230 citations · 411 across the 19 of their papers we have counts for
19 papers
Stereoscopic gravitational-wave probe: Gravitational lensing of a binary merger in active galactic nuclei
Paul Martens, Samson H. W. Leong, Ryan Zhang +1
Recent work has shown that, if a large fraction of the LIGO-Virgo-KAGRA compact binary coalescences (CBCs) occur in accretion disks around active galactic nuclei (AGNs), many such…
When the black holes align: a subpopulation of aligned massive binary black holes observed via gravitational waves
Stefano Rinaldi, Charmaine Wong, M. Paola Vaccaro +4
In this work, we investigate the features present in the joint primary mass and effective spin distribution of binary black holes without relying on specific modelling assumptions.…
Testing cosmological isotropy with gravitational waves and gamma-ray bursts
Brian H. Y. Cheng, Donniel C. Cruz, Otto A. Hannuksela +18
The cosmological principle asserts that the Universe is homogeneous and isotropic on large enough scales. However, alternative cosmological models can bring about anisotropies thro…
Kick & spin: new probes for multi-messenger black-hole mergers in AGNs
Samson H. W. Leong, Juan Calderón Bustillo
Recoiling remnants of black-hole mergers in dense environments can produce bright electromagnetic (EM) counterparts to the gravitational-wave (GW) emission. Significance assessment…
Cosmological mirror symmetry and gravitational-wave helicity
Juan Calderón-Bustillo, Adrian del Rio, Samson H. W. Leong +1
Our current understanding of the Universe relies on the hypothesis that, when observed at sufficiently large scales, it looks statistically identical regardless of location or dire…
Identifying Proca-star mergers via consistent ultralight-boson mass estimates across gravitational-wave events
Ana Lorenzo-Medina, Juan Calderón Bustillo, Samson H. W. Leong
While black-hole and neutron-star mergers are the most plausible sources of current gravitational-wave observations, mergers of exotic compact objects may mimic these signals. Proc…
Gravitational-wave signatures of mirror (a)symmetry in binary black hole mergers: measurability and correlation to gravitational-wave recoil
Samson H. W. Leong, Alejandro Florido Tomé, Juan Calderón Bustillo +2
Precessing binary black-hole mergers can produce a net flux of circularly-polarized gravitational waves. This imbalance between left- and right-handed circularly polarized waves, q…
Constraining binary mergers in AGN disks using the non-observation of lensed gravitational waves
Samson H. W. Leong, Justin Janquart, Aditya Kumar Sharma +3
The dense and dynamic environments within active galactic nuclei (AGN) accretion disks may serve as prolific birthplaces for binary black holes (BBHs) and one possible origin for s…
Testing mirror symmetry in the Universe with LIGO-Virgo black-hole mergers
Juan Calderón Bustillo, Adrian del Rio, Nicolas Sanchis-Gual +2
Certain precessing black-hole mergers produce gravitational waves with net circular polarization, understood as an imbalance between right- and left-handed amplitudes. According to…
Impact of Bayesian Priors on the Inferred Masses of Quasi-Circular Intermediate-Mass Black Hole Binaries
Koustav Chandra, Archana Pai, Samson H. W. Leong +1
Observation of gravitational waves from inspiralling binary black holes has offered a unique opportunity to study the physical parameters of the component black holes. To infer the…
Impact of ringdown higher-order modes on black-hole mergers in dense environments: the scalar field case, detectability and parameter biases
Samson H. W. Leong, Juan Calderón Bustillo, Miguel Gracia-Linares +1
Dense environments hosting compact binary mergers can leave an imprint on the gravitational-wave emission which, in turn, can be used to identify the characteristics of the environ…
Exploring the hidden Universe: A novel phenomenological approach for recovering arbitrary gravitational-wave millilensing configurations
Anna Liu, Isaac C. F. Wong, Samson H. W. Leong +3
Since the first detection of gravitational waves in 2015, gravitational-wave astronomy has emerged as a rapidly advancing field that holds great potential for studying the cosmos,…
A complete measurement of a black-hole recoil through higher-order gravitational-wave modes
Juan Calderón Bustillo, Samson H. W. Leong, Koustav Chandra
General relativity predicts that gravitational waves (GWs) carry linear momentum. Consequently, the remnant black hole of a black-hole merger can inherit a recoil velocity or ``kic…
Impact of the wave-like nature of Proca stars on their gravitational-wave emission
Nicolas Sanchis-Gual, Juan Calderón Bustillo, Carlos Herdeiro +4
We present a systematic study of the dynamics and gravitational-wave emission of head-on collisions of spinning vector boson stars, known as Proca stars. To this aim we build a cat…
Searching for vector boson-star mergers within LIGO-Virgo intermediate-mass black-hole merger candidates
Juan Calderon Bustillo, Nicolas Sanchis-Gual, Samson H. W. Leong +7
We present the first systematic search for exotic compact mergers in Advanced LIGO and Virgo events. We compare the short gravitational-wave signals GW190521, GW190426190642, G…
Gravitational-wave parameter inference with the Newman-Penrose scalar
Juan Calderon Bustillo, Isaac C. F. Wong, Nicolas Sanchis-Gual +7
Detection and parameter inference of gravitational-wave signals \ncor{from compact mergers} rely on the comparison of the incoming detector strain data to waveform templates…
GW190521 as a black-hole merger coincident with the ZTF19abanrhr flare
Juan Calderón Bustillo, Samson H. W. Leong, Koustav Chandra +2
We present an analysis that reconciles the gravitational-wave signal GW190521 observed by the Advanced LIGO and Advanced Virgo detectors with the electromagnetic flare ZTF19abanrhr…
GW190521 as a merger of Proca stars: a potential new vector boson of eV
Juan Calderón Bustillo, Nicolas Sanchis-Gual, Alejandro Torres-Forné +6
Advanced LIGO-Virgo reported a short gravitational-wave signal (GW190521) interpreted as a quasi-circular merger of black holes, one populating the pair-instability supernova gap,…
Mapping the Universe Expansion: Enabling percent-level measurements of the Hubble Constant with a single binary neutron-star merger detection
Juan Calderón Bustillo, Samson H. W. Leong, Tim Dietrich +1
The joint observation of the gravitational-wave and electromagnetic signal from the binary neutron-star merger GW170817 allowed for a new independent measurement of the Hubble cons…