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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)…
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…
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…
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…
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…
Tests of General Relativity with GW170817
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1145
The recent discovery by Advanced LIGO and Advanced Virgo of a gravitational wave signal from a binary neutron star inspiral has enabled tests of general relativity (GR) with this n…
Search for gravitational waves from a long-lived remnant of the binary neutron star merger GW170817
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1138
One unanswered question about the binary neutron star coalescence GW170817 is the nature of its post-merger remnant. A previous search for post-merger gravitational waves targeted…
GW170817: Measurements of Neutron Star Radii and Equation of State
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1149
On 17 August 2017, the LIGO and Virgo observatories made the first direct detection of gravitational waves from the coalescence of a neutron star binary system. The detection of th…
Properties of the binary neutron star merger GW170817
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1148
On August 17, 2017, the Advanced LIGO and Advanced Virgo gravitational-wave detectors observed a low-mass compact binary inspiral. The initial sky localization of the source of the…
Towards a framework for testing general relativity with extreme-mass-ratio-inspiral observations
Alvin J. K. Chua, Sonke Hee, Will J. Handley +5
Extreme-mass-ratio-inspiral observations from future space-based gravitational-wave detectors such as LISA will enable strong-field tests of general relativity with unprecedented p…
Full Band All-sky Search for Periodic Gravitational Waves in the O1 LIGO Data
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1099
We report on a new all-sky search for periodic gravitational waves in the frequency band 475-2000 Hz and with a frequency time derivative in the range of [-1.0e-8, +1e-9] Hz/s. Pot…
A Search for Tensor, Vector, and Scalar Polarizations in the Stochastic Gravitational-Wave Background
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1097
The detection of gravitational waves with Advanced LIGO and Advanced Virgo has enabled novel tests of general relativity, including direct study of the polarization of gravitationa…