activity
20182026
most citedThe NANOGrav 15-year Data Set: Evidence for a Gravitational-Wave Background

1.5k citations · 3.4k across the 20 of their papers we have counts for

collaborators

21 papers

astro-ph.IM2026

LIGO A: Detector Design and Science Prospects Beyond A+

L. Sun, K. Kuns, B. J. J. Slagmolen +1153

We present the LIGO A detector concept, an upgrade for the LIGO observatories based on room-temperature interferometers beyond the fifth observing run (O5). Building on th…

gr-qc2026

Coalescing Compact Binary Parameter Estimation with Gravitational Waves in the Presence of non-Gaussian Transient Noise

Yannick Lecoeuche, Jess McIver, Alan M. Knee +7

Data from gravitational-wave (GW) detectors often contains a high rate of non-Gaussian transient noise, known as glitches. The parameters estimated from GW signals coinciding with…

gr-qc2025★ 3 cited

Inferring the spins of merging black holes in the presence of data-quality issues

Rhiannon Udall, Sophie Bini, Katerina Chatziioannou +5

Gravitational waves from black hole binary mergers carry information about the component spins, but inference is sensitive to analysis assumptions, which may be broken by terrestri…

gr-qc2025★ 2 cited

Glitches far from transient gravitational-wave events do not bias inference

Sophie Hourihane, Katerina Chatziioannou

Non-Gaussian noise in gravitational-wave detectors, known as "glitches," can bias the inferred parameters of transient signals when they occur nearby in time and frequency. These b…

gr-qc2025

Measuring spin precession from massive black hole binaries with gravitational waves: insights from time-domain signal morphology

Simona J. Miller, Maximiliano Isi, Katerina Chatziioannou +2

Robustly measuring binary black hole spins via gravitational waves is key to understanding these systems' astrophysical origins, but remains challenging -- especially for high-mass…

gr-qc2024★ 22 cited

The anti-aligned spin of GW191109: glitch mitigation and its implications

Rhiannon Udall, Sophie Hourihane, Simona Miller +4

With a high total mass and an inferred effective spin anti-aligned with the orbital axis at the 99.9% level, GW191109 is one of the most promising candidates for a dynamical format…

astro-ph.IM2024★ 60 cited

LIGO Detector Characterization in the first half of the fourth Observing run

S. Soni, B. K. Berger, D. Davis +232

Progress in gravitational-wave astronomy depends upon having sensitive detectors with good data quality. Since the end of the LIGO-Virgo-KAGRA third Observing run in March 2020, de…

gr-qc2023★ 20 cited

Assessing and Mitigating the Impact of Glitches on Gravitational-Wave Parameter Estimation: a Model Agnostic Approach

Sudarshan Ghonge, Joshua Brandt, J. M. Sullivan +7

In this paper we investigate the impact of transient noise artifacts, or {\it glitches}, on gravitational-wave inference from ground-based interferometer data, and test how modelin…

gr-qc2023★ 17 cited

How to Detect an Astrophysical Nanohertz Gravitational-Wave Background

Bence Bécsy, Neil J. Cornish, Patrick M. Meyers +93

Analysis of pulsar timing data have provided evidence for a stochastic gravitational wave background in the nHz frequency band. The most plausible source of such a background is th…

astro-ph.HE2023

Comparing recent PTA results on the nanohertz stochastic gravitational wave background

The International Pulsar Timing Array Collaboration, G. Agazie, J. Antoniadis +242

The Australian, Chinese, European, Indian, and North American pulsar timing array (PTA) collaborations recently reported, at varying levels, evidence for the presence of a nanohert…

astro-ph.HE2023★ 380 cited

The NANOGrav 15-year Data Set: Constraints on Supermassive Black Hole Binaries from the Gravitational Wave Background

Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald +111

The NANOGrav 15-year data set shows evidence for the presence of a low-frequency gravitational-wave background (GWB). While many physical processes can source such low-frequency gr…

astro-ph.HE2023★ 159 cited

The NANOGrav 15-year Data Set: Bayesian Limits on Gravitational Waves from Individual Supermassive Black Hole Binaries

Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald +96

Evidence for a low-frequency stochastic gravitational wave background has recently been reported based on analyses of pulsar timing array data. The most likely source of such a bac…

astro-ph.HE2023★ 801 cited

The NANOGrav 15-year Data Set: Search for Signals from New Physics

Adeela Afzal, Gabriella Agazie, Akash Anumarlapudi +120

The 15-year pulsar timing data set collected by the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) shows positive evidence for the presence of a low-freque…

astro-ph.HE2023★ 1.5k cited

The NANOGrav 15-year Data Set: Evidence for a Gravitational-Wave Background

Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald +111

We report multiple lines of evidence for a stochastic signal that is correlated among 67 pulsars from the 15-year pulsar-timing data set collected by the North American Nanohertz O…

astro-ph.HE2023★ 41 cited

The NANOGrav 15-year Gravitational-Wave Background Methods

Aaron D. Johnson, Patrick M. Meyers, Paul T. Baker +93

Pulsar timing arrays (PTAs) use an array of millisecond pulsars to search for gravitational waves in the nanohertz regime in pulse time of arrival data. This paper presents rigorou…

gr-qc2022★ 39 cited

Accurate characterization of the stochastic gravitational-wave background with pulsar timing arrays by likelihood reweighting

Sophie Hourihane, Patrick Meyers, Aaron Johnson +2

An isotropic stochastic background of nanohertz gravitational waves creates excess residual power in pulsar-timing-array datasets, with characteristic inter-pulsar correlations des…

gr-qc2022★ 16 cited

Concurrent estimation of noise and compact-binary signal parameters in gravitational-wave data

Cailin Plunkett, Sophie Hourihane, Katerina Chatziioannou

Gravitational-wave parameter estimation for compact binary signals typically relies on sequential estimation of the properties of the detector Gaussian noise and of the binary para…

gr-qc2022★ 88 cited

The curious case of GW200129: interplay between spin-precession inference and data-quality issues

Ethan Payne, Sophie Hourihane, Jacob Golomb +3

Measurement of spin-precession in black hole binary mergers observed with gravitational waves is an exciting milestone as it relates to both general relativistic dynamics and astro…

gr-qc2022★ 45 cited

Accurate modeling and mitigation of overlapping signals and glitches in gravitational-wave data

Sophie Hourihane, Katerina Chatziioannou, Marcella Wijngaarden +3

The increasing sensitivity of gravitational-wave detectors has brought about an increase in the rate of astrophysical signal detections as well as the rate of "glitches"; transient…

astro-ph.EP2019★ 27 cited

Micrometeoroid Events in LISA Pathfinder

James Ira Thorpe, Jacob Slutsky, John Baker +104

The zodiacal dust complex, a population of dust and small particles that pervades the Solar System, provides important insight into the formation and dynamics of planets, comets, a…

astro-ph.IM2018★ 143 cited

Identification and mitigation of narrow spectral artifacts that degrade searches for persistent gravitational waves in the first two observing runs of Advanced LIGO

P. B. Covas, A. Effler, E. Goetz +260

Searches are under way in Advanced LIGO and Virgo data for persistent gravitational waves from continuous sources, e.g. rapidly rotating galactic neutron stars, and stochastic sour…