Avi Vajpeyi
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  • Publications
    • Cosmological and High-Energy Physics Implications from Gravitational-Wave Background Searches in LIGO-Virgo-KAGRA’s O1–O4a Runs
    • Direct Multimodel Dark Matter Search with Gravitational-Wave Interferometers Using Data from the First Part of the Fourth LIGO-Virgo-KAGRA Observing Run
    • Variational Bayesian Inference for the Spectral Structure of LISA Noise
    • Bayesian P-spline recovery of stochastic gravitational-wave backgrounds in LISA
    • GWTC-4.0: Constraints on the Cosmic Expansion Rate and Modified Gravitational-wave Propagation
    • Bayesian nonparametric estimation of correlated gravitational wave detector network noise using matrix-gamma process priors
    • Search for planetary-mass ultracompact binaries using data from the first part of the LIGO–Virgo–KAGRA fourth observing run
    • Directional search for persistent gravitational waves: Results from the first part of LIGO-Virgo-KAGRA’s fourth observing run
    • Multivariate Bayesian P-spline estimation of spectral density matrices, with application to LISA TDI noise
    • GWTC-4.0: Population Properties of Merging Compact Binaries
    • Constraints on Gravitational Waves from the 2024 Vela Pulsar Glitch
    • An explicit and differentiable Wilson-Daubechies-Meyer transform for gravitational-wave data analysis
    • GWTC-4.0: Methods for Identifying and Characterizing Gravitational-wave Transients
    • GWTC-4.0: Updating the Gravitational-wave Transient Catalog with Observations from the First Part of the Fourth LIGO–Virgo–KAGRA Observing Run
    • Open Data from LIGO, Virgo, and KAGRA through the First Part of the Fourth Observing Run
    • Searches for Continuous Gravitational Waves from Supernova Remnants in the First Part of the LIGO-Virgo-KAGRA Fourth Observing Run
    • GW230814: investigation of a loud gravitational-wave signal observed with a single detector
    • First-time assessment of glitch-induced bias and uncertainty in inference of extreme mass ratio inspirals
    • All-sky search for long-duration gravitational-wave transients in the first part of the fourth LIGO-Virgo-KAGRA observing run
    • Enhancing evidence estimation through informed probability density approximation
    • GWTC-4.0: Tests of General Relativity. I. Overview and General Tests
    • GWTC-4.0: Tests of General Relativity. II. Parameterized Tests
    • GWTC-4.0: Tests of General Relativity. III. Tests of the Remnants
    • Deep Search for Joint Sources of Gravitational Waves and High-Energy Neutrinos with IceCube During the Third Observing Run of LIGO and Virgo
    • Bayesian power spectral density estimation for LISA noise based on penalized splines with a parametric boost
    • GWTC-4.0: Searches for Gravitational-Wave Lensing Signatures
    • All-sky search for continuous gravitational-wave signals from unknown neutron stars in binary systems in the first part of the fourth LIGO-Virgo-KAGRA observing run
    • GW241011 and GW241110: Exploring Binary Formation and Fundamental Physics with Asymmetric, High-spin Black Hole Coalescences
    • GW231123: A Binary Black Hole Merger with Total Mass 190–265 $M_ødot$
    • GW250114: Testing Hawking’s Area Law and the Kerr Nature of Black Holes
    • Directed searches for gravitational waves from ultralight vector boson clouds around merger remnant and galactic black holes during the first part of the fourth LIGO-Virgo-KAGRA observing run
    • Upper Limits on the Isotropic Gravitational-Wave Background from the first part of LIGO, Virgo, and KAGRA's fourth Observing Run
    • Analysis of GWTC-3 with fully precessing numerical relativity surrogate models
    • Variational inference for correlated gravitational wave detector network noise
    • GWTC-4.0: An introduction to version 4.0 of the gravitational-wave transient catalog
    • Rapid stellar and binary population synthesis with COMPAS: Methods paper II
    • Search for Continuous Gravitational Waves from Known Pulsars in the First Part of the Fourth LIGO-Virgo-KAGRA Observing Run
    • Search for Gravitational Waves Emitted from SN 2023ixf
    • GWTC-2.1: Deep Extended Catalog of Compact Binary Coalescences Observed by LIGO and Virgo during the First Half of the Third Observing Run
    • Observation of Gravitational Waves from the Coalescence of a 2.5-4.5 $M_ødot$ Compact Object and a Neutron Star
    • Search for gravitational-lensing signatures in the full third observing run of the LIGO--Virgo network
    • Asimov: A framework for coordinating parameter estimation workflows
    • Deep Follow-up for Gravitational-wave Inference: A Case Study with GW151226
    • Constraints on the Cosmic Expansion History from GWTC-3
    • GWTC-3: Compact Binary Coalescences Observed by LIGO and Virgo during the Second Part of the Third Observing Run
    • Open data from the third observing run of LIGO, Virgo, KAGRA, and GEO
    • Population of merging compact binaries inferred using gravitational waves through GWTC-3
    • Search for subsolar-mass black hole binaries in the second part of Advanced LIGO's and Advanced Virgo's third observing run
    • A follow-up on intermediate-mass black hole candidates in the second LIGO–Virgo observing run with the Bayes Coherence Ratio
    • LIGO–Virgo correlations between mass ratio and effective inspiral spin: testing the active galactic nuclei channel
    • Measuring the Properties of Active Galactic Nuclei Disks with Gravitational Waves
    • All-sky search for continuous gravitational waves from isolated neutron stars using Advanced LIGO and Advanced Virgo O3 data
    • All-sky, all-frequency directional search for persistent gravitational waves from Advanced LIGO's and Advanced Virgo's first three observing runs
    • Constraints on dark photon dark matter using data from LIGO's and Virgo's third observing run
    • Narrowband searches for continuous and long-duration transient gravitational waves from known pulsars in the LIGO--Virgo third observing run
    • Search for continuous gravitational waves from 20 accreting millisecond X-ray pulsars in O3 LIGO data
    • Search for continuous gravitational-wave emission from the Milky Way center in O3 LIGO--Virgo data
    • Search for gravitational waves associated with gamma-ray bursts detected by Fermi and Swift during the LIGO--Virgo run O3b
    • Search for gravitational waves from Scorpius X-1 with a hidden Markov model in O3 LIGO data
    • Searches for gravitational waves from known pulsars at two harmonics in the second and third LIGO--Virgo observing runs
    • Universal aspects of cohesion
    • transientlunatic/asimov: v0.3.2
    • GW190521 as a Merger of Proca Stars: A Potential New Vector Boson of 8.7 × 10⁻¹³ eV
    • All-sky search for long-duration gravitational-wave bursts in the third Advanced LIGO and Advanced Virgo run
    • Constraints from LIGO O3 data on gravitational-wave emission due to r-modes in the glitching pulsar PSR J0537--6910
    • GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo during the First Half of the Third Observing Run
    • Observation of Gravitational Waves from Two Neutron Star-Black Hole Coalescences
    • Population Properties of Compact Objects from the Second LIGO-Virgo Gravitational-Wave Transient Catalog
    • Search for anisotropic gravitational-wave backgrounds using data from Advanced LIGO and Advanced Virgo's first three observing runs
    • Search for lensing signatures in the gravitational-wave observations from the first half of LIGO--Virgo's third observing run
    • Searches for continuous gravitational waves from young supernova remnants in the early third observing run of Advanced LIGO and Virgo
    • Tests of general relativity with binary black holes from the second LIGO--Virgo gravitational-wave transient catalog
    • Upper limits on the isotropic gravitational-wave background from Advanced LIGO and Advanced Virgo's third observing run
    • Massively parallel Bayesian inference for transient gravitational-wave astronomy
    • Bayesian inference for compact binary coalescences with bilby: validation and application to the first LIGO–Virgo gravitational-wave transient catalogue
    • Enhancing confidence in the detection of gravitational waves from compact binaries using signal coherence
  • Talks
  • Slides
    • SBI for SGBW
  • Experience
  • Blog
    • Making a personal website workshop
    • Bilby Workshop for NZ Gravity
    • Avi's Pbilby Setup Notes
    • Ozstar Notes
    • Matched Filtering
    • Understanding exoplanet transits
    • Colorblind Palette for Plotting
    • Python Big-O Examples
    • PhD Reports
    • Installing LalSuite from Source

GWTC-4.0: Constraints on the Cosmic Expansion Rate and Modified Gravitational-wave Propagation

August 5, 2026·
LIGO Scientific Collaboration
,
Virgo Collaboration
,
KAGRA Collaboration
· 0 min read
Preprint DOI
publication
Last updated on August 5, 2026
← Bayesian P-spline recovery of stochastic gravitational-wave backgrounds in LISA August 21, 2026
Bayesian nonparametric estimation of correlated gravitational wave detector network noise using matrix-gamma process priors July 29, 2026 →

© 2026 Avi Vajpeyi

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