The international pulsar timing array project: using pulsars as a gravitational wave detector

Abstract

The International Pulsar Timing Array project combines observations of pulsars from both Northern and Southern hemisphere observatories with the main aim of detecting ultra-low frequency (~10^-9 to 10^-8 Hz) gravitational waves. Here we introduce the project, review the methods used to search for gravitational waves emitted from coalescing supermassive binary black-hole systems in the centres of merging galaxies and discuss the status of the project.

accepted by Classical and Quantum Gravity. Review talk for the Amaldi8 conference series

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• Primordial black holes and scalar induced gravitational waves from Higgs inflation with non-canonical kinetic term
• Gravitational wave memory and its effects on particles and fields
• Gravitational Wave Signatures of Gauged Baryon and Lepton Number
• Reducing instrumental errors in Parkes Pulsar Timing Array data
• Diffractive lensing of nano-Hertz gravitational waves emitted from supermassive binary black holes by intervening galaxies
• Combined significance of spatial coincidence of high energy neutrinos from PSR B1509-58 by Super-Kamiokande and MACRO
• Probing PeV scale SUSY-breaking with Satellite Galaxies and Primordial Gravitational Waves
• Stochastic Gravitational Wave Background from PBH-ABH Mergers
• Effects of gravitational waves on the polarization of pulsars
• Advanced technologies for future ground-based, laser-interferometric gravitational wave detectors
• Probing intermediate scale Froggatt-Nielsen models at future gravitational wave observatories
• Multi-band Extension of the Wideband Timing Technique
• Gravitational Wave Probe of Primordial Black Hole Origin via Superradiance
• Improving the detection sensitivity to primordial stochastic gravitational waves with reduced astrophysical foregrounds. II. Subthreshold binary neutron stars
• Primordial black holes in SB SUSY Gauss-Bonnet inflation
• Radio and gamma-ray timing of TRAPUM L-band Fermi pulsar survey discoveries
• A Bayesian parameter estimation approach to pulsar time-of-arrival analysis
• Gravitational Wave Astronomy: Needle in a Haystack
• Gravitational-wave astronomy: Observational results and their impact
• Detection of eccentric close-binary supermassive black holes with incomplete interferometric data
• On the waveform of the scalar induced gravitational waves
• Optical ultra-stable optical clock cavities as resonant mass gravitational wave detectors in search for new physics
• Evolution of circumbinary accretion disk around supermassive binary black hole: post-Newtonian hydrodynamics versus Newtonian hydrodynamics
• The impact of a stochastic gravitational-wave background on pulsar timing parameters
• Ultra-low-frequency gravitational waves from individual supermassive black hole binaries as standard sirens
• Measuring $H_0$ with pulsar timing arrays
• Electromagnetic signatures of far-field gravitational radiation in the 1+3 approach
• A Shining Death of Unequal Supermassive Black Hole Binaries
• The Host Galaxies of PTA Sources: Converting Supermassive BH Binary Parameters into EM Observables
• Resolving Individual Signals in the Presence of Stochastic Background in Future Pulsar Timing Arrays
• The Pulsar Search Collaboratory: Expanding Nationwide
• History of Astronomy in Australia: Big-Impact Astronomy from World War II until the Lunar Landing (1945-1969)
• Pulsar tests of the graviton mass
• Examination of orbital evolution and gravitational waves of OJ 287 in the 4PN order
• Effects of Coronal Mass Ejection on PSR J1022+1001 and Possible Mode Change of PSR J2145-0750 in the InPTA DR2
• Astrophysical black holes
• Robust parameter estimation from pulsar timing data
• Gravitational wave science with laser interferometers and pulsar timing
• Derivative of the light frequency shift as a measure of spacetime curvature for gravitational wave detection
• Probing the mass relation between supermassive black holes and dark matter halos at high redshifts by gravitational wave experiments
• A nontrivial footprint of standard cosmology in the future observations of low-frequency gravitational waves
• Gravitational wave signals from long lasting binary-single black hole encounters
• Sound Speed Resonance of Gravitational Waves in Gauss-Bonnet-coupled inflation
• Shedding Light on Dark Sectors with Gravitational Waves
• Simulations of helical inflationary magnetogenesis and gravitational waves
• Geodesic Noise and Gravitational Wave Observations by Pulsar Timing Arrays
• Improving DM estimates using low-frequency scattering-broadening estimates
• The Role of r-Modes in Pulsar Spin-down, Pulsar Timing, and Gravitational Waves
• Tunable compression of template banks for fast gravitational-wave detection and localisation
• Pulsars are cool. Seriously
• Gravitational waves in massive Horndeski theory with a potential
• The scientific potential of space-based gravitational wave detectors
• Imprints of an early matter-dominated era arising from dark matter dilution mechanism on cosmic string dynamics and gravitational wave signatures
• Collapsing domain walls with ${\mathbb{Z}}_2$-violating coupling to thermalized fermions and their impact on gravitational wave detections
• Primordial black holes and induced gravitational waves from localized features in DBI inflation
• Can Einstein (rings) surf Gravitational Waves?
• Probing Dark Matter Clumps, Strings and Domain Walls with Gravitational Wave Detectors
• Dynamical friction and massive black hole orbits: analytical predictions and numerical solutions
• Geometrical Aspects on Parameter estimation of stochastic gravitational wave background: beyond the Fisher analysis
• First-post-Newtonian generation of gravitational waves in Einstein-Cartan theory
• Gravitational lensing of pulsars as a probe of dark matter halos
• The role of longitudinal polarizations in Horndeski and macroscopic gravity: Introducing gravitational plasmas
• Quantum Physics in Space
• Pulsar timing residuals due to individual non-evolving gravitational wave sources
• Multimessenger Signatures of Tilted, Self-Gravitating, Black Hole Disks
• Graph-based Summary Statistics for Revealing the Stochastic Gravitational Wave Background in Pulsar Timing Arrays
• Gravitational Waves from Hyperbolic Encounters of Primordial Black Holes in Dwarf Galaxies
• Fast and Fewrious: Stochastic binary perturbations from fast compact objects
• Analysis of some classical and quantum aspects of black holes
• How gravitational waves change photon orbital angular momentum quantum states
• Aspects of astrophysical particle production and beyond the Standard Model phenomenology
• Searching for A Generic Gravitational Wave Background via Bayesian Nonparametric Analysis with Pulsar Timing Arrays
• A study of 10 Rotating Radio Transients using Parkes radio telescope
• Probing High Scale Dirac Leptogenesis via Gravitational Waves from Domain Walls