards which admits to introduce modified versions of universal and ephemeris time scales based correspondingly on the intrinsic rotation of pulsar and on its orbital…

Data Analysis, Statistics and Probability · Physics 2007-05-23 Sergei M. Kopeikin , Vladimir A. Potapov

We report on the high-precision timing of 42 radio millisecond pulsars (MSPs) observed by the European Pulsar Timing Array (EPTA). This EPTA Data Release 1.0 extends up to mid-2014 and baselines range from 7-18 years. It forms the basis for…

We are undertaking a high-frequency survey of the Galactic plane for radio pulsars, using the 13-element multibeam receiver on the 64-m Parkes radio telescope. We describe briefly the survey system and some of the initial results. PSR…

We present the Robert C. Byrd Green Bank Telescope discovery of the highly eccentric binary millisecond pulsar PSR J1835$-$3259A in the Fermi Large Area Telescope-detected globular cluster NGC 6652. Timing over one orbit yields the pulse…

High Energy Astrophysical Phenomena · Physics 2015-07-15 Megan E. DeCesar , Scott M. Ransom , David L. Kaplan , Paul S. Ray , Aaron M. Geller