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A method for pulsar timing based on monitoring data from the 3-th diagramm of the Large Phased Array (LPA LPI) radio telescope is proposed. In our observations, recorders with quartz clock generators were used as local clocks. Such…

High Energy Astrophysical Phenomena · Physics 2025-04-14 S. A. Andrianov , V. A. Potapov , S. A. Tyul'bashev , S. V. Logvinenko , V. V. Oreshko

Pulsar timing arrays (PTAs) are being used to search for very low frequency gravitational waves. A gravitational wave signal appears in pulsar timing residuals through two components: one independent of and one dependent on the pulsar's…

High Energy Astrophysical Phenomena · Physics 2015-06-03 Matthew Pitkin

Pulsar Timing Array (PTA) experiments exploit the clock-like behaviour of an array of millisecond pulsars, with the goal of detecting low-frequency gravitational waves. PTA experiments have been in operation over the last decade, led by…

Instrumentation and Methods for Astrophysics · Physics 2018-03-28 Caterina Tiburzi

Pulsar timing array projects measure the pulse arrival times of millisecond pulsars for the primary purpose of detecting nanohertz-frequency gravitational waves. The measurements include contributions from a number of astrophysical and…

Pulse profile stability in millisecond pulsars (MSPs) is a key factor in achieving high-precision timing essential for detecting nanohertz gravitational waves with Pulsar Timing Arrays (PTAs). In this work, we present a systematic analysis…

High Energy Astrophysical Phenomena · Physics 2025-09-17 Ankita Ghosh , Bhaswati Bhattacharyya , Rahul Sharan , Patrick Weltevrede , Jayanta Roy , Sangita Kumari

Pulsars are the most stable macroscopic clocks found in nature. Spinning with periods as short as a few milliseconds, their stability can supersede that of the best atomic clocks on Earth over timescales of a few years. Stable clocks are…

High Energy Astrophysical Phenomena · Physics 2019-03-06 Delphine Perrodin , Alberto Sesana

We describe 14 years of public data from the Parkes Pulsar Timing Array (PPTA), an ongoing project that is producing precise measurements of pulse times of arrival from 26 millisecond pulsars using the 64-m Parkes radio telescope with a…

The algorithm of the ensemble pulsar time scale (PT$_{\rm ens}$) based on the optimal Wiener filtration method has been proposed. This algorithm allows the separation of the contributions to the post-fit pulsar timing residuals of the…

Instrumentation and Methods for Astrophysics · Physics 2011-09-20 Alexander E. Rodin

Pulsar timing is a valuable source of high-precision astrophysical measurements which can be used to probe gravitational physics, including by detecting gravitational waves. An important factor limiting the precision of these measurements…

High Energy Astrophysical Phenomena · Physics 2026-05-22 Ross J. Jennings , James M. Cordes , Shami Chatterjee , Maura A. McLaughlin

We have begun an exciting era for gravitational wave detection, as several world-leading experiments are breaching the threshold of anticipated signal strengths. Pulsar timing arrays (PTAs) are pan-Galactic gravitational wave detectors that…

Instrumentation and Methods for Astrophysics · Physics 2015-11-26 Sarah Burke-Spolaor

Extracting Times of Arrival from pulsar radio signals depends on the knowledge of the pulsars pulse profile and how this template is generated. We examine pulsar template generation with Bayesian methods. We will contrast the classical…

Instrumentation and Methods for Astrophysics · Physics 2015-06-23 M. Imgrund , D. J. Champion , M. Kramer , H. Lesch

We searched for an isotropic stochastic gravitational wave background in the second data release of the International Pulsar Timing Array, a global collaboration synthesizing decadal-length pulsar-timing campaigns in North America, Europe,…

High Energy Astrophysical Phenomena · Physics 2022-01-12 J. Antoniadis , Z. Arzoumanian , S. Babak , M. Bailes , A. -S. Bak Nielsen , P. T. Baker , C. G. Bassa , B. Becsy , A. Berthereau , M. Bonetti , A. Brazier , P. R. Brook , M. Burgay , S. Burke-Spolaor , R. N. Caballero , J. A. Casey-Clyde , A. Chalumeau , D. J. Champion , M. Charisi , S. Chatterjee , S. Chen , I. Cognard , J. M. Cordes , N. J. Cornish , F. Crawford , H. T. Cromartie , K. Crowter , S. Dai , M. E. DeCesar , P. B. Demorest , G. Desvignes , T. Dolch , B. Drachler , M. Falxa , E. C. Ferrara , W. Fiore , E. Fonseca , J. R. Gair , N. Garver-Daniels , B. Goncharov , D. C. Good , E. Graikou , L. Guillemot , Y. J. Guo , J. S. Hazboun , G. Hobbs , H. Hu , K. Islo , G. H. Janssen , R. J. Jennings , A. D. Johnson , M. L. Jones , A. R. Kaiser , D. L. Kaplan , R. Karuppusamy , M. J. Keith , L. Z. Kelley , M. Kerr , J. S. Key , M. Kramer , M. T. Lam , W. G. Lamb , T. J. W. Lazio , K. J. Lee , L. Lentati , K. Liu , J. Luo , R. S. Lynch , A. G. Lyne , D. R. Madison , R. A. Main , R. N. Manchester , A. McEwen , J. W. McKee , M. A. McLaughlin , M. B. Mickaliger , C. M. F. Mingarelli , C. Ng , D. J. Nice , S. Os lowski , A. Parthasarathy , T. T. Pennucci , B. B. P. Perera , D. Perrodin , A. Petiteau , N. S. Pol , N. K. Porayko , A. Possenti , S. M. Ransom , P. S. Ray , D. J. Reardon , C. J. Russell , A. Samajdar , L. M. Sampson , S. Sanidas , J. M. Sarkissian , K. Schmitz , L. Schult , A. Sesana , G. Shaifullah , R. M. Shannon , B. J. Shapiro-Albert , X. Siemens , J. Simon , T. L. Smith , L. Speri , R. Spiewak , I. H. Stairs , B. W. Stappers , D. R. Stinebring , J. K. Swiggum , S. R. Taylor , G. Theureau , C. Tiburzi , M. Vallisneri , E. van der Wateren , A. Vecchio , J. P. W. Verbiest , S. J. Vigeland , H. Wahl , J. B. Wang , J. Wang , L. Wang , C. A. Witt , S. Zhang , X. J. Zhu

Time scales consistently provide precise time stamps and time intervals by combining atomic frequency standards with a reliable local oscillator. Optical frequency standards, however, have not been applied to the generation of time scales,…

Atomic Physics · Physics 2018-03-12 Hidekazu Hachisu , Fumimaru Nakagawa , Yuko Hanado , Tetsuya Ido

We present a robust approach to incorporating models for the time-variable broadening of the pulse profile due to scattering in the ionized interstellar medium into profile-domain pulsar timing analysis. We use this approach to…

Instrumentation and Methods for Astrophysics · Physics 2017-04-12 L. Lentati , M. Kerr , S. Dai , R. M. Shannon , G. Hobbs , S. Oslowski

A new Bayesian software package for the analysis of pulsar timing data is presented in the form of TempoNest which allows for the robust determination of the non-linear pulsar timing solution simultaneously with a range of additional…

Instrumentation and Methods for Astrophysics · Physics 2013-12-04 Lindley Lentati , Paul Alexander , Michael P. Hobson , Farhan Feroz , Rutger van Haasteren , Kejia Lee , Ryan M. Shannon

Millisecond and binary pulsars are the most stable natural frequency standards which admits to introduce modified versions of universal and ephemeris time scales based correspondingly on the intrinsic rotation of pulsar and on its orbital…

Data Analysis, Statistics and Probability · Physics 2007-05-23 Sergei M. Kopeikin , Vladimir A. Potapov

A pulsar timing array (PTA) refers to a program of regular, high-precision timing observations of a widely distributed array of millisecond pulsars. Here we review the status of the three primary PTA projects and the joint International…

Instrumentation and Methods for Astrophysics · Physics 2019-04-03 George Hobbs , Shi Dai

We present results of more than three decades of timing measurements of the first known binary pulsar, PSR B1913+16. Like most other pulsars, its rotational behavior over such long time scales is significantly affected by small-scale…

Astrophysics of Galaxies · Physics 2011-06-08 Joel M. Weisberg , David J. Nice , Joseph H. Taylor

Pulsar timing arrays act to detect gravitational waves by observing the small, correlated effect the waves have on pulse arrival times at Earth. This effect has conventionally been evaluated assuming the gravitational wave phasefronts are…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Xihao Deng , Lee Samuel Finn