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Related papers: PuMaII: A wide band pulsar machine for the WSRT

200 papers

Making precise measurements of pulsar dispersion measures (DMs) and applying suitable corrections for them is amongst the major challenges in high-precision timing programmes such as pulsar timing arrays (PTAs). While the advent of…

High Energy Astrophysical Phenomena · Physics 2022-05-25 Dilpreet Kaur , N. D. Ramesh Bhat , Shi Dai , Samuel J. McSweeney , Ryan M. Shannon , Sanjay Kudale , Willem van Straten

A "pulsar timing array" (PTA), in which observations of a large sample of pulsars spread across the celestial sphere are combined, allows investigation of "global" phenomena such as a background of gravitational waves or instabilities in…

We present an implementation of the coherent dedispersion algorithm capable of dedispersing high-time-resolution radio observations to many different dispersion measures (DMs). This approach allows the removal of the dispersive effects of…

Instrumentation and Methods for Astrophysics · Physics 2016-07-05 C. G. Bassa , Z. Pleunis , J. W. T. Hessels

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

The Murchison Widefield Array (MWA) is a low-frequency aperture array capable of high-time and frequency resolution astronomy applications such as pulsar studies. The large field-of-view of the MWA (hundreds of square degrees) can also be…

Instrumentation and Methods for Astrophysics · Physics 2022-05-18 N. A. Swainston , N. D. R. Bhat , I. S. Morrison , S. J. McSweeney , S. M. Ord , S. E. Tremblay , M. Sokolowski

HIPSR (HI-Pulsar) is a digital signal processing system for the Parkes 21-cm Multibeam Receiver that provides larger instantaneous bandwidth, increased dynamic range, and more signal processing power than the previous systems in use at…

Instrumentation and Methods for Astrophysics · Physics 2017-05-15 D. C. Price , L. Staveley-Smith , M. Bailes , E. Carretti , A. Jameson , M. E. Jones , W. van Straten , S. W. Schediwy

Modeling of frequency-dependent effects, contributed by the turbulence in the free electron density of interstellar plasma, is required to enable the detection of the expected imprints from the stochastic gravitational-wave (GW) background…

We present an ongoing survey with the Nan\c{c}ay Radio Telescope at L-band. The targeted area is $74^\circ \lesssim l <150^\circ$ and $3.5^\circ < |b| < 5^\circ$. This survey is characterized by a long integration time (18 min), large…

High Energy Astrophysical Phenomena · Physics 2015-06-12 Gregory Desvignes , Ismaël Cognard , David Champion , Patrick Lazarus , Patrice Lespagnol , David A. Smith , Gilles Theureau

We present multi-wavelength scatter broadening observations of 47 pulsars, made with the Giant Metre-wave Radio Telescope (GMRT), Ooty Radio Telescope (ORT) and Long Wavelength Array (LWA). The GMRT observations have been made in the phased…

High Energy Astrophysical Phenomena · Physics 2017-09-13 M. A. Krishnakumar , Bhal Chandra Joshi , P. K. Manoharan

The MeerKAT telescope represents an outstanding opportunity for radio pulsar timing science with its unique combination of a large collecting area and aperture efficiency (effective area $\sim$7500 m$^2$), system temperature ($T<20$K), high…

We are performing a transient, microsecond timescale radio sky survey, called "Astropulse," using the Arecibo telescope. Astropulse searches for brief (0.4 {\mu}s to 204.8 {\mu}s), wideband (relative to its 2.5 MHz bandwidth) radio pulses…

Instrumentation and Methods for Astrophysics · Physics 2015-06-12 J. Von Korff , P. Demorest , E. Heien , E. Korpela , D. Werthimer , J. Cobb , M. Lebofsky , D. Anderson , B. Bankay , A. Siemion

We have developed a multi-pixel beamformer technique, which can be used for enhancing the capabilities for studying pulsars using an interferometric array. Using the Giant Metrewave Radio Telescope (GMRT), we illustrate the application of…

Instrumentation and Methods for Astrophysics · Physics 2015-06-11 Jayanta Roy , Bhaswati Bhattacharyya , Yashwant Gupta

We have conducted a survey of intermediate Galactic latitudes using the 13-beam 21-cm multibeam receiver of the Parkes 64-m radio telescope. The survey covered the region enclosed by 5 deg < |b| < 15 deg and -100 deg < l < 50 deg with 4,702…

Astrophysics · Physics 2016-08-30 R. T. Edwards , M. Bailes , W. van Straten , M. C. Britton

NMR is a tool of choice for the measure of diffusion coefficients of species in solution. The DOSY experiment, a 2D implementation of this measure, has proven to be particularly useful for the study of complex mixtures, molecular…

Data Analysis, Statistics and Probability · Physics 2017-04-12 Afef Cherni , Emilie Chouzenoux , Marc-André Delsuc

Pulsars have traditionally been used for research into fundamental physics and astronomy. In this paper, we investigate the expanding applications of radio pulsars in societal and industrial domains beyond their conventional scientific…

Instrumentation and Methods for Astrophysics · Physics 2025-06-11 D. Kaur , G. Hobbs , A. Zic , J. R. Dawson , J. Morgan , W. Ling , S. Camtepe , J. Pieprzyk , M. C. M. Cheung

We have conducted a GPU accelerated reprocessing of $\sim 87\%$ of the archival data from the High Time Resolution Universe South Low Latitude (HTRU-S LowLat) pulsar survey by implementing a pulsar search pipeline that was previously used…

SCUBA-2 is the largest submillimetre wide-field bolometric camera ever built. This 43 square arc-minute field-of-view instrument operates at two wavelengths (850 and 450 microns) and has been installed on the James Clerk Maxwell Telescope…

Context. The advent of wide-band receiver systems on interferometer arrays enables one to undertake high-sensitivity and high-resolution radio continuum surveys of the Galactic plane in a reasonable amount of telescope time. However, to…

Radio pulses from pulsars are affected by plasma dispersion, which results in a frequency-dependent propagation delay. Variations in the magnitude of this effect lead to an additional source of red noise in pulsar timing experiments,…

The Submillimetre Common User Bolometer Array 2 (SCUBA-2) is an instrument operating on the 15-m James Clerk Maxwell Telescope, nominally consisting of 5120 bolometers in each of two simultaneous imaging bands centred over 450 and 850 um.…

Instrumentation and Methods for Astrophysics · Physics 2013-03-26 Edward L. Chapin , David S. Berry , Andrew G. Gibb , Tim Jenness , Douglas Scott , Remo P. J. Tilanus , Frossie Economou , Wayne S. Holland