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This paper details on the discovery of 21 pulsars using the Giant Metrewave Radio Telescope (GMRT) from targeted (Fermi directed search) and blind surveys (GMRT High Resolution Southern Sky - GHRSS) and results from the follow up studies.…

High Energy Astrophysical Phenomena · Physics 2018-08-22 Bhaswati Bhattacharyya

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 on the optical identification of the companion star to the eclipsing millisecond pulsar PSR J1824-2452H in the galactic globular cluster M28 (NGC 6626). This star is at only 0.2" from the nominal position of the pulsar and it…

Solar and Stellar Astrophysics · Physics 2015-05-20 C. Pallanca , E. Dalessandro , F. R. Ferraro , B. Lanzoni , R. T. Rood , A. Possenti , N. D'Amico , P. C. Freire , I. Stairs , S. M. Ransom , S. Begin

In this short introductory commentary on the paper (Hessels et al 2006, Science, 311, 1901) reporting the discovery of the shortest spin period millisecond pulsar (MSP) Ter5-ad in the globular cluster Terzan 5, I also point out a new…

Astrophysics · Physics 2009-11-11 Jonathan E. Grindlay

PSR J0514-4002A is a 5-ms pulsar is located in the globular cluster NGC 1851; it belongs to a highly eccentric (e = 0.888) binary system. It is one of the earliest known examples of a numerous and fast-growing class of eccentric binary MSPs…

Astrophysics · Physics 2008-11-26 Paulo C. C. Freire , Scott M. Ransom , Yashwant Gupta

We present the deepest and highest-resolution radio continuum imaging of the Galactic globular cluster Terzan 5, one of the most crowded locations in the radio sky. In these new 2$-$4 GHz Karl G. Jansky Very Large Array images, we detect 38…

High Energy Astrophysical Phenomena · Physics 2026-02-12 Ryan Urquhart , Jay Strader , Laura Chomiuk , Scott M. Ransom , Craig O. Heinke , Arash Bahramian , Thomas J. Maccarone

The Parkes multibeam pulsar survey is a high-frequency, fast-sampled survey of the Galactic Plane, expected to discover at least 500 new pulsars. To date, over 200 pulsars have been found, including several young pulsars and at least one…

We report on the discovery of three new pulsars in the first blind survey of the north Galactic plane (45 < l < 135 ; |b| < 1) with the Giant Meterwave Radio telescope (GMRT) at an intermediate frequency of 610 MHz. The timing parameters,…

We report the first rotation powered pulsars discovered in the Small Magellanic Cloud (SMC) in more than a decade. PSR J0043-73 and PSR J0052-72 were discovered during a Parkes Multi-Beam (PMB) survey of MCSNR J0127-7332, and five new,…

High Energy Astrophysical Phenomena · Physics 2019-06-12 N. Titus , B. W. Stappers , V. Morello , M. Caleb , M. D. Filipovic , V. A. McBride , W. C. G. Ho , D. A. H. Buckley

We report the discovery of the millisecond pulsar PSR J2043+1711 in a search of a Fermi Large Area Telescope (LAT) source with no known associations, with the Nancay Radio Telescope. The new pulsar, confirmed with the Green Bank Telescope,…

Spider pulsars are systems in which a millisecond pulsar (MSP) tightly orbits (Pb $\lesssim$ 1 day) a low mass (mc $\lesssim$ 0.5 M$_\odot$) semi-degenerate star. Spider often display eclipses around superior conjunction. This eclipse…

High Energy Astrophysical Phenomena · Physics 2025-06-18 Clara Blanchard , Lucas Guillemot , Guillaume Voisin , Ismaël Cognard , Gilles Theureau

Over the past decade the discovery of three unique stellar populations and a large number of confirmed pulsars within the globular cluster Terzan 5 has raised questions over its classification. Using the long-term radio pulsar timing of 36…

Solar and Stellar Astrophysics · Physics 2017-08-30 Brian Prager , Scott Ransom , Paulo Freire , Jason Hessels , Ingrid Stairs , Phil Arras , Mario Cadelano

We present the discovery of six millisecond pulsars (MSPs) in the High Time Resolution Universe (HTRU) survey for pulsars and fast transients carried out with the Parkes radio telescope. All six are in binary systems with approximately…

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 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…

The study of binary millisecond pulsars (MSPs) in globular clusters (GCs) is a key ingredient to study binary and stellar evolution under extreme conditions. In this context, an accurate analysis of the optical emission, which is mostly…

High Energy Astrophysical Phenomena · Physics 2026-01-14 Greta Ettorre , Emanuele Dalessandro , Mario Cadelano , Cristina Pallanca , Paulo C. C. Freire , Alessandro Ridolfi

We have completed a 350 MHz drift scan survey using the Robert C. Byrd Green Bank Telescope with the goal of finding new radio pulsars, especially millisecond pulsars that can be timed to high precision. This survey covered ~10300 square…

We have conducted a new search for radio pulsars in compact binary systems in the Parkes multi-beam pulsar survey (PMPS) data, employing novel methods to remove the Doppler modulation from binary motion. This has yielded unparalleled…

For the past couple of decades, the Parkes radio telescope has been regularly observing the millisecond pulsars in 47 Tucanae (47 Tuc). This long-term timing program was designed to address a wide range of scientific issues related to these…

High Energy Astrophysical Phenomena · Physics 2016-08-31 A. Ridolfi , P. Freire , P. Torne , C. O. Heinke , M. van den Berg , C. Jordan , M. Kramer , C. G. Bassa , J. Sarkissian , N. D'Amico , D. Lorimer , F. Camilo , R. N. Manchester , A. Lyne

We model the present day, observable, normal radio pulsar population of the Small Magellanic Cloud (SMC). The pulsars are generated with SeBa, a binary population synthesis code that evolves binaries and the constituent stellar objects up…

Solar and Stellar Astrophysics · Physics 2020-03-18 N. Titus , S. Toonen , V. A. McBride , B. W. Stappers , D. A. H. Buckley , L. Levin
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