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Pulsar timing is a foundational part of pulsar research to triage the most interesting systems and to characterise properties (rotational or otherwise) of the population of these extreme objects. Due to the efficiency of a number of…

高能天体物理现象 · 物理学 2026-05-25 D. J. McKenna , E. F. Keane , P. T. Gallagher , J. McCauley

This paper presents the results of a joint radio and gamma-ray timing campaign on the nine millisecond pulsars (MSPs) discovered as part of the L-band targeted survey of Fermi-LAT sources performed in the context of the Transients and…

This paper describes the new Globular Clusters GMRT Pulsar Search (GCGPS) survey. This survey aims to find MSPs in the globular clusters (GCs) of the Milky Way using uGMRT. The observations use the uGMRT's Band-4 (550$-$750 MHz) and Band-3…

A number of pulsars are known to have profile evolution on timescales of months, often correlated with spin-down rate changes. Here, we present the first result from 3 years of monitoring observations from MeerKAT as part of the Thousand…

高能天体物理现象 · 物理学 2024-02-15 A. Basu , P. Weltevrede , M. J. Keith , S. Johnston , A. Karastergiou , L. S. Oswald , B. Posselt , X. Song , A. D. Cameron

Pulsar timing arrays (PTAs) are anticipated to detect continuous gravitational waves (GWs) from individual supermassive black hole binaries (SMBHBs) in the near future. To identify the host galaxy of a GW source, PTAs require significantly…

广义相对论与量子宇宙学 · 物理学 2026-01-12 Ryo Kato , Keitaro Takahashi

We present a new analysis of the profile data from the 47 millisecond pulsars comprising the 12.5-year data set of the North American Nanohertz Observatory for Gravitational Waves (NANOGrav), which is presented in a parallel paper (Alam et…

Mapping the integrated 21cm emission line from dark matter-tracing neutral hydrogen gas is the primary science goal for MeerKLASS (MeerKAT's Large Area Synoptic Survey). Prior to the arrival of MeerKAT, this intensity mapping technique had…

Pulsar timing arrays (PTAs) use an array of millisecond pulsars to search for gravitational waves in the nanohertz regime in pulse time of arrival data. This paper presents rigorous tests of PTA methods, examining their consistency across…

高能天体物理现象 · 物理学 2025-05-14 Aaron D. Johnson , Patrick M. Meyers , Paul T. Baker , Neil J. Cornish , Jeffrey S. Hazboun , Tyson B. Littenberg , Joseph D. Romano , Stephen R. Taylor , Michele Vallisneri , Sarah J. Vigeland , Ken D. Olum , Xavier Siemens , Justin A. Ellis , Rutger van Haasteren , Sophie Hourihane , Gabriella Agazie , Akash Anumarlapudi , Anne M. Archibald , Zaven Arzoumanian , Laura Blecha , Adam Brazier , Paul R. Brook , Sarah Burke-Spolaor , Bence Bécsy , J. Andrew Casey-Clyde , Maria Charisi , Shami Chatterjee , Katerina Chatziioannou , Tyler Cohen , James M. Cordes , Fronefield Crawford , H. Thankful Cromartie , Kathryn Crowter , Megan E. DeCesar , Paul B. Demorest , Timothy Dolch , Brendan Drachler , Elizabeth C. Ferrara , William Fiore , Emmanuel Fonseca , Gabriel E. Freedman , Nate Garver-Daniels , Peter A. Gentile , Joseph Glaser , Deborah C. Good , Kayhan Gültekin , Ross J. Jennings , Megan L. Jones , Andrew R. Kaiser , David L. Kaplan , Luke Zoltan Kelley , Matthew Kerr , Joey S. Key , Nima Laal , Michael T. Lam , William G. Lamb , T. Joseph W. Lazio , Natalia Lewandowska , Tingting Liu , Duncan R. Lorimer , Ryan S. Lynch , Chung-Pei Ma , Dustin R. Madison , Alexander McEwen , James W. McKee , Maura A. McLaughlin , Natasha McMann , Bradley W. Meyers , Chiara M. F. Mingarelli , Andrea Mitridate , Cherry Ng , David J. Nice , Stella Koch Ocker , Timothy T. Pennucci , Benetge B. P. Perera , Nihan S. Pol , Henri A. Radovan , Scott M. Ransom , Paul S. Ray , Shashwat C. Sardesai , Carl Schmiedekamp , Ann Schmiedekamp , Kai Schmitz , Brent J. Shapiro-Albert , Joseph Simon , Magdalena S. Siwek , Ingrid H. Stairs , Daniel R. Stinebring , Kevin Stovall , Abhimanyu Susobhanan , Joseph K. Swiggum , Jacob E. Turner , Caner Unal , Haley M. Wahl , Caitlin A. Witt , Olivia Young

The International Pulsar Timing Array (IPTA) is an organisation whose raison d'etre is to facilitate collaboration between the three main existing PTAs (the EPTA in Europe, NANOGrav in North America and the PPTA in Australia) in order to…

天体物理仪器与方法 · 物理学 2014-03-05 R. N. Manchester

The Large Magellanic Cloud (LMC) presents a unique environment for pulsar population studies due to its distinct star formation characteristics and proximity to the Milky Way. As part of the TRAPUM (TRAnsients and PUlsars with MeerKAT)…

In 2023, after more than two decades of searching, pulsar timing array (PTA) collaborations around the world announced evidence for a stochastic gravitational wave background. It was quickly followed by work from the International Pulsar…

宇宙学与河外天体物理 · 物理学 2025-12-18 David Wright , Kalista Wayt , Jeffrey S. Hazboun , Xavier Siemens , Rutger van Haasteren , Levi Schult , Stephen R. Taylor

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,…

高能天体物理现象 · 物理学 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

Pulsar timing array projects are carrying out high precision observations of millisecond pulsars with the aim of detecting ultra-low frequency (~ 10^{-9} to 10^{-8} Hz) gravitational waves. We show how unambiguous detections of such waves…

太阳与恒星天体物理 · 物理学 2015-05-19 George Hobbs

We present polarization pulse profiles for 56 millisecond pulsars (MSPs) monitored by the Chinese Pulsar Timing Array (CPTA) collaboration using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). The observations centered at…

The extreme timing stability of radio millisecond pulsars (MSPs) combined with their exotic environment and evolutionary history makes them excellent laboratories to probe matter in extreme condition. Population studies indicate that we…

高能天体物理现象 · 物理学 2022-04-06 Bhaswati Bhattacharyya , Jayanta Roy

Pulsar timing arrays (PTAs) are on the verge of detecting low-frequency gravitational waves (GWs) from supermassive black hole binaries (SMBHBs). With continued observations of a large sample of millisecond pulsars, PTAs will reach this…

In the last decade, the use of an ensemble of radio pulsars to constrain the characteristic strain caused by a stochastic gravitational wave background has advanced the cause of detection of very low frequency gravitational waves…

天体物理仪器与方法 · 物理学 2013-01-25 Bhal Chandra Joshi

Accurate polarimetric calibration of the radio pulse profiles from pulsars is crucial for studying their radiation properties at these wavelengths. Inaccurate calibration can also distort recorded pulse profiles, introducing noise in time…

高能天体物理现象 · 物理学 2023-10-11 Lucas Guillemot , Ismaël Cognard , Willem van Straten , Gilles Theureau , Eric Gérard