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In a search of the unidentified Fermi gamma-ray source 3FGL J1417.5-4402 with the Parkes radio telescope, we discovered PSR J1417-4402, a 2.66 ms pulsar having the same 5.4 day orbital period as the optical and X-ray binary identified by…

Solar and Stellar Astrophysics · Physics 2016-03-23 F. Camilo , J. E. Reynolds , S. M. Ransom , J. P. Halpern , S. Bogdanov , M. Kerr , P. S. Ray , J. M. Cordes , J. Sarkissian , E. D. Barr , E. C. Ferrara

We report 21-yr timing of one of the most precise pulsars: PSR J1713+0747. Its pulse times of arrival are well modeled by a comprehensive pulsar binary model including its three-dimensional orbit and a noise model that incorporates…

PSR J1744-3922 is a binary pulsar exhibiting highly variable pulsed radio emission. We report on a statistical multi-frequency study of the pulsed radio flux variability which suggests that this phenomenon is extrinsic to the pulsar and…

We present timing observations of four millisecond pulsars discovered in the Parkes 20-cm multibeam pulsar survey of the Galactic plane. PSRs J1552-4937 and J1843-1448 are isolated objects with spin periods of 6.28 and 5.47 ms respectively.…

We report the discovery of PSR J1906+0746, a young 144-ms pulsar in a highly relativistic 3.98-hr orbit with an eccentricity of 0.085 and expected gravitational wave coalescence time of 300 Myr. The new pulsar was found during precursor…

We have carried out a sensitive radio pulsar survey along the northern Galactic plane ($50^{\circ} < l < 60^{\circ}$ and $|b| \lapp 2^{\circ}$) using the Parkes 20-cm multibeam system. We observed each position for 70-min on two separate…

Solar and Stellar Astrophysics · Physics 2015-06-16 D. R. Lorimer , F. Camilo , M. A. McLaughlin

We have carried out high-precision timing observations of the eclipsing binary PSR J2051-0827 in the 3.3 years since its discovery. These data indicate that the orbital period is decreasing at a rate of dPb/dt = (-11+-1)X10^-12. If secular,…

Astrophysics · Physics 2009-10-30 B. W. Stappers , M. Bailes , R. N. Manchester , J. S. Sandhu , M. Toscano

We present a timing and scintillation study of the young Galactic halo pulsar PSR J1740+1000 using observations from the Nanshan, FAST, and Parkes radio telescopes. From timing analysis, we measure the pulsar's proper motion for the first…

Astrophysics of Galaxies · Physics 2026-03-02 J. M. Yao , F. F. Kou , J. P. Yuan , Y. Wei , William A. Coles , Richard N. Manchester , N. Wang , S. Q. Wang , W. M. Yan

We have used the Green Bank Telescope to observe the millisecond pulsar PSR J0514-4002A on 43 occasions spread over 2 years. This 5-ms pulsar is located in the globular cluster NGC 1851; it belongs to a binary system and has a highly…

Astrophysics · Physics 2011-02-11 Paulo C. Freire , Scott M. Ransom , Yashwant Gupta

Binary pulsar systems are superb probes of stellar and binary evolution and the physics of extreme environments. In a survey with the Arecibo telescope, we have found PSR J1903+0327, a radio pulsar with a rotational period of 2.15 ms in a…

PSR J1528-3146 is a 60.8 ms pulsar orbiting a heavy white dwarf (WD) companion, with an orbital period of 3.18 d. This work aimed at characterizing the pulsar's astrometric, spin and orbital parameters by analyzing timing measurements…

High Energy Astrophysical Phenomena · Physics 2023-06-07 A. Berthereau , L. Guillemot , P. C. C. Freire , M. Kramer , V. Venkatraman Krishnan , I. Cognard , G. Theureau , M. Bailes , M. C. i Bernadich , M. E. Lower

We have timed four millisecond pulses, PSRs J1721-2457, J1745-0952, J1810-2005, and J1918-0642, for up to a total of 10.5 years each using multiple telescopes in the European Pulsar Timing Array network: the Westerbork Synthesis Radio…

High Energy Astrophysical Phenomena · Physics 2015-05-18 G. H. Janssen , B. W. Stappers , C. G. Bassa , I. Cognard , M. Kramer , G. Theureau

(abridged) PSR J1903+0327, a millisecond pulsar in an eccentric (e = 0.44) 95-day orbit with a (~ 1Msun) companion poses a challenge to our understanding of stellar evolution in binary and multiple-star systems. Here we describe optical and…

We report the discovery and characterization of PSR J1810-0623, a fully recycled millisecond pulsar with a spin period of 4.55 ms, discovered with the Five-hundred-meter Aperture Spherical radio Telescope (FAST) and followed up with FAST…

High Energy Astrophysical Phenomena · Physics 2026-03-17 Jie Zhang , Zerui Wang , Lei Zhang , Yulan Liu , Alessandro Ridolfi , Meng Guo , Di Li , Ryan S. Lynch , Cong Wang , Pei Wang , Mengmeng Ni , Jiale Hu , Mengquan Liu , Zhie Liu , Bo Han , Chenchen Miao

PSR J1802-2124 is a 12.6-ms pulsar in a 16.8-hour binary orbit with a relatively massive white dwarf (WD) companion. These properties make it a member of the intermediate-mass class of binary pulsar (IMBP) systems. We have been timing this…

We report on the discovery of PSR J1141-6545, a radio pulsar in an eccentric, relativistic 5-hr binary orbit. The pulsar shows no evidence for being recycled, having pulse period P = 394 ms, characteristic age tau_c = 1.4 x 10^6 yr, and…

We present the discovery of PSR J1728-4608, a new redback spider pulsar identified in images from the Australian SKA Pathfinder telescope. PSR J1728-4608 is a millisecond pulsar with a spin period of 2.86 ms, in a 5.05 hr orbit with a…

High Energy Astrophysical Phenomena · Physics 2025-12-11 F. Petrou , Y. Wang , N. Hurley-Walker , S. McSweeney , L. Zhang , R. G. Key , J. Freeburn , B. W. Meyers , David L. Kaplan , A. Zic , Tara Murphy , D. Dobie , Y. Maan

We present five recycled pulsars discovered during a 21-cm survey of approximately 4,150 deg^2 between 15 deg and 30 deg from the galactic plane using the Parkes radio telescope. One new pulsar, PSR J1528-3146, has a 61 ms spin period and a…

Astrophysics · Physics 2008-11-26 B. A. Jacoby , M. Bailes , S. M. Ord , H. S. Knight , A. W. Hotan

PSR J0514$-$4002A is a binary millisecond pulsar located in the globular cluster NGC 1851. The pulsar has a spin period of 4.99 ms, an orbital period of 18.8 days, and is in a very eccentric ($e = 0.89$) orbit around a massive companion. In…

We present timing solutions for ten pulsars discovered in 350 MHz searches with the Green Bank Telescope. Nine of these were discovered in the Green Bank Northern Celestial Cap survey and one was discovered by students in the Pulsar Search…