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We report on the follow-up observations of circularly polarized sources identified in the MeerKAT image-based survey of the Galactic bulge. Using the Parkes radio telescope, we observed sixteen circularly polarized sources with the UWL…

High Energy Astrophysical Phenomena · Physics 2026-03-17 Rahul Sengar , Akash Anumarlapudi , David L. Kaplan , Dale A. Frail , Scott D. Hyman , Emil Polisensky

We explore the enigmatic population of long-period, apparently non-recycled pulsars in globular clusters, building on recent work by Boyles et al (2011). This population is difficult to explain if it formed through typical core collapse…

High Energy Astrophysical Phenomena · Physics 2012-08-24 Ryan S. Lynch , Duncan R. Lorimer , Scott M. Ransom , Jason Boyles

Spin period distribution provides important clues to understand the formation of millisecond pulsars (MSPs). To uncover the intrinsic period distribution, we analyze three samples of radio MSPs in the Galactic field and in globular…

High Energy Astrophysical Phenomena · Physics 2025-03-31 Xiao-Jin Liu , Zhi-Qiang You , Zu-Cheng Chen , Shen-Shi Du , Ang Li , Xing-Jiang Zhu

The late-type stellar population in the Galactic Center was first predicted to reside in a dynamically relaxed cusp (power law slope ranging from 3/2 to 7/4). However, observations - which rely on models to correct for projection effects -…

Using the Very Large Array, we have measured the proper motions of twenty-eight radio pulsars. On average, the pulsars studied are fainter and more distant than those studied in earlier work, reducing the selection biases inherent in…

Astrophysics · Physics 2009-11-10 W. F. Brisken , A. S. Fruchter , W. M. Goss , R. S. Herrnstein , S. E. Thorsett

A systematic study of 80 known pulsars observed at 185 MHz has been conducted using archival incoherent-sum data from the Murchison Widefield Array (MWA). The dataset comprises 48 drift-scan observations from the MWA Voltage Capture System,…

High Energy Astrophysical Phenomena · Physics 2025-10-13 Ting Yu , Hongyu Gong , Zhifu Gao , Zhongli Zhang , Zhigang Wen , Yujie Wang , Tao An

We have monitored a large sample of millisecond pulsars using the 100-m Effelsberg radio telescope in order to compare their radio emission properties to the slowly rotating population. With some notable exceptions, our findings suggest…

When looking for gravitational wave signals from known pulsars, targets have been treated using independent searches. Here we use a hierarchical Bayesian framework to combine observations from individual sources for two purposes: to produce…

Instrumentation and Methods for Astrophysics · Physics 2018-09-12 M. Pitkin , C. Messenger , X. Fan

The radio polarization properties of the pulsar population are only superficially captured by the conventional picture of pulsar radio emission. We study the broadband polarization of 271 young radio pulsars, focusing particularly on…

High Energy Astrophysical Phenomena · Physics 2023-01-16 L. S. Oswald , S. Johnston , A. Karastergiou , S. Dai , M. Kerr , M. E. Lower , R. N. Manchester , R. M. Shannon , C. Sobey , P. Weltevrede

We have surveyed all 22 known Galactic globular clusters observable with the Arecibo radio telescope and within 70kpc of the Sun for radio pulsations at ~1.4GHz. Data were taken with the Wideband Arecibo Pulsar Processor, which provided the…

Astrophysics · Physics 2009-11-13 J. W. T. Hessels , S. M. Ransom , I. H. Stairs , V. M. Kaspi , P. C. C. Freire

We present the discovery and timing results of four pulsars discovered in a pilot survey at intermediate Galactic latitudes with the Five-hundred Aperture Spherical Telescope (FAST). Among these pulsars, two belong to the category of…

We study, via a Monte Carlo simulation, a population of isolated asymmetric neutron stars where the magnitude of the magnetic field is low enough so that the dynamical evolution is dominated by the emission of gravitational waves. A…

Astrophysics · Physics 2009-11-10 C. Palomba

Last years studies have shown that the spatial regularity in the distribution of young stellar population along the spiral arms and rings of galaxies, previously considered to be rare, is a fairly common phenomenon. Spatial regularity has…

Astrophysics of Galaxies · Physics 2024-12-31 A. S. Gusev , E. V. Shimanovskaya

We report results from the initial stage of a long-term pulsar survey of the Galactic plane using the Arecibo L-band Feed Array (ALFA), a seven-beam receiver operating at 1.4 GHz with 0.3 GHz bandwidth. The search targets Galactic latitudes…

Pulsars provide unique probes for the {\it large-scale} interstellar magnetic field in the Galactic disk. The Parkes multibeam pulsar survey has discovered many distant pulsars which enables us for the first time to explore the magnetic…

Astrophysics · Physics 2007-05-23 J. L. Han , R. N. Manchester , G. J. Qiao , A. G. Lyne

Binary pulsars can be used to probe Galactic potential gradients through calculating their line-of-sight accelerations. We present the first data release of direct line-of-sight acceleration measurements for 29 binary pulsars. We validate…

Astrophysics of Galaxies · Physics 2024-06-12 Abigail Moran , Chiara M. F. Mingarelli , Ken Van Tilburg , Deborah Good

We measure the line-of-sight accelerations of 26 binary pulsars due to the Milky Way's gravitational potential, and produce a 3-dimensional map of the acceleration field of the Galaxy. Acceleration measurements directly give us the change…

Astrophysics of Galaxies · Physics 2024-05-22 Thomas Donlon , Sukanya Chakrabarti , Lawrence M. Widrow , Michael T. Lam , Philip Chang , Alice C. Quillen

[ABRIDGED] The knowledge of the regular component of the Galactic magnetic field gives important information about the structure and dynamics of the Milky Way, as well as constitutes a basic tool to determine cosmic rays trajectories. It…

Astrophysics of Galaxies · Physics 2015-05-19 B. Ruiz-Granados , J. A. Rubino-Martin , E. Battaner

The Planck Surveyor cosmic microwave background (CMB) imaging mission will make very sensitive maps of the whole sky at microwave, millimetre (mm) and sub-mm wavelengths. The steep source counts expected in the highest frequency Planck…

Astrophysics · Physics 2007-05-23 Andrew W. Blain

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