3.6k citations · 15.8k across the 64 of their papers we have counts for
64 papers
Relativistic model of binary extreme-mass-ratio inspiral systems and their gravitational radiation
Yucheng Yin, Josh Mathews, Alvin J. K. Chua +1
A binary extreme-mass-ratio inspiral (b-EMRI) is a hierarchical triple system consisting of a stellar-mass binary black hole (BBH) orbiting a central Kerr supermassive black hole (…
Waveform Modelling for the Laser Interferometer Space Antenna
LISA Consortium Waveform Working Group, Niayesh Afshordi, Sarp Akçay +144
LISA, the Laser Interferometer Space Antenna, will usher in a new era in gravitational-wave astronomy. As the first anticipated space-based gravitational-wave detector, it will exp…
Calibrating approximate Bayesian credible intervals of gravitational-wave parameters
Ruiting Mao, Jeong Eun Lee, Ollie Burke +3
Approximations are commonly employed in realistic applications of scientific Bayesian inference, often due to convenience if not necessity. In the field of gravitational-wave (GW)…
Improving the scalability of Gaussian-process error marginalization in gravitational-wave inference
Miaoxin Liu, Xiao-Dong Li, Alvin J. K. Chua
The accuracy of Bayesian inference can be negatively affected by the use of inaccurate forward models. In the case of gravitational-wave inference, accurate but computationally exp…
Fast and Fourier: Extreme Mass Ratio Inspiral Waveforms in the Frequency Domain
Lorenzo Speri, Michael L. Katz, Alvin J. K. Chua +5
Extreme Mass Ratio Inspirals (EMRIs) are one of the key sources for future space-based gravitational wave interferometers. Measurements of EMRI gravitational waves are expected to…
Posterior predictive checking for gravitational-wave detection with pulsar timing arrays: II. Posterior predictive distributions and pseudo Bayes factors
Patrick M. Meyers, Katerina Chatziioannou, Michele Vallisneri +1
The detection of nanoHertz gravitational waves through pulsar timing arrays hinges on identifying a common stochastic process affecting all pulsars in a correlated way across the s…
Posterior predictive checking for gravitational-wave detection with pulsar timing arrays: I. The optimal statistic
Michele Vallisneri, Patrick M. Meyers, Katerina Chatziioannou +1
A gravitational-wave background can be detected in pulsar-timing-array data as Hellings--Downs correlations among the timing residuals measured for different pulsars. The optimal s…
Modeling transient resonances in extreme-mass-ratio inspirals
Priti Gupta, Lorenzo Speri, Béatrice Bonga +2
Extreme-mass-ratio inspirals are one of the most exciting and promising target sources for space-based interferometers (such as LISA, TianQin). The observation of their emitted gra…
A one-stop function for gravitational-wave detection, identification and inference
Alvin J. K. Chua
I define here a novel function on a modeled space of gravitational-wave signals, before studying its properties as a statistic for detection, as an objective function for identific…
Assessing the data-analysis impact of LISA orbit approximations using a GPU-accelerated response model
Michael L. Katz, Jean-Baptiste Bayle, Alvin J. K. Chua +1
The analysis of gravitational wave (GW) datasets is based on the comparison of measured time series with theoretical templates of the detector's response to a variety of source par…
Astrophysics with the Laser Interferometer Space Antenna
Pau Amaro Seoane, Jeff Andrews, Manuel Arca Sedda +156
The Laser Interferometer Space Antenna (LISA) will be a transformative experiment for gravitational wave astronomy, and, as such, it will offer unique opportunities to address many…
Non-local parameter degeneracy in the intrinsic space of gravitational-wave signals from extreme-mass-ratio inspirals
Alvin J. K. Chua, Curt J. Cutler
Extreme-mass-ratio inspirals will be prized sources for the upcoming space-based gravitational-wave observatory LISA. The hunt for these is beset by many open theoretical and compu…
The Effect of Mission Duration on LISA Science Objectives
Pau Amaro Seoane, Manuel Arca Sedda, Stanislav Babak +38
The science objectives of the LISA mission have been defined under the implicit assumption of a 4 yr continuous data stream. Based on the performance of LISA Pathfinder, it is now…
FastEMRIWaveforms: New tools for millihertz gravitational-wave data analysis
Michael L. Katz, Alvin J. K. Chua, Lorenzo Speri +2
We present the FastEMRIWaveforms (FEW) package, a collection of tools to build and analyze extreme mass ratio inspiral (EMRI) waveforms. Here, we expand on the Physical Review Lett…
Importance of tidal resonances in extreme-mass-ratio inspirals
Priti Gupta, Béatrice Bonga, Alvin J. K. Chua +1
Extreme mass ratio inspirals (EMRIs) will be important sources for future space-based gravitational-wave detectors. In recent work, tidal resonances in binary orbital evolution ind…
Adiabatic waveforms for extreme mass-ratio inspirals via multivoice decomposition in time and frequency
Scott A. Hughes, Niels Warburton, Gaurav Khanna +2
We compute adiabatic waveforms for extreme mass-ratio inspirals (EMRIs) by "stitching" together a long inspiral waveform from a sequence of waveform snapshots, each of which corres…
Exciting modes due to the aberration of gravitational waves: Measurability for extreme-mass-ratio inspirals
Alejandro Torres-Orjuela, Pau Amaro Seoane, Zeyuan Xuan +3
Gravitational waves from a source moving relative to us can suffer from special-relativistic effects such as aberration. The required velocities for these to be significant are on…
Rapid generation of fully relativistic extreme-mass-ratio-inspiral waveform templates for LISA data analysis
Alvin J. K. Chua, Michael L. Katz, Niels Warburton +1
The future space mission LISA will observe a wealth of gravitational-wave sources at millihertz frequencies. Of these, the extreme-mass-ratio inspirals of compact objects into mass…
On parametric tests of relativity with false degrees of freedom
Alvin J. K. Chua, Michele Vallisneri
General relativity can be tested by comparing the binary-inspiral signals found in LIGO--Virgo data against waveform models that are augmented with artificial degrees of freedom. T…
GPU-accelerated massive black hole binary parameter estimation with LISA
Michael L. Katz, Sylvain Marsat, Alvin J. K. Chua +2
The Laser Interferometer Space Antenna (LISA) is slated for launch in the early 2030s. A main target of the mission is massive black hole binaries that have an expected detection r…
2 Fast 2 Fiducial: Gaussian processes for the interpolation and marginalization of waveform error in extreme-mass-ratio-inspiral parameter estimation
Alvin J. K. Chua, Natalia Korsakova, Christopher J. Moore +2
A number of open problems hinder our present ability to extract scientific information from data that will be gathered by the near-future gravitational-wave mission LISA. Many of t…
Learning Bayesian posteriors with neural networks for gravitational-wave inference
Alvin J. K. Chua, Michele Vallisneri
We seek to achieve the Holy Grail of Bayesian inference for gravitational-wave astronomy: using deep-learning techniques to instantly produce the posterior for the source…
The unique potential of extreme mass-ratio inspirals for gravitational-wave astronomy
Christopher P. L. Berry, Scott A. Hughes, Carlos F. Sopuerta +6
The inspiral of a stellar-mass compact object into a massive (-) black hole produces an intricate gravitational-wave signal. Due to the extreme-mass…
Sampling from manifold-restricted distributions using tangent bundle projections
Alvin J. K. Chua
A common problem in Bayesian inference is the sampling of target probability distributions at sufficient resolution and accuracy to estimate the probability density, and to compute…