Status Report on Global Pulsar-Timing-Array Efforts to Detect Gravitational Waves

Abstract

The stability of the spin of pulsars and the precision with which these spins can be determined, allows many unique tests of interest to physics and astrophysics. Perhaps the most challenging and revolutionary of these, is the detection of nanohertz gravitational waves. An increasing number of efforts to detect and study long-period gravitational waves by timing an array of pulsars have been ongoing for several decades and the field is moving ever closer to actual gravitational-wave science. In this review article, we summarise the state of this field by presenting the current sensitivity to gravitational waves and by reviewing recent progress along the multiple lines of research that are part of the continuous push towards greater sensitivity. We also briefly review some of the most recent efforts at astrophysical interpretation of the most recent GW estimates derived from pulsar timing.

arXiv comment37 pages, 4 figures, 4 tables. Accepted for publication in "Results in Physics" special issue

References in corpus (165)

• The ATNF Pulsar Catalogue
• LOFAR: The LOw-Frequency ARray
• The Ekpyrotic Universe: Colliding Branes and the Origin of the Hot Big Bang
• The NANOGrav 15-year Data Set: Evidence for a Gravitational-Wave Background
• Search for an isotropic gravitational-wave background with the Parkes Pulsar Timing Array
• TEMPO2, a new pulsar timing package. I: Overview
• Searching for the nano-Hertz stochastic gravitational wave background with the Chinese Pulsar Timing Array Data Release I
• The second data release from the European Pulsar Timing Array III. Search for gravitational wave signals
• PSRCHIVE and PSRFITS An Open Approach to Radio Pulsar Data Storage and Analysis
• The Five-Hundred-Meter Aperture Spherical Radio Telescope (FAST) Project
• Tests of General Relativity with Binary Black Holes from the second LIGO-Virgo Gravitational-Wave Transient Catalog
• The NANOGrav 15-year Data Set: Search for Signals from New Physics
• The NANOGrav 12.5-year Data Set: Search For An Isotropic Stochastic Gravitational-Wave Background
• Galaxy formation in the Planck Cosmology - I. Matching the observed evolution of star formation rates, colours and stellar masses
• The Parkes Multibeam Pulsar Survey: I. Observing and Data Analysis Systems, Discovery and Timing of 100 Pulsars
• Tempo2, a new pulsar timing package. II: The timing model and precision estimates
• Binary and Millisecond Pulsars
• DSPSR: Digital Signal Processing Software for Pulsar Astronomy
• The Parkes multibeam pulsar survey: VI. Discovery and timing of 142 pulsars and a Galactic population analysis
• European Pulsar Timing Array Limits On An Isotropic Stochastic Gravitational-Wave Background
• The Parkes Pulsar Timing Array Project
• Gravitational waves from binary supermassive black holes missing in pulsar observations
• High-precision timing of 42 millisecond pulsars with the European Pulsar Timing Array
• Vector Dark Matter from Inflationary Fluctuations
• The International Pulsar Timing Array: First Data Release
• Gravitational Waves Probe the Coalescence Rate of Massive Black Hole Binaries
• The NANOGrav 11-year Data Set: Pulsar-timing Constraints On The Stochastic Gravitational-wave Background
• The NANOGrav 15-year Data Set: Constraints on Supermassive Black Hole Binaries from the Gravitational Wave Background
• The NANOGrav 15-year Data Set: Observations and Timing of 68 Millisecond Pulsars
• Limits on the Stochastic Gravitational Wave Background from the North American Nanohertz Observatory for Gravitational Waves
• Upper bounds on the low-frequency stochastic gravitational wave background from pulsar timing observations: current limits and future prospects
• Multifrequency Observations of Radio Pulse Broadening and Constraints on Interstellar Electron Density Microstructure
• The International Pulsar Timing Array second data release: Search for an isotropic Gravitational Wave Background
• On the evidence for a common-spectrum process in the search for the nanohertz gravitational-wave background with the Parkes Pulsar Timing Array
• The NANOGrav Nine-year Data Set: Limits on the Isotropic Stochastic Gravitational Wave Background
• The second data release from the European Pulsar Timing Array I. The dataset and timing analysis
• Low-frequency gravitational radiation from coalescing massive black hole binaries in hierarchical cosmologies
• An analysis of the timing irregularities for 366 pulsars
• The International Pulsar Timing Array: Second data release
• The Astrophysics of Nanohertz Gravitational Waves
• Precision timing of PSR J0437-4715: an accurate pulsar distance, a high pulsar mass and a limit on the variation of Newton's gravitational constant
• Common-red-signal analysis with 24-yr high-precision timing of the European Pulsar Timing Array: Inferences in the stochastic gravitational-wave background search
• Placing limits on the stochastic gravitational-wave background using European Pulsar Timing Array data
• Assessing the Role of Spin Noise in the Precision Timing of Millisecond Pulsars
• The International Pulsar Timing Array
• Optimal strategies for gravitational wave stochastic background searches in pulsar timing data
• Pulsar timing signal from ultralight scalar dark matter
• Expected properties of the first gravitational wave signal detected with pulsar timing arrays
• Searching for an oscillating massive scalar field as a dark matter candidate using atomic hyperfine frequency comparisons
• Model-Independent Test of General Relativity: An Extended post-Einsteinian Framework with Complete Polarization Content
• An ultra-wide bandwidth (704 to 4032 MHz) receiver for the Parkes radio telescope
• The stochastic background: scaling laws and time to detection for pulsar timing arrays
• Faint Scattering Around Pulsars: Probing the Interstellar Medium on Solar System Size Scales
• The Parkes Pulsar Timing Array Third Data Release
• MICROSCOPE mission: first constraints on the violation of the weak equivalence principle by a light scalar dilaton
• Timing stability of millisecond pulsars and prospects for gravitational-wave detection
• Inflationary interpretation of the stochastic gravitational wave background signal detected by pulsar timing array experiments
• TempoNest: A Bayesian approach to pulsar timing analysis
• PINT: A Modern Software Package for Pulsar Timing
• The MeerKAT Telescope as a Pulsar Facility: System verification and early science results from MeerTime
• Pulsar timing analysis in the presence of correlated noise
• Gravitational-wave Limits from Pulsar Timing Constrain Supermassive Black Hole Evolution
• The gravitational-wave background null hypothesis: Characterizing noise in millisecond pulsar arrival times with the Parkes Pulsar Timing Array
• The NANOGrav 15-year Data Set: Bayesian Limits on Gravitational Waves from Individual Supermassive Black Hole Binaries
• The NANOGrav 15-Year Data Set: Detector Characterization and Noise Budget
• Prospects for High-Precision Pulsar Timing with the New Effelsberg PSRIX Backend
• Orbital Motion in the Radio Galaxy 3C 66B: Evidence for a Supermassive Black Hole Binary
• A study of spatial correlations in pulsar timing array data
• From Spin Noise to Systematics: Stochastic Processes in the First International Pulsar Timing Array Data Release
• Parkes Pulsar Timing Array constraints on ultralight scalar-field dark matter
• Single Sources in the Low-Frequency Gravitational Wave Sky: properties and time to detection by pulsar timing arrays
• A LOFAR census of millisecond pulsars
• Optimal strategies for continuous gravitational wave detection in pulsar timing arrays
• Frequency-Dependent Dispersion Measures and Implications for Pulsar Timing
• Measuring the mass of solar system planets using pulsar timing
• Identifying and mitigating noise sources in precision pulsar timing data sets
• The MeerKAT Pulsar Timing Array: First Data Release
• Time-domain Implementation of the Optimal Cross-Correlation Statistic for Stochastic Gravitational-Wave Background Searches in Pulsar Timing Data
• LEAP: the large European array for pulsars
• The second data release from the European Pulsar Timing Array II. Customised pulsar noise models for spatially correlated gravitational waves
• Elementary Wideband Timing of Radio Pulsars
• A pulsar-based timescale from the International Pulsar Timing Array
• Modeling the uncertainties of solar-system ephemerides for robust gravitational-wave searches with pulsar timing arrays
• The Need For Speed: Rapid Refitting Techniques for Bayesian Spectral Characterization of the Gravitational Wave Background Using PTAs
• Three-dimensional Evolution of Solar Wind during Solar Cycles 22-24
• The CHIME Pulsar Project: System Overview
• The Indian Pulsar Timing Array: First data release
• Scattering analysis of LOFAR pulsar observations
• Variance of the Hellings-Downs Correlation
• The second data release from the European Pulsar Timing Array: VI. Challenging the ultralight dark matter paradigm
• Massive black hole evolution models confronting the n-Hz amplitude of the stochastic gravitational wave background
• Cyclic Spectral Analysis of Radio Pulsars
• Searching for continuous Gravitational Waves in the second data release of the International Pulsar Timing Array
• The noise properties of 42 millisecond pulsars from the European Pulsar Timing Array and their impact on gravitational wave searches
• Precision orbital dynamics from interstellar scintillation arcs for PSR J0437-4715
• An improved solar wind electron-density model for pulsar timing
• A Second Chromatic Timing Event of Interstellar Origin toward PSR J1713+0747
• Noise-marginalized optimal statistic: A robust hybrid frequentist-Bayesian statistic for the stochastic gravitational-wave background in pulsar timing arrays
• Hellings and Downs correlation of an arbitrary set of pulsars
• Detecting eccentric supermassive black hole binaries with pulsar timing arrays: Resolvable source strategies
• Gravitational wave research using pulsar timing arrays
• Pulsar radio emission mechanisms: a critique
• Discovery of Two Relativistic Neutron Star-White Dwarf Binaries
• Estimating the sensitivity of pulsar timing arrays
• Modelling annual and orbital variations in the scintillation of the relativistic binary PSR J1141$-$6545
• Gravitational wave emission from binary supermassive black holes
• Constraining alternative theories of gravity using pulsar timing arrays
• The disturbance of a millisecond pulsar magnetosphere
• The impact of Solar wind variability on pulsar timing
• Generic searches for alternative gravitational wave polarizations with networks of interferometric detectors
• Forecasting pulsar timing array sensitivity to anisotropy in the stochastic gravitational wave background
• Noise analysis in the European Pulsar Timing Array data release 2 and its implications on the gravitational-wave background search
• Studying the solar system with the International Pulsar Timing Array
• Constraining the Polarization of Gravitational Waves with the Parkes Pulsar Timing Array Second Data Release
• A Gamma-ray Pulsar Timing Array Constrains the Nanohertz Gravitational Wave Background
• First detection of frequency-dependent, time-variable dispersion measures
• Pulsar and cosmic variances of pulsar timing-array correlation measurements of the stochastic gravitational wave background
• Common-spectrum process versus cross-correlation for gravitational-wave searches using pulsar timing arrays
• On the usefulness of existing Solar-wind models for pulsar timing corrections
• Dispersion measure variability for 36 millisecond pulsars at 150MHz with LOFAR
• Evaluating the prevalence of spurious correlations in pulsar timing array datasets
• High-precision search for dark photon dark matter with the Parkes Pulsar Timing Array
• Pulsars probe the low-frequency gravitational sky: Pulsar Timing Arrays basics and recent results
• Consistency of the Parkes Pulsar Timing Array Signal with a Nanohertz Gravitational-wave Background
• Evidence for profile changes in PSR J1713+0747 using the uGMRT
• Model Dependence of Bayesian Gravitational-Wave Background Statistics for Pulsar Timing Arrays
• The NANOGrav 11-year Data Set: Solar Wind Sounding Through Pulsar Timing
• The Scintillation Velocity of the Relativistic Binary Pulsar PSR J1141-6545
• Improving timing sensitivity in the microhertz frequency regime: limits from PSR J1713$+$0747 on gravitational waves produced by super-massive black-hole binaries
• Pulsar timing array signals induced by black hole binaries in relativistic eccentric orbits
• Quality over Quantity: Optimizing pulsar timing array analysis for stochastic and continuous gravitational wave signals
• A morphology-independent test of the mixed polarization content of gravitational wave signals from compact binary coalescences
• Pulsar scintillation studies with LOFAR. I. The census
• Wide-band Profile Domain Pulsar Timing Analysis
• Upgraded antennas for pulsar observations in the Argentine Institute of Radio astronomy
• The Thousand-Pulsar-Array programme on MeerKAT -- X. Scintillation arcs of 107 pulsars
• Pulsars with NenuFAR: backend and pipelines
• Scattering study of Pulsars below 100 MHz using LWA1
• Nanohertz Gravitational Wave Astronomy during the SKA Era: An InPTA perspective
• Studying the Solar system dynamics using pulsar timing arrays and the LINIMOSS dynamical model
• Long-term scintillation studies of EPTA pulsars. I. Observations and basic results
• High Precision Measurements of Interstellar Dispersion Measure with the upgraded GMRT
• Ephemeris Errors and the Gravitational Wave Signal: Harmonic Mode Coupling in Pulsar Timing Array Searches
• Gravitational signal propagation in the Double Pulsar studied with the MeerKAT telescope
• Wideband timing of the Parkes Pulsar Timing Array UWL data
• Variable Scintillation Arcs of Millisecond Pulsars observed with the Large European Array for Pulsars
• Exploring the time variability of the Solar Wind using LOFAR pulsar data
• Deconvolving Pulsar Signals with Cyclic Spectroscopy: A Systematic Evaluation
• Noise analysis of the Indian Pulsar Timing Array data release I
• Profile changes associated with DM events in PSR J1713+0747
• A comparative analysis of pulse time-of-arrival creation methods
• Timing stability of black widow pulsars
• Mass measurements and 3D orbital geometry of PSR J1933$-$6211
• A dynamical approach in exploring the unknown mass in the Solar system using pulsar timing arrays
• Exploring the Capabilities of Gibbs Sampling in Pulsar Timing Arrays
• Determining electron column density fluctuations in a dominant scattering region using pulsar scintillation
• Post-Newtonian-accurate pulsar timing array signals induced by inspiralling eccentric binaries: accuracy, computational cost, and single-pulsar search
• Analysis of the ionized interstellar medium and orbital dynamics of PSR~J1909-3744 using scintillation arcs
• Validation of heliospheric modeling algorithms through pulsar observations I: Interplanetary scintillation-based tomography
• Limits on the Mass, Velocity and Orbit of PSR J1933$-$6211
• PSR J0437-4715: The Argentine Institute of Radioastronomy 2019-2020 Observational Campaign
• Pulsar Scintillation Studies with LOFAR: II. Dual-frequency scattering study of PSR J0826+2637 with LOFAR and NenuFAR
• CMEchaser, detecting line-of-sight occultations due to Coronal Mass Ejections
• Multi-band Extension of the Wideband Timing Technique
• Gravitational Wave Searches with Pulsar Timing Arrays. I: Cancellation of Clock and Ephemeris Noises

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• Bootstrapping spinning two body problem in dynamical Chern-Simons gravity using worldline QFT
• Constraining string cosmology with the gravitational-wave background using the NANOGrav 15-year data set
• Regularizing the Pulsar Timing Array likelihood: A path towards Fourier Space
• Effects of Coronal Mass Ejection on PSR J1022+1001 and Possible Mode Change of PSR J2145-0750 in the InPTA DR2
• Long-term Timing Results of Ecliptic Pulsars Observed with I-LOFAR
• Implications of pulsar timing arrays for Gauss-Bonnet Inflation
• Accurate pulsar timing array residual variances and correlation of the stochastic gravitational wave background
• An updated constraint for the Gravitational Wave Background from the Gamma-ray Pulsar Timing Array