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On the Large Phased Array (LPA) of Lebedev Physics Institute (LPI), a search for pulsars outside the Galaxy plane was carried out in a 300 sq. deg area. The search with a sensitivity 5-10 times better than that of previously conducted…

High Energy Astrophysical Phenomena · Physics 2023-05-03 S. A. Tyul'bashev , G. E. Tyul'basheva

A large sample of about two hundred pulsars have been observed to study their subpulse modulation at an observing wavelength of (when achievable) both 21 and 92 cm using the Westerbork Synthesis Radio Telescope. For 57 pulsars drifting…

Astrophysics · Physics 2009-11-13 Patrick Weltevrede , Ben Stappers , R. T. Edwards

Up to November 2022, 267 pulsars have been discovered in 36 globular clusters (GCs). In this paper, we present our studies on the distribution of GC pulsar parameters and the detection efficiency. The power law relation between the average…

High Energy Astrophysical Phenomena · Physics 2023-03-20 De-Jiang Yin , Li-Yun Zhang , Bao-Da Li , Ming-Hui Li , Lei Qian , Zhichen Pan

We report detection and analysis of the largest low-frequency (200 - 231.25 MHz) sample of Crab giant pulses (GPs) reported in the literature. In total about 95000 GPs were detected. The observations were performed in 2024/2025 with the…

High Energy Astrophysical Phenomena · Physics 2025-10-15 M. Sokolowski , P. Kumar , S. Dhavali , B. W. Meyers , N. D. R. Bhat , A. Bera , S. McSweeney

The search for pulsars in monitoring data obtained at the radio telescope Large Phased Array (LPA) at a frequency of 111 MHz was carried out. Daily round-the-clock observations were carried out for about 3,000 days. The duration of the…

High Energy Astrophysical Phenomena · Physics 2024-01-22 S. A. Tyul'bashev , G. E. Tyul'basheva , M. A. Kitaeva , I. L. Ovchinnikov , V. V. Oreshko , S. V. Logvinenko

Aims. To investigate the flux density modulation from pulsars and the existence of specific behaviour of modulation index versus frequency. Methods. Several pulsars have been observed with the Effelsberg radio telescope at 8.35 GHz. Their…

Solar and Stellar Astrophysics · Physics 2015-06-15 O. Maron , M. Serylak , J. Kijak , K. Krzeszowski , D. Mitra , A. Jessner

We report the detection of giant pulse emission from PSR~B0950+08 in 12 hours of observations made simultaneously at 42~MHz and 74~MHz, using the first station of the Long Wavelength Array, LWA1. We detected 275 giant pulses (in 0.16\% of…

High Energy Astrophysical Phenomena · Physics 2016-08-10 Jr-Wei Tsai , John H Simonetti , Bernadine Akukwe , Brandon Bear , Jonathan D Gough , Peter Shawhan , Michael Kavic

We present a large survey of giant pulses from the Crab Pulsar as observed with the first station of the Long Wavelength Array. Automated methods for detecting giant pulses at low frequencies where scattering becomes prevalent are also…

Solar and Stellar Astrophysics · Physics 2016-10-05 T. Eftekhari , K. Stovall , J. Dowell , F. K. Schinzel , G. B. Taylor

Aims. We explore frequency-dependent changes in pulsar radio emission by analyzing their profile widths and emission heights, assessing whether the simple radius-to-frequency mapping (RFM) or the fan beam model can describe the data.…

High Energy Astrophysical Phenomena · Physics 2026-01-14 P. Jaroenjittichai , S. Johnston , S. Dai , M. Kerr , M. E. Lower , R. N. Manchester , L. S. Oswald , R. M. Shannon , C. Sobey , P. Weltevrede

We report the discovery of the first new pulsar with the Murchison Widefield Array (MWA), PSR J0036$-$1033, a long-period (0.9 s) nonrecycled pulsar with a dispersion measure (DM) of 23.1 ${\rm pc\,cm^{-3}}$. It was found after processing…

We report on findings from scintillation analyses using high-cadence observations of eight canonical pulsars with observing baselines ranging from one to three years. We obtain scintillation bandwidth and timescale measurements for all…

Interstellar radio wave scattering leads to flux density fluctuations and pulse broadening of pulsar signals. However, Galactic distribution and the structure of the scattering medium are still poorly understood. Pulsar pulse broadening…

Astrophysics of Galaxies · Physics 2023-12-19 Qiuyi He , Xun Shi

We examine the spectra of 23 fast radio bursts detected in a fly's-eye survey with the Australian SKA Pathfinder, including those of three bursts not previously reported. The mean spectral index of $\alpha = -1.6_{-0.2}^{+0.3}$ ($F_\nu…

High Energy Astrophysical Phenomena · Physics 2019-02-27 J. -P. Macquart , R. M. Shannon , K. W. Bannister , C. W. James , R. D. Ekers , J. D. Bunton

We analyse the stochastic properties of the 49 pulsars that comprise the first International Pulsar Timing Array (IPTA) data release. We use Bayesian methodology, performing model selection to determine the optimal description of the…

Pulsar polarization profiles are very basic database for understanding the emission processes in pulsar magnetosphere. After careful polarization calibration of the 19-beam L-band receiver and verification of beam-offset observation…

High Energy Astrophysical Phenomena · Physics 2023-07-21 P. F. Wang , J. L. Han , J. Xu , C. Wang , Y. Yan , W. C. Jing , W. Q. Su , D. J. Zhou , T. Wang

Timing observations are crucial for determining the basic parameters of newly discovered pulsars. Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST) with the L-band 19-beam receiver covering the frequency range of…

High Energy Astrophysical Phenomena · Physics 2023-10-12 W. Q. Su , J. L. Han , P. F. Wang , J. P. Yuan , Chen Wang , D. J. Zhou , Tao Wang , Yi Yan , W. C. Jing , Z. L. Yang , N. N. Cai , Xue Chen , Jun Xu , Lang Xie , H. G. Wang , R. X. Xu , X. P. You

We report on the discovery of three new pulsars in the first blind survey of the north Galactic plane (45 degrees < l < 135 degrees; |b| < 1 degrees with the Giant Meterwave Radio telescope (GMRT) at an intermediate frequency of 610 MHz.…

Distance measurements of gamma-ray pulsars are challenging questions in present pulsar studies. The Large Area Telescope (LAT) aboard the Fermi gamma-ray observatory discovered more than 70 gamma-ray pulsars including 24 new gamma-selected…

High Energy Astrophysical Phenomena · Physics 2015-05-27 W. Wang

It has been proposed that radio pulsars can be distinguished from other point-like radio sources in continuum images by their unique interstellar scintillation signatures. Using data from the Australian Square Kilometre Array Pathfinder…

Detecting and studying pulsars above a few GHz in the radio band is challenging due to the typical faintness of pulsar radio emission, their steep spectra, and the lack of observatories with sufficient sensitivity operating at high…

High Energy Astrophysical Phenomena · Physics 2018-06-29 Pablo Torne
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