Pulsars probe the low-frequency gravitational sky: Pulsar Timing Arrays basics and recent results

Abstract

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 groups in Europe, Australia, and North America. These experiments use the most sensitive radio telescopes in the world, extremely precise pulsar timing models and sophisticated detection algorithms to increase the sensitivity of PTAs. No detection of gravitational waves has been made to date with this technique, but PTA upper limits already contributed to rule out some models of galaxy formation. Moreover, a new generation of radio telescopes, such as the Five hundred metre Aperture Spherical Telescope and, in particular, the Square Kilometre Array, will offer a significant improvement to the PTA sensitivity. In this article, we review the basic concepts of PTA experiments, and discuss the latest results from the established PTA collaborations.

Accepted for publication in PASA, 16 pages, 7 figures

References in corpus (33)

• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• TEMPO2, a new pulsar timing package. I: Overview
• Tests of general relativity from timing the double pulsar
• Tempo2, a new pulsar timing package. II: The timing model and precision estimates
• Switched magnetospheric regulation of pulsar spin-down
• Timing Measurements of the Relativistic Binary Pulsar PSR B1913+16
• The stochastic gravitational-wave background from massive black hole binary systems: implications for observations with Pulsar Timing Arrays
• Assessing the Role of Spin Noise in the Precision Timing of Millisecond Pulsars
• Expected properties of the first gravitational wave signal detected with pulsar timing arrays
• Relativistic Measurements from Timing the Binary Pulsar PSR B1913+16
• A Study of Multi-frequency Polarization Pulse Profiles of Millisecond Pulsars
• Dispersion Measure Variations and their Effect on Precision Pulsar Timing
• Nonlinear gravitational-wave memory from binary black hole mergers
• An all-sky search for continuous gravitational waves in the Parkes Pulsar Timing Array data set
• NANOGrav Limits on Gravitational Waves from Individual Supermassive Black Hole Binaries in Circular Orbits
• Limitations in timing precision due to single-pulse shape variability in millisecond pulsars
• The NANOGrav Nine-Year Data Set: Measurement and Interpretation of Variations in Dispersion Measures
• Searching for gravitational wave memory bursts with the Parkes Pulsar Timing Array
• Prospects for gravitational-wave detection and supermassive black hole astrophysics with pulsar timing arrays
• The NANOGrav Nine-Year Data Set: Excess Noise in Millisecond Pulsar Arrival Times
• Selection bias in dynamically-measured super-massive black hole samples: consequences for pulsar timing arrays
• A glitch in the millisecond pulsar J0613-0200
• Measuring pulse times of arrival from broadband pulsar observations
• Scattering analysis of LOFAR pulsar observations
• A millisecond pulsar in an extremely wide binary system
• The disturbance of a millisecond pulsar magnetosphere
• 21-year timing of the black-widow pulsar J2051-0827
• Assessing Pulsar Timing Array Sensitivity to Gravitational Wave Bursts with Memory
• Detection and localization of continuous gravitational waves with pulsar timing arrays: the role of pulsar terms
• Variability, polarimetry, and timing properties of single pulses from PSR J1713+0747 using the Large European Array for Pulsars
• Robust Estimation of Scattering in Pulsar Timing Analysis
• Comparison of Pulsar Positions from Timing and Very Long Baseline Astrometry
• Wide-band Profile Domain Pulsar Timing Analysis

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• The NANOGrav 15-year Data Set: Observations and Timing of 68 Millisecond Pulsars
• The Parkes Pulsar Timing Array Project: Second data release
• A pulsar-based timescale from the International Pulsar Timing Array
• Constraining Sub-Parsec Binary Supermassive Black Holes in Quasars with Multi-Epoch Spectroscopy. III. Candidates from Continued Radial Velocity Tests
• The impact of Solar wind variability on pulsar timing
• First detection of frequency-dependent, time-variable dispersion measures
• Dispersion measure variability for 36 millisecond pulsars at 150MHz with LOFAR
• On the usefulness of existing Solar-wind models for pulsar timing corrections
• Cosmic QCD Epoch at Nonvanishing Lepton Asymmetry
• Detection and timing of gamma-ray pulsations from the $707$ Hz pulsar J0952$-$0607
• Radiative losses and radiation-reaction effects at the first post-Newtonian order in Einstein-Cartan theory
• Pulsar Polarization Arrays
• Gravitational Waves from the Inspiral of Supermassive Black Holes in Galactic-scale Simulations
• Limits on High-Frequency Gravitational Waves in Planetary Magnetospheres
• Searching for Gravitational Waves with Strongly Lensed Repeating Fast Radio Bursts
• Status Report on Global Pulsar-Timing-Array Efforts to Detect Gravitational Waves
• Timing stability of black widow pulsars
• A comparative analysis of pulse time-of-arrival creation methods
• Review of Pulsar Timing Array for Gravitational Wave Research
• Proving the short-wavelength approximation in Pulsar Timing Array gravitational-wave background searches
• Validation of heliospheric modeling algorithms through pulsar observations II: simulations with EUHFORIA
• History of Astronomy in Australia: Big-Impact Astronomy from World War II until the Lunar Landing (1945-1969)
• First-post-Newtonian generation of gravitational waves in Einstein-Cartan theory