English
Related papers

Related papers: PSR J1022+1001: Profile Stability & Precision Timi…

200 papers

We have investigated the radio emission from the anomalous X-ray pulsar 1E 1547.0-5408 (PSR J1550-5418) using the Parkes telescope and the Australia Telescope Compact Array. The flux density of the pulsar is roughly the same between 1.4 and…

Astrophysics · Physics 2009-11-13 F. Camilo , J. Reynolds , S. Johnston , J. P. Halpern , S. M. Ransom

We report a detailed study of subpulse drifting in four long period pulsars. These pulsars were observed in the Meterwavelength Single-pulse Polarimetric Emission Survey and the presence of phase modulated subpulse drifting was reported in…

High Energy Astrophysical Phenomena · Physics 2018-03-14 Rahul Basu , Dipanjan Mitra

We present the spin frequency and profile evolution of the radio pulsar J1119$-$6127 following magnetar-like X-ray bursts from the system in 2016 July. Using data from the Parkes radio telescope, we observe a smooth and fast spin-down…

High Energy Astrophysical Phenomena · Physics 2018-08-08 S. Dai , S. Johnston , P. Weltevrede , M. Kerr , M. Burgay , P. Esposito , G. Israel , A. Possenti , N. Rea , J. Sarkissian

PSR J0636+5128 is a millisecond pulsar in one of the most compact pulsar binaries known, with a 96\,min orbital period. The pulsar mass function suggests a very low-mass companion, similar to that seen in so-called "black widow" binaries.…

High Energy Astrophysical Phenomena · Physics 2018-09-05 D. L. Kaplan , K. Stovall , M. H. van Kerkwijk , C. Fremling , A. G. Istrate

Using LOFAR, we have performed a very-low-frequency (115-155 MHz) radio survey for millisecond pulsars (MSPs). The survey targeted 52 unidentified Fermi $\gamma$-ray sources. Employing a combination of coherent and incoherent dedispersion,…

The emerging population of long-period radio transients (LPTs) show both similarities and differences with normal pulsars. A key difference is that their radio emission is too bright to be powered solely by rotational energy. Various models…

We report the discovery of PSR~J2251$-$3711, a radio pulsar with a spin period of 12.1 seconds, the second longest currently known. Its timing parameters imply a characteristic age of 15 Myr, a surface magnetic field of $1.3 \times…

By analysing the data acquired from the Parkes 64-m radio telescope at 1369 MHz, we report on the phase-stationary non-drift amplitude modulation observed in PSR J1048-5832. The high-sensitivity observations revealed that the central and…

High Energy Astrophysical Phenomena · Physics 2020-01-08 W. M. Yan , R. N. Manchester , N. Wang , Z. G. Wen , J. P. Yuan , K. J. Lee , J. L. Chen

The phenomenon of pulsar nulling, where pulsars temporarily and stochastically cease their radio emission, is thought to be indicative of a `dying' pulsar, where radio emission ceases entirely. Here we report the discovery of a long-period…

High Energy Astrophysical Phenomena · Physics 2024-05-30 G. Grover , N. D. R. Bhat , S. McSweeney , C. P. Lee , B. W. Meyers , C. M. Tan , S. S. Kudale

PSR J1905+0154A is a binary millisecond pulsar located in the globular cluster (GC) NGC 6749. It was discovered in 2004 in a search for pulsars in GCs carried out with the Arecibo 305-m radio telescope. The pulsar has a spin period of 3.2…

One of the major challenges for pulsar timing array (PTA) experiments is the mitigation of the effects of the turbulent interstellar medium (ISM) from timing data. These can potentially lead to measurable delays and/or distortions in the…

The ROSAT X-ray source 1RXS J141256.0+792204 has recently been identified as a likely compact object whose properties suggest it could be a very nearby radio millisecond pulsar at d = 80 - 260pc. We investigated this hypothesis by searching…

Astrophysics · Physics 2009-11-13 J. W. T. Hessels , B. W. Stappers , R. E. Rutledge , D. B. Fox , A. H. Shevchuk

We present long-term observations of two intermittent pulsars, PSRs~J1832+0029 and J1841$-$0500 using the Parkes 64\,m radio telescope. The radio emission for these pulsars switches "off" for year-long durations. Our new observations have…

High Energy Astrophysical Phenomena · Physics 2020-07-08 S. Q. Wang , J. B. Wang , G. Hobbs , S. B. Zhang , R. M. Shannon , S. Dai , R. Hollow , M. Kerr , V. Ravi , N. Wang , L. Zhang

We describe an ongoing search for pulsars and dispersed pulses of radio emission, such as those from rotating radio transients (RRATs) and fast radio bursts (FRBs), at 350 MHz using the Green Bank Telescope. With the Green Bank Ultimate…

Radio pulsars are often used as clocks in a wide variety of experiments. Imperfections in the clock, known as timing noise, have the potential to reduce the significance of, or even thwart e.g. the attempt to find a stochastic gravitational…

High Energy Astrophysical Phenomena · Physics 2019-06-26 Nakornping Namkham , Phrudth Jaroenjittichai , Simon Johnston

We report the results of timing observations of PSR J1952+2630, a 20.7 ms pulsar in orbit with a massive white dwarf companion. With the increased timing baseline, we obtain improved estimates for astrometric, spin, and binary parameters…

High Energy Astrophysical Phenomena · Physics 2022-12-28 T. Gautam , P. C. C. Freire , A. Batrakov , M. Kramer , C. C. Miao , E. Parent , W. W. Zhu

We present 15 years of Nan\c{c}ay and Green Bank radio telescope timing observations for PSR J1231$-$1411. This millisecond pulsar is a primary science target for the Neutron Star Interior Composition Explorer telescope (NICER, which…

High Energy Astrophysical Phenomena · Physics 2026-03-02 H. Thankful Cromartie , Matthew Kerr , Scott M. Ransom , Paul S. Ray , Lucas Guillemot , Ismaël Cognard , Emmanuel Fonseca , Gilles Theureau

We present the results of the multi-frequency scatter time measurements for ten radio pulsars that were relatively less studied in this regard. The observations were performed using the Giant Meterwave Radio Telescope at the observing…

High Energy Astrophysical Phenomena · Physics 2015-10-21 Wojciech Lewandowski , Karolina Rozko , Jaroslaw Kijak , Bhaswati Bhattacharyya , Jayanta Roy

We study statistical properties of stochastic variations in pulse arrival times, timing noise, in radio pulsars using a new analysis method applied in the time domain. The method proceeds in two steps. First, we subtract low-frequency…

High Energy Astrophysical Phenomena · Physics 2015-06-11 Steve Price , Bennett Link , Steve Shore , David Nice

We report on a NuSTAR observation of the young, energetic pulsar PSR J1617-5055. Parkes Observatory 3 GHz radio observations of the pulsar (taken about 7 years before the NuSTAR observations) are also reported here. NuSTAR detected…

High Energy Astrophysical Phenomena · Physics 2022-01-05 J. Hare , I. Volkov , G. G. Pavlov , O. Kargaltsev , S. Johnston
‹ Prev 1 8 9 10 Next ›