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Related papers: The radio pulsar population of the Small Magellani…

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We present a source catalog from the first deep hard X-ray ($E>10$ keV) survey of the Small Magellanic Cloud (SMC), the NuSTAR Legacy Survey of the SMC. We observed three fields, for a total exposure time of 1 Ms, along the bar of this…

Regular monitoring of the SMC with RXTE has revealed a huge number of X-ray pulsars. Together with discoveries from other satellites at least 45 SMC pulsars are now known. One of these sources, a pulsar with a period of approximately 7.8…

Astrophysics · Physics 2009-11-10 R. H. D. Corbet , S. Laycock , M. J. Coe , F. E. Marshall , C. B. Markwardt

We report new radio timing solutions from a three-year observing campaign conducted with the MeerKAT and Murriyang telescopes for nine Small Magellanic Cloud pulsars, increasing the number of characterised rotation-powered extragalactic…

We report the discovery of 12 new radio pulsars in the Large Magellanic Cloud (LMC) as part of the TRAPUM (TRAnsients and PUlsars with MeerKAT) Large Survey Project, using the MeerKAT L-band receivers (856--1712\,MHz). These pulsars,…

Among the current sample of over 2000 radio pulsars known primarily in the disk of our Galaxy, millisecond pulsars now number almost 200. Due to the phenomenal success of blind surveys of the Galactic field, and targeted searches of Fermi…

Astrophysics of Galaxies · Physics 2015-06-11 Duncan R. Lorimer

We have reprocessed the data archived from the Parkes 70-cm pulsar (PKS70) survey with an expanded DM search range and an acceleration search. Our goal was to detect pulsars that might have been missed in the original survey processing. Of…

High Energy Astrophysical Phenomena · Physics 2025-07-30 Wenke Xia , Fronefield Crawford , Shinnosuke Hisano , Tai Jespersen , Melanie Ficarra , Mckenzie Golden , Mia Gironda

We present results of our pulsar population synthesis of normal pulsars from the Galactic disk using our previously developed Monte-Carlo code. From our studies of observed radio pulsars that have clearly identifiable core and cone…

High Energy Astrophysical Phenomena · Physics 2016-09-08 Peter L. Gonthier , Erin Nagelkirk , Melanie Stam , Alice K. Harding

The luminosity distribution of Galactic radio pulsars is believed to be log-normal in form. Applying this functional form to populations of pulsars in globular clusters, we employ Bayesian methods to explore constraints on the mean and…

Solar and Stellar Astrophysics · Physics 2015-06-11 Jayanth Chennamangalam , D. R. Lorimer , Ilya Mandel , Manjari Bagchi

We revisit the population of normal pulsars in the Galactic field in an `evolutionary' approach. By comparing the distributions of various parameters of synthetic pulsars detectable by the Parkes Multibeam Pulsar Survey, the Pulsar Arecibo…

High Energy Astrophysical Phenomena · Physics 2020-12-25 Anirban Chakraborty , Manjari Bagchi

Binaries comprised of a neutron star (NS) and a black hole (BH) have so far eluded observations as pulsars and with gravitational waves (GWs). We model the formation and evolution of these NS+BH binaries - including pulsar evolution - using…

High Energy Astrophysical Phenomena · Physics 2021-04-21 Debatri Chattopadhyay , Simon Stevenson , Jarrod R. Hurley , Matthew Bailes , Floor Broekgaarden

Over a hundred millisecond radio pulsars (MSPs) have been observed in globular clusters (GCs), motivating theoretical studies of the formation and evolution of these sources through stellar evolution coupled to stellar dynamics. Here we…

High Energy Astrophysical Phenomena · Physics 2019-06-12 Claire S. Ye , Kyle Kremer , Sourav Chatterjee , Carl L. Rodriguez , Frederic A. Rasio

We present ten new radio continuum (RC) detections at catalogued planetary nebula (PN) positions in the Small Magellanic Cloud (SMC): SMPS6, LIN 41, LIN 142, SMP S13, SMP S14, SMP S16, J18, SMP S18, SMP S19 and SMP S22. Additionally, six…

We report the timing analysis results of X-ray pulsars from a recent deep Chandra survey of the Small Magellanic Cloud (SMC). We have analyzed a total exposure of 1.4 Ms from 31 observations over a 1.2 deg$^2$ region in the SMC under a…

High Energy Astrophysical Phenomena · Physics 2017-10-04 JaeSub Hong , Vallia Antoniou , Andreas Zezas , Frank Haberl , Manami Sasaki , Jeremy Drake , Paul Plucinsky , Silas Laycock

Studies of the Galactic population of radio pulsars have shown that their luminosity distribution appears to be log-normal in form. We investigate some of the consequences that occur when one applies this functional form to populations of…

Solar and Stellar Astrophysics · Physics 2013-04-08 Jayanth Chennamangalam , D. R. Lorimer , Ilya Mandel , Manjari Bagchi

The detection of radio pulsars within the central few parsecs of the Galaxy would provide a unique probe of the gravitational and magneto-ionic environments in the Galactic Center (GC) and, if close enough to Sgr A*, precise tests of…

High Energy Astrophysical Phenomena · Physics 2012-07-12 R. S. Wharton , S. Chatterjee , J. M. Cordes , J. S. Deneva , T. J. W. Lazio

We present preliminary results from spectral observations of four candidate radio sources co-identified with known planetary nebulae (PNe) in the Small Magellanic Cloud (SMC). These were made using the Radcliffe 1.9-meter telescope in…

The computation of theoretical pulsar populations has been a major component of pulsar studies since the 1970s. However, the majority of pulsar population synthesis has only regarded isolated pulsar evolution. Those that have examined…

Astrophysics · Physics 2009-11-13 Paul Kiel , Jarrod Hurley , Matthew Bailes , James Murray

We have used millisecond pulsars (MSPs) from the southern High Time Resolution Universe (HTRU) intermediate latitude survey area to simulate the distribution and total population of MSPs in the Galaxy. Our model makes use of the scale…

Context. The majority of massive stars are born with a close binary companion. How this affects their evolution and fate is still largely uncertain, especially at low metallicity. Aims. We derive synthetic populations of massive…

The goal of this article is to summarize the current state of play in the field of radio pulsar statistics. Simply put, from the observed sample of objects from a variety of surveys with different telescopes, we wish to infer the properties…

Astrophysics of Galaxies · Physics 2015-05-19 D. R. Lorimer