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We present high-sensitivity, wide-band observations (704 to 4032 MHz) of the young to middle-aged radio pulsar J1452-6036, taken at multiple epochs before and, serendipitously, shortly after a glitch occurred on 2019 April 27. We obtained…

High Energy Astrophysical Phenomena · Physics 2021-03-31 F. Jankowski , E. F. Keane , B. W. Stappers

Binaries harbouring millisecond pulsars enable a unique path to determine neutron star masses: radio pulsations reveal the motion of the neutron star, while that of the companion can be characterised through studies in the optical range.…

High Energy Astrophysical Phenomena · Physics 2020-05-06 D. Mata Sánchez , A. G. Istrate , M. H. van Kerkwijk , R. P. Breton , D. L. Kaplan

We report the discovery of giant pulse (GP) emission from the transitional millisecond pulsar (tMSP) PSR J1227$-$4853, using 174 hours of single-pulse data from the upgraded Giant Metrewave Radio Telescope (uGMRT). This marks the first…

High Energy Astrophysical Phenomena · Physics 2026-01-06 Saptarshi Sarkar , Jayanta Roy , Bhaswati Bhattacharyya , Paul Ray , Sanjay Kudale , Paulo Freire , Patrick Weltevrede , Matthew Kerr

PSR J0537-6910 is a young, energetic, rotation-powered X-ray pulsar with a spin period of 16 ms located in the Large Magellanic Cloud. We have searched for previously undetected radio pulsations (both giant and standard) from this pulsar in…

Astrophysics · Physics 2008-11-26 F. Crawford , M. McLaughlin , S. Johnston , R. Romani , E. Sorrelgreen

With unparalleled rotational stability, millisecond pulsars (MSPs) serve as ideal laboratories for numerous astrophysical studies, many of which require precise knowledge of the distance and/or velocity of the MSP. Here, we present the…

Time-scales of radio emission are studied in PSR J0437-4715 at 327 MHz using almost half a million periods of high quality data from Ooty Radio Telescope. The radio emission in this milli second pulsar occurs on a short (s) time-scale of…

Astrophysics · Physics 2009-10-31 M. Vivekanand

We present initial results from the low-latitude Galactic plane region of the High Time Resolution Universe pulsar survey conducted at the Parkes 64-m radio telescope. We discuss the computational challenges arising from the processing of…

We report the phase-connected timing ephemeris, polarization pulse profiles, Faraday rotation measurements, and Rotating-Vector-Model (RVM) fitting results of twelve millisecond pulsars (MSPs) discovered with the Five-hundred-meter Aperture…

We undertake the first targeted search at 1.5 GHz for radio emission from the variable $\gamma$-ray pulsar PSR J2021$+$4026. This radio-quiet pulsar assumes one of two stable $\gamma$-ray emission states, between which it transitions on a…

High Energy Astrophysical Phenomena · Physics 2023-05-24 B. Shaw , B. W. Stappers , P. Weltevrede , C. A. Jordan , M. B. Mickaliger , A. G. Lyne

The discovery of transitional millisecond pulsars (tMSPs) provided conclusive proof that neutron star (NS) low-mass X-ray binaries (LMXBs) comprise part of the evolutionary pathway towards binary millisecond pulsars (MSPs). Redback and…

High Energy Astrophysical Phenomena · Physics 2023-02-15 Amy H. Knight , Adam Ingram , Jakob van den Eijnden , Douglas J. K. Buisson , Lauren Rhodes , Matthew Middleton

Sub-pulse drifting in pulsar radio emission is considered to be one of the most promising phenomenon for uncovering the underlying physical processes. Here we present a detailed study of such a phenomenon in observations of PSR…

High Energy Astrophysical Phenomena · Physics 2021-11-17 Parul Janagal , Manoneeta Chakraborty , N. D. Ramesh Bhat , Bhaswati Bhattacharya , Samuel J. McSweeney

Over a dozen millisecond pulsars are ablating low-mass companions in close binary systems. In the original "black widow", the 8-hour orbital period eclipsing pulsar PSR J1959+2048 (PSR B1957+20), high energy emission originating from the…

Coherent radio emission with properties similar to planetary auroral signals has been reported from GJ 1151, a quiescent, slow-rotating mid-M star, by the LOFAR Two-metre (120-170 MHz) Sky Survey (LoTSS). The observed {LOFAR} emission is…

We report the detection of a glitch in the millisecond pulsar (MSP) PSR J0900$-$3144, which is included in the European, MeerKAT and Parkes pulsar timing array experiments. The dataset combines observations from the MeerKAT, Nan\c{c}ay,…

We have been conducting the GMRT High Resolution Southern Sky (GHRSS) survey for the last four years and have discovered 18 pulsars to date. The GHRSS survey is an off-Galactic-plane survey at 322 MHz in a region of the sky (declination…

We present the results of Green Bank Telescope (GBT) observations of two pulsars discovered with the Five-hundred-meter Aperture Spherical Radio Telescope (FAST) during the 19-beam Commensal Radio Astronomy FasT Survey (CRAFTS). We…

High Energy Astrophysical Phenomena · Physics 2026-04-09 Victoria A. Blackmon , Maura A. McLaughlin , De Zhao , Jianping Yuan , Qingdong Wu , Chen-Chen Miao , Meng-Yao Xue , Di Li , Wei-Wei Zhu

In the past five years, approximately one third of the 65 pulsars discovered by radio observations of Fermi unassociated sources are black widow pulsars (BWPs). BWPs are binary millisecond pulsars with companion masses ranging from 0.01-0.1…

High Energy Astrophysical Phenomena · Physics 2015-10-26 Christopher Bochenek , Scott Ransom , Paul Demorest

We consider the evolution of millisecond radio pulsars in binary systems with a main-sequence or evolved stellar companion. Evolution of non-accreting binary systems with "eclipsing" milisecond pulsars was described by Klu\'zniak, Czerny &…

High Energy Astrophysical Phenomena · Physics 2015-03-20 Filip Ficek , Mieszko Rutkowski , Włodek Kluźniak

We present the discovery of a further five recycled pulsar systems in the mid-Galactic latitude portion of the High Time Resolution Universe (HTRU) Survey. The pulsars have rotational periods ranging from 2 ms to 66 ms, and four are in…

PSR\,J1723$-$2837 is a "redback" millisecond pulsar (MSP) with a low-mass companion in a 14.8\,h orbit. The system's properties closely resemble those of "transitional" MSPs that alternate between spin-down and accretion-powered states. In…

Solar and Stellar Astrophysics · Physics 2016-12-08 André van Staden , John Antoniadis
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