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Untargeted Bayesian search of anisotropic gravitational-wave backgrounds through the analytical marginalization of the posterior
Adrian Ka-Wai Chung, Nicolas Yunes
We develop a method to perform an untargeted Bayesian search for anisotropic gravitational-wave backgrounds that can efficiently and accurately reconstruct the background intensity…
Spectral Method for the Gravitational Perturbations of Black Holes: Schwarzschild Background Case
Adrian Ka-Wai Chung, Pratik Wagle, Nicolas Yunes
We develop a novel technique through spectral decompositions to study the gravitational perturbations of a black hole, without needing to decouple the linearized field equations in…
Targeted search for the kinematic dipole of the gravitational-wave background
Adrian Ka-Wai Chung, Alexander C. Jenkins, Joseph D. Romano +1
There is growing interest in using current and future gravitational-wave interferometers to search for anisotropies in the gravitational-wave background. One guaranteed anisotropic…
Searching for ultralight bosons with supermassive black hole ringdown
Adrian Ka-Wai Chung, Joseph Gais, Mark H. Y. Cheung +1
One class of competitive candidates for dark matter is ultralight bosons. If they exist, these bosons may form long-lived bosonic clouds surrounding rotating black holes via superr…
Lensing of Gravitational Waves as a Novel Probe of Graviton Mass
Ka-Wai Chung, Tjonnie Guang Feng Li
The diffraction patterns of lensed gravitational waves encode information about their propagation speeds. If gravitons have mass, the dispersion relation and speed of gravitational…
Upper limits on the temperature of inspiraling astrophysical black holes
Adrian Ka-Wai Chung, Mairi Sakellariadou
We present a method to constrain the temperature of astrophysical black holes through detecting the inspiral phase of binary black hole coalescences. At sufficient separation, insp…
Ringdown Spectroscopy of Rotating Black Holes Pierced by Cosmic Strings
Mark Ho-Yeuk Cheung, Levi Wing-Hei Poon, Ka-Wai Chung +1
Multiple gauge theories predict the presence of cosmic strings with different mass densities . We derive an equation governing the perturbations of a rotating black hole pi…
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…
Constraints on cosmic strings using data from the first Advanced LIGO observing run
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1042
Cosmic strings are topological defects which can be formed in GUT-scale phase transitions in the early universe. They are also predicted to form in the context of string theory. Th…
GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1107
On August 14, 2017 at 10:30:43 UTC, the Advanced Virgo detector and the two Advanced LIGO detectors coherently observed a transient gravitational-wave signal produced by the coales…
GW170817: Implications for the Stochastic Gravitational-Wave Background from Compact Binary Coalescences
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1099
The LIGO Scientific and Virgo Collaborations have announced the first detection of gravitational waves from the coalescence of two neutron stars. The merger rate of binary neutron…
First search for nontensorial gravitational waves from known pulsars
The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1050
We present results from the first directed search for nontensorial gravitational waves. While general relativity allows for tensorial (plus and cross) modes only, a generic metric…