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Related papers: Rotation measure variations in Galactic Centre pul…

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We report the discovery of PSR J1906+0746, a young 144-ms pulsar in a highly relativistic 3.98-hr orbit with an eccentricity of 0.085 and expected gravitational wave coalescence time of 300 Myr. The new pulsar was found during precursor…

We conducted a timing analysis of over 18 years of data on the young ($\tau_{\rm c} = 112$ kyr, $P = 114$\,ms) relativistic binary PSR~J1906+0746, using six radio telescopes: Arecibo, FAST, Green Bank, Lovell, MeerKAT, and Nan\c{c}ay. This…

PSR J1641+8049 is a 2 ms black widow pulsar with the 2.2 h orbital period detected in the radio and $\gamma$-rays. We performed new phase-resolved multi-band photometry of PSR J1641+8049 using the OSIRIS instrument at the Gran Telescopio…

We report the discovery of PSR J1847-0130, a radio pulsar with a 6.7-s spin period, in the Parkes multibeam survey of the Galactic plane. The slowdown rate for the pulsar, 1.3x10^{-12} s/s, is high and implies a surface dipole magnetic…

In this paper we report on $\sim10$ years of observations of PSR J2051$-$0827, at radio frequencies in the range 110--4032 MHz. We investigate the eclipse phenomena of this black widow pulsar using model fits of increased dispersion and…

High Energy Astrophysical Phenomena · Physics 2019-09-16 E. J. Polzin , R. P. Breton , B. W. Stappers , B. Bhattacharyya , G. H. Janssen , S. Osłowski , M. S. E. Roberts , C. Sobey

We present a polarization analysis of PSR J0941$-$39 and PSR J1107$-$5907, which exhibit transitions between being pulsars and rotating radio transients (RRATs), using the ultra-wide bandwidth low-frequency (UWL) receiver on Murriyang, the…

High Energy Astrophysical Phenomena · Physics 2023-11-10 S. N. Sun , N. Wang , W. M. Yan , S. Q. Wang , J. T. Xie

We present the measurements of Faraday rotation for 477 pulsars observed by the Parkes 64-m radio telescope and the Green Bank 100-m radio telescope. Using these results along with previous measurements for pulsars and extra-galactic…

Astrophysics of Galaxies · Physics 2018-01-31 J. L. Han , R. N. Manchester , W. van Straten , P. Demorest

CS 1246 is a hot subdwarf B star discovered in 2009 to exhibit a single, large-amplitude radial pulsation. An O-C diagram constructed from this mode revealed reflex motion due to the presence of a low-mass M dwarf, as well as a long-term…

We report the discovery of PSR J1757$-$1854, a 21.5-ms pulsar in a highly-eccentric, 4.4-h orbit around a neutron star (NS) companion. PSR J1757$-$1854 exhibits some of the most extreme relativistic parameters of any known pulsar, including…

We utilized the Very Large Array to make multifrequency polarization measurements of 20 radio sources viewed through the IC 1805 HII region and "Superbubble", as well as in the immediate vicinity. The measurements at frequencies between…

Astrophysics of Galaxies · Physics 2018-09-24 Allison H. Costa , Steven R. Spangler

We report on 12 years of observations of PSR J1713+0747, a pulsar in a 68-day orbit with a white dwarf. Pulse times of arrival were measured with uncertainties as small as 200 ns. The timing data yielded measurements of the relativistic…

We have conducted radio timing observations of the eclipsing millisecond binary pulsar J2051-0827 with the European Pulsar Timing Array network of telescopes and the Parkes radio telescope, spanning over 13 years. The increased data span…

The goal of this work is to investigate the Faraday rotation measure (RM) of radio galaxies in hot galaxy clusters in order to establish a possible connection between the magnetic field strength and the gas temperature of the intracluster…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 F. Govoni , K. Dolag , M. Murgia , L. Feretti , S. Schindler , G. Giovannini , W. Boschin , V. Vacca , A. Bonafede

We present optical observations of the redback millisecond pulsar PSR J1048+2339, which is a 4.66 ms radio pulsar in a compact binary with an orbital period of six hours. We obtained high-quality light curves of PSR J1048+2339 with the…

High Energy Astrophysical Phenomena · Physics 2019-01-16 Yee Xuan Yap , K. L. Li , A. K. H. Kong , J. Takata , J. Lee , C. Y. Hui

Timing analysis of PSR J1705$-$1906 using data from Nanshan 25-m and Parkes 64-m radio telescopes, which span over fourteen years, shows that the pulsar exhibits significant proper motion, and rotation instability. We updated the astrometry…

High Energy Astrophysical Phenomena · Physics 2018-10-23 Y. L. Liu , J. P. Yuan , J. B. Wang , X. W. Liu , N. Wang , R. Yuen

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

Multifrequency polarimetric observations made with the Very Long Baseline Array of the quasar 3C216 reveal the presence of Faraday rotation measures (RMs) in excess of 2000 rad/m**2 in the source rest frame, in the arc of emission located…

Astrophysics · Physics 2009-10-31 T. Venturi , G. B. Taylor

We have conducted the largest investigation to date into the origin of phase resolved, apparent RM variations in the polarized signals of radio pulsars. From a sample of 98 pulsars based on observations at 1.4 GHz with the Parkes radio…

High Energy Astrophysical Phenomena · Physics 2018-12-12 Cristina-Diana Ilie , Simon Johnston , Patrick Weltevrede

PSR J0901$-$4046, a likely radio-loud neutron star with a period of 75.88 seconds, challenges conventional models of neutron star radio emission. Here, we showcase results from 46 hours of follow-up observations of PSR J0901$-$4046 using…

Aims: We aimed to monitor the optical linear polarimetric signal of the magnetized, rapidly rotating M8.5 dwarf TVLM 513$-$46546. Methods: $R$- and $I$-band linear polarimetry images were collected with the ALFOSC instrument of the 2.56-m…

Solar and Stellar Astrophysics · Physics 2015-08-19 P. A. Miles-Páez , M. R. Zapatero Osorio , E. Pallé
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