Searching for the nano-Hertz stochastic gravitational wave background with the Chinese Pulsar Timing Array Data Release I

Abstract

Observing and timing a group of millisecond pulsars (MSPs) with high rotational stability enables the direct detection of gravitational waves (GWs). The GW signals can be identified from the spatial correlations encoded in the times-of-arrival of widely spaced pulsar-pairs. The Chinese Pulsar Timing Array (CPTA) is a collaboration aiming at the direct GW detection with observations carried out using Chinese radio telescopes. This short article serves as a `table of contents' for a forthcoming series of papers related to the CPTA Data Release 1 (CPTA DR1) which uses observations from the Five-hundred-meter Aperture Spherical radio Telescope (FAST). Here, after summarizing the time span and accuracy of CPTA DR1, we report the key results of our statistical inference finding a correlated signal with amplitude $\log A_{\mathrm{c}}=-14.4{}_{-2.8}^{+1.0}$ for spectral index in the range of $\alpha \in [-1.8,1.5]$ assuming a GW background (GWB) induced quadrupolar correlation. The search for the Hellings-Downs (HD) correlation curve is also presented, where some evidence for the HD correlation has been found that a 4.6-$\sigma$ statistical significance is achieved using the discrete frequency method around the frequency of 14 nHz. We expect that the future International Pulsar Timing Array data analysis and the next CPTA data release will be more sensitive to the nHz GWB, which could verify the current results.

18 pages, 6 figures, submitted to "Research in astronomy and astrophysics" 22nd March 2022

References in corpus (14)

• TEMPO2, a new pulsar timing package. I: Overview
• PSRCHIVE and PSRFITS An Open Approach to Radio Pulsar Data Storage and Analysis
• The NANOGrav 12.5-year Data Set: Search For An Isotropic Stochastic Gravitational-Wave Background
• 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
• Common-red-signal analysis with 24-yr high-precision timing of the European Pulsar Timing Array: Inferences in the stochastic gravitational-wave background search
• A pulsar-based timescale from the International Pulsar Timing Array
• The MeerTime Pulsar Timing Array -- A Census of Emission Properties and Timing Potential
• Model-based asymptotically optimal dispersion measure correction for pulsar timing
• Noise analysis in the European Pulsar Timing Array data release 2 and its implications on the gravitational-wave background search
• Evaluating the prevalence of spurious correlations in pulsar timing array datasets
• Evidence for profile changes in PSR J1713+0747 using the uGMRT
• Consistency of the Parkes Pulsar Timing Array Signal with a Nanohertz Gravitational-wave Background
• Measuring clock jumps using pulsar timing

Cited by in corpus (497)

• The second data release from the European Pulsar Timing Array III. Search for gravitational wave signals
• Cosmological phase transitions: from perturbative particle physics to gravitational waves
• The recent gravitational wave observation by pulsar timing arrays and primordial black holes: the importance of non-gaussianities
• Inflationary interpretation of the stochastic gravitational wave background signal detected by pulsar timing array experiments
• Primordial gravitational waves in the nano-Hertz regime and PTA data -- towards solving the GW inverse problem
• Cosmological Background Interpretation of Pulsar Timing Array Data
• Probing the equation of state of the early Universe with pulsar timing arrays
• Limits on scalar-induced gravitational waves from the stochastic background by pulsar timing array observations
• Implications for the non-Gaussianity of curvature perturbation from pulsar timing arrays
• The Science of the Einstein Telescope
• The MeerKAT Pulsar Timing Array: The first search for gravitational waves with the MeerKAT radio telescope
• The Need For Speed: Rapid Refitting Techniques for Bayesian Spectral Characterization of the Gravitational Wave Background Using PTAs
• Primordial Black Holes from Supercooled Phase Transitions
• The nanohertz stochastic gravitational wave background from cosmic string loops and the abundant high redshift massive galaxies
• Have pulsar timing array methods detected a cosmological phase transition?
• Gravitational Waves from SMBH Binaries in Light of the NANOGrav 15-Year Data
• The Detected Stochastic Gravitational Waves and Subsolar-Mass Primordial Black Holes
• Implications for the Supermassive Black Hole Binaries from the NANOGrav 15-year Data Set
• Implications of Pulsar Timing Array Data for Scalar-Induced Gravitational Waves and Primordial Black Holes: Primordial Non-Gaussianity $f_{\mathrm{NL}}$ Considered
• Superheavy quasi-stable strings and walls bounded by strings in the light of NANOGrav 15 year data
• Nano-Hertz gravitational waves from collapsing domain walls associated with freeze-in dark matter in light of pulsar timing array observations
• Scalar induced gravitational waves in light of Pulsar Timing Array data
• Gravitational waves from first-order phase transitions in LISA: reconstruction pipeline and physics interpretation
• Supercooling in Radiative Symmetry Breaking: Theory Extensions, Gravitational Wave Detection and Primordial Black Holes
• Hellings and Downs correlation of an arbitrary set of pulsars
• Can supercooled phase transitions explain the gravitational wave background observed by pulsar timing arrays?
• QCD-Collapsed Domain Walls: QCD Phase Transition and Gravitational Wave Spectroscopy
• Constraints on primordial curvature power spectrum with pulsar timing arrays
• Confronting sound speed resonance with pulsar timing arrays
• The neutron star mass, distance, and inclination from precision timing of the brilliant millisecond pulsar J0437$-$4715
• Translating nano-Hertz gravitational wave background into primordial perturbations taking account of the cosmological QCD phase transition
• Gravitational Wave Astronomy With TianQin
• NANOGrav spectral index $\gamma =3$ from melting domain walls
• Cosmological Interpretation for the Stochastic Signal in Pulsar Timing Arrays
• Primordial Non-Gaussianity $f_{\mathrm{NL}}$ and Anisotropies in Scalar-Induced Gravitational Waves
• Implications of Nano-Hertz Gravitational Waves on Electroweak Phase Transition in the Singlet Dark Matter Model
• Did we hear the sound of the Universe boiling? Analysis using the full fluid velocity profiles and NANOGrav 15-year data
• Curbing PBHs with PTAs
• Inflationary Butterfly Effect: Non-perturbative Dynamics From Small-Scale Features
• Detection of astrophysical gravitational wave sources by TianQin and LISA
• Asymptotic tails of massive gravitons in light of pulsar timing array observations
• Constraints on primordial black holes from LIGO-Virgo-KAGRA O3 events
• Induced Gravitational Wave interpretation of PTA data: a complete study for general equation of state
• Mirror QCD phase transition as the origin of the nanohertz Stochastic Gravitational-Wave Background
• Simultaneously probing the sound speed and equation of state of the early Universe with pulsar timing arrays
• Single field inflation in the light of Pulsar Timing Array Data: Quintessential interpretation of blue tilted tensor spectrum through Non-Bunch Davies initial condition
• Model-independent reconstruction of the primordial curvature power spectrum from PTA data
• Broken blue-tilted inflationary gravitational waves: a joint analysis of NANOGrav 15-year and BICEP/Keck 2018 data
• The MeerKAT Pulsar Timing Array: The $4.5$-year data release and the noise and stochastic signals of the millisecond pulsar population
• Scalar induced gravity waves from ultra slow-roll Galileon inflation
• NANOGrav signal from axion inflation
• Constraints On Scalar-Induced Gravitational Waves Up To Third Order From Joint Analysis of BBN, CMB, And PTA Data
• Gravitational Waves and Primordial Black Hole Productions from Gluodynamics by Holography
• Enhancement of primordial curvature perturbations in $R^3$-corrected Starobinsky-Higgs inflation
• Probing The Early Universe Cosmology With NANOGrav: Possibilities and Limitations
• Exploring the NANOGrav Signal and Planet-mass Primordial Black Holes through Higgs Inflation
• Nonlinear quasinormal mode detectability with next-generation gravitational wave detectors
• The separate-universe approach and sudden transitions during inflation
• Long-term Evolution of Binary Orbits Induced by Circumbinary Disks
• Ultra-low mass PBHs in the early universe can explain the PTA signal
• Probing the speed of scalar-induced gravitational waves with pulsar timing arrays
• Unveiling the merger structure of black hole binaries in generic planar orbits
• Primordial non-Gaussianity as a saviour for PBH overproduction in SIGWs generated by Pulsar Timing Arrays for Galileon inflation
• Gravitational waves induced by scalar-tensor mixing
• Fingerprint of GeV scale right-handed neutrinos on inflationary gravitational waves and PTA data
• Complete analysis of the background and anisotropies of scalar-induced gravitational waves: primordial non-Gaussianity $f_{\mathrm{NL}}$ and $g_{\mathrm{NL}}$ considered
• Pulsar timing array observations as possible hints for nonsingular cosmology
• Realisation of the ultra-slow roll phase in Galileon inflation and PBH overproduction
• Neutron stars and the dense matter equation of state: from microscopic theory to macroscopic observations
• Challenges and Opportunities of Gravitational Wave Searches above 10 kHz
• Can the gravitational wave background feel wiggles in spacetime?
• Enhanced Curvature Perturbation and Primordial Black Hole Formation in Two-stage Inflation with a break
• Answers to frequently asked questions about the pulsar timing array Hellings and Downs curve
• Towards distinguishing Dirac from Majorana neutrino mass with gravitational waves
• Limits on planetary-mass primordial black holes from the OGLE high-cadence survey of the Magellanic Clouds
• NANOGrav hints for first-order confinement-deconfinement phase transition in different QCD-matter scenarios
• Inflation, superheavy metastable strings and gravitational waves in non-supersymmetric flipped SU(5)
• Bounds on Ultralight Dark Matter from NANOGrav
• Pulsar Timing Arrays and Primordial Black Holes from a Supercooled Phase Transition
• From quantum gravity to gravitational waves through cosmic strings
• Practical approaches to analyzing PTA data: Cosmic strings with six pulsars
• Heavy QCD axion model in light of pulsar timing arrays
• Large fluctuations and Primordial Black Holes
• Criterion for ultra-fast bubble walls: the impact of hydrodynamic obstruction
• Hunting the stochastic gravitational wave background in pulsar timing array cross correlations through theoretical uncertainty
• Primordial black holes and induced gravitational waves from logarithmic non-Gaussianity
• Testing Realistic $SO(10)$ SUSY GUTs with Proton Decay and Gravitational Waves
• Implications of the pulsar timing array detections for massive black hole mergers in the LISA band
• Logarithmically divergent friction on ultrarelativistic bubble walls
• Enhancement of gravitational waves at Q-ball decay including non-linear density perturbations
• Gravitational Wave Emission from a Cosmic String Loop, I: Global Case
• Search for Non-Tensorial Gravitational-Wave Backgrounds in the NANOGrav 15-Year Data Set
• Null energy condition violation during inflation and pulsar timing array observations
• Fuzzy Dark Matter and the Dark Dimension
• Probing Stochastic Gravitational Wave Background from $SU(5)\times U(1{)}_{\chi }$ Strings in Light of NANOGrav 15-Year Data
• Dissecting the Stochastic Gravitational Wave Background with Astrometry
• Gravitational wave emission from metastable current-carrying strings in $E_6$
• The FAST Galactic Plane Pulsar Snapshot survey: VIII. 116 binary pulsars
• Induced Gravitational Waves probing Primordial Black Hole Dark Matter with Memory Burden
• Constraining the Graviton Mass with the NANOGrav 15-Year Data Set
• Revisiting evolution of domain walls and their gravitational radiation with CosmoLattice
• Searching for Heavy Leptophilic $Z^{\prime }$: from Lepton Colliders to Gravitational Waves
• Primordial magnetic field as a common solution of nanohertz gravitational waves and the Hubble tension
• Unraveling the early universe's equation of state and primordial black hole production with PTA, BBN, and CMB observations
• LiteBIRD Science Goals and Forecasts. A Case Study of the Origin of Primordial Gravitational Waves using Large-Scale CMB Polarization
• Constraints on holographic QCD phase transitions from PTA observations
• Eccentric Binaries in Retrograde Disks
• Spectral Variance in a Stochastic Gravitational-Wave Background From a Binary Population
• Emission signatures from sub-pc Post-Newtonian binaries embedded in circumbinary discs
• Obviating PBH overproduction for SIGWs generated by Pulsar Timing Arrays in loop corrected EFT of bounce
• Near Real-Time Gravitational Wave Data Analysis of the Massive Black Hole Binary with TianQin
• Testing gravity with cosmic variance-limited pulsar timing array correlations
• PulsarX: a new pulsar searching package -I. A high performance folding program for pulsar surveys
• Implications of cosmologically coupled black holes for pulsar timing arrays
• Gravitational waves from walls bounded by strings in $SO(10)$ model of pseudo-Goldstone dark matter
• Flipped SU(5): unification, proton decay, fermion masses and gravitational waves
• Status Report on Global Pulsar-Timing-Array Efforts to Detect Gravitational Waves
• Constraints on the velocity of gravitational waves from NANOGrav 15-year data set
• Prospects for Taiji to detect a gravitational-wave background from cosmic strings
• Quest for CMB spectral distortions to probe the scalar-induced gravitational wave background interpretation of pulsar timing array data
• Anisotropies in Scalar-Induced Gravitational-Wave Background from Inflaton-Curvaton Mixed Scenario with Sound Speed Resonance
• Revised bounds on local cosmic strings from NANOGrav observations
• Source anisotropies and pulsar timing arrays
• The NANOGrav 15 yr Data Set: Looking for Signs of Discreteness in the Gravitational-wave Background
• Identifying Host Galaxies of Supermassive Black Hole Binaries Found by PTAs
• Astrophysical neutrino oscillations after pulsar timing array analyses
• The MeerKAT Pulsar Timing Array: Maps of the gravitational-wave sky with the 4.5 year data release
• Slaying Axion-Like Particles via Gravitational Waves and Primordial Black Holes from Supercooled Phase Transition
• Periodic Gamma-ray Modulation of the blazar PG 1553+113 Confirmed by Fermi-LAT and Multi-wavelength Observations
• Induced gravitational waves: the effect of first order tensor perturbations
• A weakly-parametric approach to stochastic background inference in LISA
• Pulsar Timing Arrays require hierarchical models
• PeV-Scale SUSY and Cosmic Strings from F-term Hybrid Inflation
• How to Detect an Astrophysical Nanohertz Gravitational-Wave Background
• Gravitational Wave Sourced by Decay of Massive Particle from Primordial Black Hole evaporation
• Impact of memory-burdened black holes on primordial gravitational waves in light of Pulsar Timing Array
• Eccentric Minidisks in Accreting Binaries
• RABBITS -- I. The crucial role of nuclear star formation in driving the coalescence of supermassive black hole binaries
• Pulsar timing array source ensembles
• The NANOGrav 12.5-year data set: A computationally efficient eccentric binary search pipeline and constraints on an eccentric supermassive binary candidate in 3C 66B
• Pulsar Timing Array Harmonic Analysis and Source Angular Correlations
• Double-graviton production from Standard Model plasma
• Spatial and Spectral Characterization of the Gravitational-wave Background with the PTA Optimal Statistic
• Eccentricity effects on the supermassive black hole gravitational wave background
• Probing the Merger Rates of Supermassive Black Holes and Galaxies with Gravitational Waves
• Correlations for an anisotropic polarized stochastic gravitational wave background in pulsar timing arrays
• Revisiting Metastable Cosmic String Breaking
• Can we distinguish the adiabatic fluctuations and isocurvature fluctuations with pulsar timing arrays?
• Primordial black holes: constraints, potential evidence and prospects
• Gravitational wave and particle emission from a cosmic string loop: local case
• Charting the Nanohertz Gravitational Wave Sky with Pulsar Timing Arrays
• Regularized-Renormalized-Resummed loop corrected power spectrum of non-singular bounce with Primordial Black Hole formation
• Tensor Perturbations from Bounce Inflation Scenario in f(Q) Gravity
• Induced Domain Walls of QCD Axion, and Gravitational Waves
• Tomography of flavoured leptogenesis with primordial blue gravitational waves
• Toward robust detections of nanohertz gravitational waves
• A geometric template bank for the detection of spinning low-mass compact binaries with moderate orbital eccentricity
• Posterior predictive checking for gravitational-wave detection with pulsar timing arrays: I. The optimal statistic
• Optimal reconstruction of the Hellings and Downs correlation
• Harmonic analysis for pulsar timing arrays
• Bubbletrons: Ultrahigh-Energy Particle Collisions and Heavy Dark Matter at Phase Transitions
• A nonperturbative test of nucleation calculations for strong phase transitions
• Improving the Cosmological Constraints by Inferring the Formation Channel of Extreme-mass-ratio Inspirals
• Measuring kinematic anisotropies with pulsar timing arrays
• Scalar induced gravitational waves in metric teleparallel gravity with the Nieh-Yan term
• The Impact of Spin in Compact Binary Foreground Subtraction for Estimating the Residual Stochastic Gravitational-wave Background in Ground-based Detectors
• Unveiling the Graviton Mass Bounds through Analysis of 2023 Pulsar Timing Array Data Releases
• Angular bispectrum and trispectrum of scalar-induced gravitational waves: all contributions from primordial non-Gaussianity $f_{\mathrm{NL}}$ and $g_{\mathrm{NL}}$
• The FAST Galactic Plane Pulsar Snapshot Survey: III. Timing results of 30 FAST-GPPS discovered pulsars
• Testing strengths, limitations and biases of current Pulsar Timing Arrays detection analyses on realistic data
• Probing Parity Violation in the Stochastic Gravitational Wave Background with Astrometry
• Towards a Consistent Calculation of the Lunar Response to Gravitational Waves
• Search for high-frequency gravitational waves with Rydberg atoms
• Untangling PBH overproduction in $w$-SIGWs generated by Pulsar Timing Arrays for MST-EFT of single field inflation
• Topological structures, dark matter and gravitational waves in $E_6$
• Quantum tunneling in the early universe: Stable magnetic monopoles from metastable cosmic strings
• Constraints on conformal ultralight dark matter couplings from the European Pulsar Timing Array
• Gravitational Wave Displacement and Velocity Memory Effects
• Gravitational waves from low-scale cosmic strings
• On the behaviour of eccentric sub-pc massive black hole binaries embedded in massive discs
• Exploring the Capabilities of Gibbs Sampling in Pulsar Timing Arrays
• Bayesian evidence estimation from posterior samples with normalizing flows
• The Impact of Black Hole Scaling Relation Assumptions on the Mass Density of Black Holes
• Gravitational-wave background in bouncing models from semi-classical, quantum and string gravity
• Probing the Supersymmetry-Mass Scale With F-term Hybrid Inflation
• Implication of nano-Hertz stochastic gravitational wave background on ultralight axion particles
• Constraining the history of reheating with the NANOGrav 15-year data
• Parametric resonance of gravitational waves in general scalar-tensor theories
• Stochastic gravitational wave background: birth from string-wall death
• Distinctive GWBs from eccentric inspiraling SMBH binaries with a DM spike
• Primordial Black Holes from Effective Field Theory of Stochastic Single Field Inflation at NNNLO
• Probing supermassive black hole seed scenarios with gravitational wave measurements
• Use Model Averaging instead of Model Selection in Pulsar Timing
• Stars or gas? Constraining the hardening processes of massive black-hole binaries with LISA
• Gravitational Waves from Phase Transitions
• Templated Anisotropic Analyses of the LISA Galactic Foreground
• Gravitational Wave Symphony from Oscillating Spectator Scalar Fields
• Probing Dark Sectors with Neutron Stars
• Fast Likelihood-free Reconstruction of Gravitational Wave Backgrounds
• f-mode oscillations of anisotropic neutron stars in full general relativity
• Constraining the impact of standard model phase transitions on primordial black holes
• Probing flavored regimes of leptogenesis with gravitational waves from cosmic strings
• Cyclostationary signals in LISA: a practical application to Milky Way satellites
• Ultra-Slow-Roll Inflation on the Lattice II: Nonperturbative Curvature Perturbation
• Precision of localization of single gravitational-wave source with pulsar timing array
• Superheavy Metastable Strings in SO(10)
• Classical (and Quantum) Heuristics for Gravitational Wave Detection
• Sub-GeV dark matter and nano-Hertz gravitational waves from a classically conformal dark sector
• General bubble expansion at strong coupling
• Kinetic Mixing, Proton Decay and Gravitational Waves in SO(10)
• The Spectrum of Gravitational Waves from Annihilating Domain Walls
• The impact of large-scale galaxy clustering on the variance of the Hellings-Downs correlation: theoretical framework
• Silk Damping in Scalar-Induced Gravitational Waves: A Novel Probe for New Physics
• Systematic errors in searches for nanohertz gravitational waves
• Cosmological Consequences of Domain Walls Biased by Quantum Gravity
• Searching for local features in primordial power spectrum using genetic algorithms
• Gravitational Wave Measurement in the Mid-Band with Atom Interferometers
• Constraints on Non-Gaussian primordial curvature perturbation from the LIGO-Virgo-KAGRA third observing run
• Identifying supermassive black hole recoil in elliptical galaxies
• Signals of merging supermassive primordial black holes in pulsar timing arrays
• Domain Wall Network: A Dual Solution for Gravitational Waves and Hubble Tension?
• Primordial Black Holes without fine-tuning from a light stochastic spectator field
• Separating deterministic and stochastic gravitational wave signals in realistic pulsar timing array datasets
• Gravitational effects on fluid dynamics in cosmological first-order phase transitions
• Cosmic variance of the Hellings and Downs correlation for ensembles of universes having nonzero angular power spectra
• Continuous gravitational waves from trapped magnetar ejecta and the connection to glitches and antiglitches
• Probing dark-matter effects with gravitational waves using the parameterized post-Einsteinian framework
• New limits on the local Lorentz invariance violation of gravity in the Standard-Model Extension with pulsars
• Thermal leptogenesis, dark matter, and gravitational waves from an extended canonical seesaw scenario
• Transition rate and gravitational wave spectrum from first-order QCD phase transitions
• Negative non-Gaussianity as a salvager for PBHs with PTAs in bounce
• Gravitational waves from cosmic superstrings and gauge strings
• Maximal GW amplitude from bubble collisions in supercooled phase transitions
• Irreducible cosmological backgrounds of a real scalar with a broken symmetry
• Fundamental Physics and Cosmology with TianQin
• Toward a test of Gaussianity of a gravitational wave background
• Scalar induced gravitational waves in chiral scalar-tensor theory of gravity
• The ASTRID Simulation at z=0: From Massive Black Holes to Large-scale Structure
• The effect of quantum decoherence on inflationary gravitational waves
• Muffled Murmurs: Environmental effects in the LISA stochastic signal from stellar-mass black hole binaries
• Gravitational Waves from Preheating in Inflation with Weyl Symmetry
• Polarization modes of gravitational waves in general Einstein-vector theory
• Constraining string cosmology with the gravitational-wave background using the NANOGrav 15-year data set
• Observational Evidence of a Centi-parsec Supermassive Black Hole Binary Existing in the Nearby Galaxy M81
• Radiation Magnetohydrodynamic Simulation of sub-Eddington Circumbinary Disk around an Equal-mass Massive Black Hole Binary
• Gravitational Waves from Metastable Cosmic Strings in Supersymmetric New Inflation Model
• Angular correlation and deformed Hellings-Downs curve from spin-2 ultralight dark matter
• Gravitational waves from cosmic strings in Froggatt-Nielsen flavour models
• Effects of dark boson mediated feeble interaction between dark matter (DM) and quark matter on $f$-mode oscillation of DM admixed quark stars
• Implications of Pulsar Timing Array Results for High Frequency Gravitational Waves
• Space-based optical lattice clocks as gravitational wave detectors in search for new physics
• Anisotropies of cosmological gravitational wave backgrounds in non-flat spacetime
• A novel probe of graviton dispersion relations at nano-Hertz frequencies
• Gravitational Waves from Massive Black Hole Mergers in ASTRID: Predictions for LISA
• Interpreting Pulsar Timing Array data of Gravitational Waves with Ekpyrosis-Bouncing Cosmology
• On the spin period distribution of millisecond pulsars
• Probing Reheating Phase via Non-Helical Magnetogenesis and Secondary Gravitational Waves
• Unveiling the solution to the final-parsec problem by combining milli-Hertz gravitational-wave observation and AGN survey
• Primordial Black-Hole-Based Pathways to Little Red Dots
• Efficient Bayesian inference and model selection for continuous gravitational waves in pulsar timing array data
• Detecting a Gravitational-Wave Background from Inflation with Null Energy Condition Violation: Prospects for Taiji
• High priority targets for transient gravitational waves from glitching pulsars
• Posterior predictive checking for gravitational-wave detection with pulsar timing arrays: II. Posterior predictive distributions and pseudo Bayes factors
• Extracting parity-violating gravitational waves from projected tidal force tensor in three dimensions
• The TRAPUM Large Magellanic Cloud pulsar survey with MeerKAT I: Survey setup and first seven pulsar discoveries
• Constraints on the Pre-Big Bang scenario from a cosmological interpretation of the NANOGrav data
• (Multi-field) Natural Inflation and Gravitational Waves
• Measuring the anisotropies in astrophysical and cosmological gravitational-wave backgrounds with Taiji and LISA networks
• The Chinese Pulsar Timing Array data release I. Single pulsar noise analysis
• Dark Photon Dark Matter and Low-Frequency Gravitational Wave Detection with Gaia-like Astrometry
• Exact model of gravitational wave and pure radiation
• The primordial black holes solution to the cosmological monopole problem
• Cosmic superstrings in large volume compactifications: PTAs, LISA and time-varying tension
• What is the origin of the JWST SMBHs?
• Reducing instrumental errors in Parkes Pulsar Timing Array data
• Ladder top-quark condensation imprints in supercooled electroweak phase transition
• Interplay between the muon $g-2$ anomaly and the PTA nHZ gravitational waves from domain walls in next-to minimal supersymmetric standard model
• Supercooled phase transitions in conformal dark sectors explain NANOGrav data
• Gravitational waves from cosmic strings for pedestrians
• Choosing suitable noise models for nanohertz gravitational-wave astrophysics
• Memory of a Random Walk: Astrometric deflections from gravitational wave memory accumulation over cosmological scales
• Measuring anisotropies in the PTA band with cross-correlations
• Reading signatures of supermassive binary black holes in pulsar timing array observations
• Scalar-Induced Gravitational Waves in Modified Gravity
• Extended mass distribution of PBHs during QCD phase transition: SGWB and mini-EMRIs
• Dark Matter Spike surrounding Supermassive Black Holes Binary and the Nanohertz Stochastic Gravitational Wave Background
• The NANOGrav 12.5-Year Data Set: Probing Interstellar Turbulence and Precision Pulsar Timing with PSR J1903+0327
• Realistic consecutive galaxy mergers form eccentric PTA sources
• Regularizing the Pulsar Timing Array likelihood: A path towards Fourier Space
• Astrometry meets Pulsar Timing Arrays: Synergies for Gravitational Wave Detection
• Prospects for Time-Domain and Multi-Messenger Science with eXTP
• Impact of the observation frequency coverage on the significance of a gravitational wave background detection in PTA data
• Gravitational waves from supercooled phase transitions in conformal Majoron models of neutrino mass
• Implications for Pulsar Timing Arrays of Sub-solar Black Hole Detections: From LVK to Einstein Telescope and Cosmic Explorer
• Hot, cold, and multi-component accretion flows around supermassive black hole binaries
• Gravitational wave signals from primordial black holes orbiting solar-type stars
• Premature supermassive black hole mergers in cosmological simulations of structure formation
• Probing intermediate-mass black hole binaries with the Lunar Gravitational-wave Antenna
• Mitigating cosmic variance in the Hellings-Downs curve: a Cosmic Microwave Background analogy
• Signatures of Massive Black Hole Merger Host Galaxies from Cosmological Simulations II: Unique Stellar Kinematics in Integral Field Unit Spectroscopy
• Forecast Analysis of Astrophysical Stochastic Gravitational Wave Background beyond general relativity: A Case Study on Brans-Dicke Gravity
• Exploring pulsar timing precision: A comparative study of polarization calibration methods for NANOGrav data from the Green Bank Telescope
• Primordial Black Holes and Gravitational Waves in the $U(1{)}_{B-L}$ Extended Inert Doublet Model: A First-Order Phase Transition Perspective
• Parity-violating primordial gravitational waves from null energy condition violation
• Accretion mediated spin-eccentricity correlations in LISA massive black hole binaries
• Non-Gaussianities and Primordial Black Holes
• The LISA forecast on a smooth crossover beyond the Standard Model through the scalar-induced gravitational waves
• Climbing over the potential barrier during inflation via null energy condition violation
• Improving the detection sensitivity to primordial stochastic gravitational waves with reduced astrophysical foregrounds. II. Subthreshold binary neutron stars
• Relic Gravitational Waves from the Chiral Plasma Instability in the Standard Cosmological Model
• Pulsar timing and polarimetry: results and perspectives
• Probing Spin-2 Ultralight Dark Matter with Space-based Gravitational Wave Detectors in the mHz Regime
• Reconstructing the LISA massive black hole binary population via iterative kernel density estimation
• Inferring Mbh-Mbulge Evolution from the Gravitational Wave Background
• On the anisotropies of the cosmological gravitational-wave background from pulsar timing array observations
• Gravitational waves from axion inflation in the gradient expansion formalism. Part I. Pure axion inflation
• Reconciling PTA and JWST and preparing for LISA with POMPOCO: a Parametrisation Of the Massive black hole POpulation for Comparison to Observations
• Polarization Properties of the Electromagnetic Response to High-frequency Gravitational Wave
• Searching for Anisotropy in the Gravitational Wave Background Using the Parkes Pulsar Timing Array
• Multimodality in the Search for New Physics in Pulsar Timing Data and the Case of Kination-amplified Gravitational-wave Background from Inflation
• Gravitational wave footprints from Higgs-portal scalegenesis with multiple dark chiral scalars
• Unveiling the existence of nontensorial gravitational-wave polarizations from individual supermassive black hole binaries with pulsar timing arrays
• Primordial black holes save $R^2$ inflation
• The impact of large-scale galaxy clustering on the variance of the Hellings-Downs correlation: numerical results
• Gravitational waves from vacuum bubbles: Ultraviolet dependence on wall thickness
• Gravitational Waves from Primordial Black Hole Dark Matter Spikes
• The NANOGrav 15 yr data set: Posterior predictive checks for gravitational-wave detection with pulsar timing arrays
• Spin-Flavor Oscillations of Relic Neutrinos in Primordial Magnetic Field
• Chiral Gravitational Wave Background from Audible Axion via Nieh-Yan Term
• Constraining inflation with nonminimal derivative coupling with the Parkes Pulsar Timing Array third data release
• Optical ultra-stable optical clock cavities as resonant mass gravitational wave detectors in search for new physics
• Cosmology on a Gravitational Wave Background
• Cosmic Strings from Tribrid Inflation
• Acquiring the Lefschetz thimbles: efficient evaluation of the diffraction integral for lensing in wave optics
• Exploring the multiband gravitational wave background with a semi-analytic galaxy formation model
• Pulsar Polarization Array Limits on Ultralight Axion-like Dark Matter
• Prospects for cosmological research with the FAST array: 21-cm intensity mapping survey observation strategies
• Dynamical Lensing Tomography of Black Hole Ringdown
• Electromagnetic field in a cavity induced by gravitational waves
• Ultra-low-frequency gravitational waves from individual supermassive black hole binaries as standard sirens
• Can asteroid-mass PBHDM be compatible with catalyzed phase transition interpretation of PTA?
• Non-Abelian Domain Walls and Gravitational Waves
• Propagation and lensing of gravitational waves in Palatini $f(\hat{R})$ gravity
• Gravitational-wave effects in the most general vector-tensor theory
• Gravitational wave background from primordial black holes in globular clusters
• Relic gravitons and non-stationary processes
• DeepSSM: an emulator of gravitational wave spectra from sound waves during cosmological first-order phase transitions
• Detectability of dark matter density distribution via gravitational waves from binary black holes in the Galactic center
• Log-periodic gravitational-wave background beyond Einstein gravity
• Variability, polarimetry, and timing properties of single pulses from PSR J2222-0137 using FAST
• Accelerating LISA inference with Gaussian processes
• Realistic assessment of a single gravitational wave source localization taking into account precise pulsar distances with pulsar timing arrays
• First astrometric constraints on parity-violation in the gravitational wave background
• Detecting the heterodyning of gravitational waves
• Resolving Individual Signals in the Presence of Stochastic Background in Future Pulsar Timing Arrays
• Inflation, Proton Decay and Gravitational Waves from Metastable Strings in $SU(4{)}_C\times SU(2{)}_L\times U(1{)}_R$ Model
• The Host Galaxies of PTA Sources: Converting Supermassive BH Binary Parameters into EM Observables
• Supersymmetric hybrid inflation and current-carrying metastable cosmic strings in $SU(4{)}_c\times SU(2{)}_L\times U(1{)}_R$
• Waveform models for the gravitational-wave memory effect: Extreme mass-ratio limit and final memory offset
• Anisotropy of Nanohertz Gravitational Wave Background and Source Clustering from Supermassive Binary Black Holes Based on Cosmological Simulation
• Constraints on the Sharpness of the Curvature Power Spectrum
• Connecting Inflation to the NANOGrav 15-year Data Set via Massive Gravity
• Detecting gravitational waves with light
• Reconstructing inflationary potential from NANOGrav 15-year Data: A robust study using Non-Bunch Davies initial condition
• Exploring the Orbital Alignments of Galactic Close White Dwarf Binaries with LISA
• The Gravitational Wave Bias Parameter from Angular Power Spectra: Bridging Between Galaxies and Binary Black Holes
• Probing the mass relation between supermassive black holes and dark matter halos at high redshifts by gravitational wave experiments
• Primary gravitational waves at high frequencies I: Origin of suppression in the power spectrum
• Enhancement of small-scale induced gravitational waves from the soliton/oscillon domination
• Tensor bispectrum mediated by an excited scalar field during inflation
• Effects of Coronal Mass Ejection on PSR J1022+1001 and Possible Mode Change of PSR J2145-0750 in the InPTA DR2
• A narrow-band parameterization for the stochastic gravitational wave background
• Constraints on ultra-slow-roll inflation with the NANOGrav 15-Year Dataset
• Confronting primordial black holes with LIGO-Virgo-KAGRA and the Einstein Telescope
• Testing quantum gravity with primordial gravitational waves
• Lensing point-spread function of coherent astrophysical sources and non-trivial wave effects
• Efficient prescription to search for linear gravitational wave memory from hyperbolic black hole encounters and its application to the NANOGrav 12.5-year dataset
• In Search of the Biggest Bangs since the Big Bang
• Hybrid inflation and gravitational waves from accidentally light scalars
• Is PSR J0514$-$4002E in a PBH-NS binary?
• Search for the non-linearities of gravitational wave background in NANOGrav 15-year data set
• Bubbles kick off primordial black holes to form more binaries
• Cosmological scaling of precursor domain walls
• Multi-messenger Astronomy with Quenched Superradiance
• Hemisphere-averaged Hellings-Downs curve between pulsar pairs for a gravitational wave source
• Accurate pulsar timing array residual variances and correlation of the stochastic gravitational wave background
• Signal-to-noise Ratio Analytic Formulae of the Inspiral Binary Black Holes in TianQin
• Analysis of the Gravitational Wave Background Using Gamma-Ray Pulsar Timing Arrays with Next-Generation Detectors
• Scalar-induced gravitational wave from domain wall perturbation
• Exploring the anisotropic gravitational wave background from all-sky mock gravitational wave event catalogues
• Rapid inference for individual binaries and a stochastic background with pulsar timing array data
• Gravitational wave and dark matter from Axion-Higgs string
• Theoretical Radio Signals from Radio-Band Gravitational Waves Converted from the Neutron Star Magnetic Field
• Fundamental quantum limits for detecting ultrahigh frequency gravitational waves
• Improving DM estimates using low-frequency scattering-broadening estimates
• Non-Gaussianity of Tensor Induced Density Perturbations
• Can a time evolving, asymmetric broad line region mimic a massive black hole binary?
• Probing supermassive black hole scalarization with Pulsar Timing Arrays
• Implications of pulsar timing arrays for Gauss-Bonnet Inflation
• Lorentz Violation with Gravitational Waves: Constraints from NANOGrav and IPTA Data
• Magnetogenesis from Sawtooth Coupling: Gravitational Wave Probe of Reheating
• Black holes as telescopes: Discovering supermassive binaries through quasi-periodic lensed starlight
• Self-Interacting Dark-Matter Spikes and the Final-Parsec Problem: Bayesian constraints from the NANOGrav 15-Year Gravitational-Wave Background
• Signature of polarized ultralight vector dark matter in pulsar timing arrays
• Scalar-induced gravitational waves in spatially covariant gravity
• Gravitational waves from axion inflation in the gradient expansion formalism. Part II. Fermionic axion inflation
• Scalar-induced gravitational waves including isocurvature perturbations with lattice simulations
• Finite Populations & Finite Time: The Non-Gaussianity of a Gravitational Wave Background
• The Indian Pulsar Timing Array Data Release 2: II. Customised Single-Pulsar Noise Analysis and Noise Budget
• Perturbative limits on axion-SU(2) gauge dynamics during inflation from the energy density of spin-2 particles
• How large are curvature perturbations from slow first-order phase transitions? A gauge-invariant analysis
• An updated constraint for the Gravitational Wave Background from the Gamma-ray Pulsar Timing Array
• Searching for continuous gravitational waves in the Parkes Pulsar Timing Array Data Release 3
• Detecting milli-Hz gravitational waves with optical resonators
• Searching for supermassive black holes binaries within SRG/eROSITA-De I: Properties of the X-ray selected candidates
• Long-term Timing Results of Ecliptic Pulsars Observed with I-LOFAR
• Insights into Supermassive Black Hole Mergers from the Gravitational Wave Background
• Identifying the Quadrupolar Nature of Gravitational Wave Background through Space-based Missions
• LISA and $\gamma$-ray telescopes as multi-messenger probes of a first-order cosmological phase transition
• Reheating after the Supercooled Phase Transitions with Radiative Symmetry Breaking
• From $U(1)\times U(1)$ Symmetry Breaking to Majoron Cosmology: Insights from NANOGrav 15-year Data
• Prospects for joint multiband detection of intermediate-mass black holes by LGWA and the Einstein Telescope
• General Fourier expansion of post-Newtonian binary dynamics based on a quasi-Keplerian framework
• Collapsing domain walls with ${\mathbb{Z}}_2$-violating coupling to thermalized fermions and their impact on gravitational wave detections
• Modeling the Beam of Gravitational Radiation from a Cosmic String Loop
• Estimating the gravitational wave background anisotropy: a Bayesian approach boosted by cross-correlation angular power spectrum
• Supermassive black hole formation in the initial collapse of axion dark matter
• Comprehensive analysis of dissipative effects in the induced gravitational waves
• Inflationary gravitational wave background as a tail effect
• Quantum sensing of high-frequency gravitational waves with ion crystals
• Observable Gravitational Wave Strain at Second Order
• Black hole merger rates for LISA and LGWA from semi-analytical modelling of light seeds
• Gravitational waves from dark domain walls
• High-Redshift Merger Model for Low-Frequency Gravitational Wave Background
• Spontaneous baryogenesis and generation of gravitational waves in a new model of quintessential $\alpha$-attractor
• Stochastic gravitational wave background anisotropies from inflation with non-Bunch-Davies states
• Searching for unresolved massive black hole pairs through AGN photometric variability
• Gravitational Lensing of Gravitational Waves from Astrophysical Sources: Theory, Detection, and Applications
• The NANOGrav 15 yr Data Set: Customized Chromatic Noise Models
• Multiwavelength identification of millisecond pulsar candidates in the Galactic bulge
• Eikonal gravitational-wave lensing in Einstein-aether theory
• Primordial Black Holes from Spatially Varying Cosmological Constant Induced by Field Fluctuations in Extra Dimensions
• Postsphaleron darkogenesis
• Multi-wavelength properties of $z\gtrsim 6$ LISA detectable events
• SageNet: Fast Neural Network Emulation of the Stiff-amplified Gravitational Waves from Inflation
• First Light And Reionization Epoch Simulations (FLARES) -- XIX: Supermassive black hole mergers in the early Universe and their environmental dependence
• Supercooled Audible Axions
• The impact of outliers on pulsar timing arrays
• Detectability of massive binary black holes with sub-mHz gravitational wave missions
• On the calculation of p-values for quadratic statistics in Pulsar Timing Arrays
• Cylindrical Gravitational Waves in Einstein-Aether Theory
• Gravitational Waves and Primordial Black Holes produced by Dark Meta Stable Vacuum Decay
• Upper limits on microhertz gravitational waves from supermassive black-hole binaries using PSR J1909-3744 data from the second IPTA data release
• The Dark Side of the Moon: Listening to Scalar-Induced Gravitational Waves
• Circularly polarized gravitational waves from parity-violating scalar-tensor theory
• Linear perturbations of an exact gravitational wave in the Bianchi IV universe
• Detection of the stochastic gravitational wave background with the space-borne gravitational-wave detector network
• Scalar-Induced Gravitational Waves in Palatini $f(R)$ Gravity
• Gravitational Wave Measurement of the $M_{\mathrm{BH}}$-$M_{\mathrm{bulge}}$ Intrinsic Scatter at High Redshift
• Secondary gravitational waves against a strong gravitational wave in the Bianchi VI universe
• Extending the micro-Hertz detection horizons via orbital resonance effect for geocentric gravitational wave antennas
• Purely quadratic non-Gaussianity from tachyonic instability: Primordial black holes and scalar-induced gravitational waves
• Hawking area law in quantum gravity
• Pulsar scintillation studies with LOFAR III. Annual variations in PSR~J0814$+$7429
• Bayesian leave-one-out cross-validation for astrophysical model comparison using gravitational-wave background data
• Model-agnostic gravitational-wave background characterization algorithm
• Evaluating statistical significance for massive black hole binary mergers with space-based gravitational wave detectors
• Distinguishing gravity theories with networks of space-based gravitational-wave detectors
• Gravitational-wave standard sirens and application in cosmology
• Measuring black hole spin through gravitational lensing of pulsars
• Full analytic expressions of overlap reduction functions for anisotropies of the stochastic gravitational-wave background with pulsar timing arrays
• Repulsive quantum gravitoelectric-gravitomagnetic interaction
• Can we hear beats with pulsar timing arrays?
• Time-dependent deflection reconstruction: new technique to search for gravitational waves with the cosmic microwave background
• Spin and flavor oscillations of neutrinos in gravitational fields
• A Population Study for Searching Supermassive Binary Black Holes in Active Galactic Nuclei: Continuum Spectral Features and Periodic Variabilities
• Stochastic gravitational wave background due to core collapse resulting in neutron stars
• Flattened bispectrum of the scalar-induced gravitational waves
• Measuring the crust-superfluid coupling time-scale for 105 UTMOST pulsars with a Kalman filter
• Charged spherically symmetric black holes in the Lyra geometry and a preliminary investigation on the overcharging process
• Pulsar timing array analysis in a Legendre polynomial basis
• Assessing the performance of future space-based detectors: Astrophysical foregrounds and individual sources
• Gravitational lensing of gravitational waves: universal characteristics of strongly lensed memory waveforms
• Bispectrum of induced gravitational waves in the poltergeist mechanism
• Superconducting Strings in $E_6$
• Searching Stochastic Gravitational Wave Background Landscape Across Frequency Bands
• Measuring the speed of scalar induced gravitational waves from observations
• Novel Solar System Probes for Primordial Black Holes
• Testing No slip model with pulsar timing arrays: NANOGrav and IPTA
• Gravitational Wave Mountains: current-carrying domain walls
• Spatial Correlation between Pulsars from Interfering Gravitational-Wave Sources in Massive Gravity
• Applicability of multi-component study on Bayesian searches for targeted anisotropic stochastic gravitational-wave background
• A simple example of "non-minimal" Pre-Big Bang scenario
• Pulsars identified in the LOFAR Two-metre Sky Survey at 144 MHz
• Initial acquisition requirements for optical cavities in the space gravitational wave antennae DECIGO and B-DECIGO
• Rapid sinking and efficient mergers of supermassive black holes in compact high-redshift galaxies
• Ultralight scalar dark matter versus nonadiabatic perfect fluid dark matter in pulsar timing