activity
20222026
most citedThe NANOGrav 15-year Data Set: Evidence for a Gravitational-Wave Background

1.5k citations · 3.2k across the 14 of their papers we have counts for

collaborators

17 papers

astro-ph.HE2026

Constraints on Supermassive Black Hole Binaries from the Lack of Resolvable Sources in the NANOGrav 15-yr Dataset

Emiko C. Gardiner, Kayhan Gültekin, Philippe Turgeon +116

Pulsar timing arrays (PTAs) have found evidence of a gravitational wave background (GWB) consistent with a population of supermassive black hole binaries (SMBHBs), but have not yet…

astro-ph.IM2026

Pulsar Timing Array Sensitivity to Anisotropy: Empirical Sensitivity Curves, Scaling Relations, and the Multi-Resolution Pixel Basis

Taha T. Moursy, Nihan S. Pol, Gabriella Agazie +115

We quantify pulsar timing array (PTA) sensitivity to anisotropy in the gravitational wave background using the cross-correlation based Fisher information matrix in the pixel and sp…

astro-ph.CO2026

The NANOGrav 15 yr Data Set: Impacts of Customized Chromatic Noise Models on Gravitational Wave Analyses

Nikita Agarwal, Gabriella Agazie, Alessandra Amosso +120

We report updated nHz gravitational wave (GW) significance, characterization, and interpretations using the customized chromatic-noise models (CNMs) developed in Larsen, Baier et a…

astro-ph.CO2025

FrankenStat I: a New Approach to Pulsar Timing Array Data Combination

David Wright, Kalista Wayt, Jeffrey S. Hazboun +4

In 2023, after more than two decades of searching, pulsar timing array (PTA) collaborations around the world announced evidence for a stochastic gravitational wave background. It w…

astro-ph.IM2025

Expectations for the first supermassive black-hole binary resolved by PTAs I: Model efficacy

Levi Schult, Polina Petrov, Stephen R. Taylor +4

One of the most promising targets for Pulsar Timing Arrays (PTAs) is identifying an individual supermassive black hole binary (SMBHB) out of the population of binaries theorized to…

astro-ph.IM2025★ 1 cited

Expectations for the first supermassive black-hole binary resolved by PTAs II: Milestones for binary characterization

Polina Petrov, Levi Schult, Stephen R. Taylor +4

Following the recent evidence for a gravitational wave (GW) background found by pulsar timing array (PTA) experiments, the next major science milestone is resolving individual supe…

astro-ph.IM2025

Flexible Spectral Separation of Multiple Isotropic and Anisotropic Stochastic Gravitational Wave Backgrounds in LISA

Alexander W. Criswell, Sharan Banagiri, Jessica Lawrence +4

The Laser Interferometer Space Antenna (LISA) will observe mHz gravitational waves from a wide variety of astrophysical sources. Of these, some will be characterizable as individua…

astro-ph.HE2025★ 3 cited

Rapid Construction of Joint Pulsar Timing Array Datasets: The Lite Method

Bjorn Larsen, Chiara M. F. Mingarelli, Paul T. Baker +41

The International Pulsar Timing Array (IPTA)'s second data release (IPTA DR2) combines decades of observations of 65 millisecond pulsars from 7 radio telescopes. IPTA datasets shou…

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★ 16 cited

The NANOGrav 15-year Data Set: Search for Anisotropy in the Gravitational-Wave Background

Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald +90

The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) has reported evidence for the presence of an isotropic nanohertz gravitational wave background (GWB) in…

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…

gr-qc2023★ 76 cited

Searching for continuous Gravitational Waves in the second data release of the International Pulsar Timing Array

M. Falxa, S. Babak, P. T. Baker +123

The International Pulsar Timing Array 2nd data release is the combination of datasets from worldwide collaborations. In this study, we search for continuous waves: gravitational wa…

gr-qc2022

A Parallelized Bayesian Approach To Accelerated Gravitational-Wave Background Characterization

Stephen R. Taylor, Joseph Simon, Levi Schult +2

The characterization of nanohertz-frequency gravitational waves (GWs) with pulsar-timing arrays requires a continual expansion of datasets and monitored pulsars. Whereas detection…

astro-ph.HE2022★ 344 cited

The International Pulsar Timing Array second data release: Search for an isotropic Gravitational Wave Background

J. Antoniadis, Z. Arzoumanian, S. Babak +123

We searched for an isotropic stochastic gravitational wave background in the second data release of the International Pulsar Timing Array, a global collaboration synthesizing decad…

astro-ph.HE2022★ 5 cited

Wide-band timing of GMRT discovered millisecond pulsars

Shyam S. Sharma, Jayanta Roy, Bhaswati Bhattacharyya +6

Modeling of frequency-dependent effects, contributed by the turbulence in the free electron density of interstellar plasma, is required to enable the detection of the expected impr…