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Related papers: Timing stability of black widow pulsars

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We present the first measurement of a non-zero magnetic field in the eclipsing material of a black widow pulsar. Black widows are millisecond pulsars which are ablating their companions; therefore they are often proposed as one potential…

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 have carried out a sensitive radio pulsar survey along the northern Galactic plane ($50^{\circ} < l < 60^{\circ}$ and $|b| \lapp 2^{\circ}$) using the Parkes 20-cm multibeam system. We observed each position for 70-min on two separate…

Solar and Stellar Astrophysics · Physics 2015-06-16 D. R. Lorimer , F. Camilo , M. A. McLaughlin

Eclipses of radio emission have been reported for ~ 58 spider millisecond pulsars (MSP), of which only around 19% have been extensively studied. Such studies at low frequencies are crucial for probing the properties of the eclipse medium,…

High Energy Astrophysical Phenomena · Physics 2024-11-27 Sangita Kumari , Bhaswati Bhattacharyya , Devojyoti Kansabanik , Rahul Sharan , Ankita Ghosh , Jayanta Roy

We present results of long-term timing of eclipsing binaries PSR B1744-24A and PSR B1957+20 at Arecibo, the VLA, and Green Bank. Both pulsars exhibit irregularities in pulsar rotation and orbital motion. Increases and decreases of the…

Astrophysics · Physics 2007-05-23 David Nice , Zaven Arzoumanian , Stephen Thorsett

We report on the determination of the astrometric, spin and orbital parameters for PSR J1953+1846A, a "black widow" binary millisecond pulsar in the globular cluster M71. By using the accurate position and orbital parameters obtained from…

Solar and Stellar Astrophysics · Physics 2015-07-15 M. Cadelano , C. Pallanca , F. R. Ferraro , I. Stairs , S. M. Ransom , E. Dalessandro , B. Lanzoni , J. W. T. Hessels , P. C. C. Freire

We have carried out high-precision timing measurements of the binary millisecond pulsar PSR J2051$-$0827 with the Effelsberg 100-m radio telescope of the Max-Planck-Institut f\"ur Radioastronomie and with the Lovell 76-m radio telescope at…

Astrophysics · Physics 2009-11-07 O. Doroshenko , O. Loehmer , M. Kramer , A. Jessner , R. Wielebinski , A. G. Lyne , Ch. Lange

Time-domain analysis of an archival XMM-Newton observation unveiled a very unusual variability pattern in the soft X-ray emission of PSR J1311-3430, a black widow millisecond pulsar in a tight binary (P_B=93.8 min) with a very low-mass…

High Energy Astrophysical Phenomena · Physics 2022-11-16 Andrea De Luca , Martino Marelli , Sandro Mereghetti , Ruben Salvaterra , Roberto Mignani , Andrea Belfiore

Black widows are millisecond pulsars ablating their companions. The material blown from the companion blocks the radio emission, resulting in radio eclipses. The properties of the eclipse medium are poorly understood. Here, we present…

High Energy Astrophysical Phenomena · Physics 2023-07-26 S. Q. Wang , J. B. Wang , D. Z. Li , J. M. Yao , R. N. Manchester , G. Hobbs , N. Wang , S. Dai , H. Xu , R. Luo , Y. Feng , W. Y. Wang , D. Li , Y. W. Yu , Z. X. Du , C. H. Niu , S. B. Zhang , C. M. Zhang

We have analyzed 5.5 years of timing observations of 7 'slowly' rotating radio pulsars, made with the Westerbork Synthesis Radio Telescope. We present improved timing solutions and 30, mostly small, new glitches. Particularly interesting…

Astrophysics · Physics 2009-11-11 G. H. Janssen , B. W. Stappers

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 have used the Robert C. Byrd Green Bank Telescope to time nine previously known pulsars without published timing solutions in the globular clusters M62, NGC 6544, and NGC 6624. We have full timing solutions that measure the spin,…

High Energy Astrophysical Phenomena · Physics 2012-01-10 Ryan S. Lynch , Paulo C. C. Freire , Scott M. Ransom , Bryan A. Jacoby

We present timing models for 20 millisecond pulsars in the Parkes Pulsar Timing Array. The precision of the parameter measurements in these models has been improved over earlier results by using longer data sets and modelling the…

We present results from a long-term monitoring of frequency dependent eclipses of the radio emission from PSR J1544+4937 which is a ``black widow spider'' millisecond pulsar (MSP) in a compact binary system. The majority of such systems…

High Energy Astrophysical Phenomena · Physics 2023-11-06 Sangita Kumari , Bhaswati Bhattacharyya , Rahul Sharan , Devojyoti Kansabanik , Benjamin Stappers , Jayanta Roy

We present the discovery and timing solutions of four millisecond pulsars (MSPs) discovered in the Arecibo 327 MHz Drift-Scan Pulsar Survey. Three of these pulsars are in binary systems, consisting of a redback (PSR J2055+1545), a black…

This paper is the second in a series where we report the results of the long-term timing of the millisecond pulsars (MSPs) in 47 Tucanae with the Parkes 64-m radio telescope. We obtain improved timing parameters that provide additional…

High Energy Astrophysical Phenomena · Physics 2018-04-03 P. C. C. Freire , A. Ridolfi , M. Kramer , C. Jordan , R. N. Manchester , P. Torne , J. Sarkissian , C. O. Heinke , N. D'Amico , F. Camilo , D. R. Lorimer , A. G. Lyne

We present timing solutions for 12 pulsars discovered in the Green Bank North Celestial Cap (GBNCC) 350 MHz pulsar survey, including six millisecond pulsars (MSPs), a double neutron star (DNS) system, and a pulsar orbiting a massive white…

We report on the discovery and timing observations of 29 distant long-period pulsars discovered in the ongoing Arecibo PALFA pulsar survey. Following discovery with the Arecibo Telescope, confirmation and timing observations of these…

We have observed and analysed the eclipses of the black widow pulsar J1810+1744 at low radio frequencies. Using LOw-Frequency ARray (LOFAR) and Westerbork Synthesis Radio Telescope observations between 2011--2015 we have measured variations…

We report on the determination of astrometric, spin and orbital parameters for PSR J1518+0204C, a "black widow" binary millisecond pulsar in the globular cluster M5. The accurate position and orbital parameters obtained from radio timing…

Solar and Stellar Astrophysics · Physics 2015-06-22 C. Pallanca , S. M. Ransom , F. R. Ferraro , E. Dalessandro , B. Lanzoni , J. W. T. Hessels , I. Stairs , P. C. C. Freire