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Investigating the effect of sensitivity of KAGRA on sky localization of gravitational-wave sources from compact binary coalescences
Alvin K. Y. Li, Peony K. K. Lai, Elwin K. Y. Li +1
The addition of KAGRA to the global gravitational-wave detector network introduces new baselines and complementary antenna response patterns that can enhance sky localization for c…
Weak Lensing Approximation of Wave-optics Effects from General Symmetric Lens Profiles
Zhao-Feng Wu, Otto A. Hannuksela, Martin Hendry +1
Gravitational lensing of electromagnetic (EM) waves has yielded many profound discoveries across fundamental physics, astronomy, astrophysics, and cosmology. Similar to EM waves, g…
LensingFlow: An Automated Workflow for Gravitational Wave Lensing Analyses
Mick Wright, Justin Janquart, Paolo Cremonese +18
In this work, we present LensingFlow. This is an implementation of an automated workflow to search for evidence of gravitational lensing in a large series of gravitational wave eve…
Residual test to search for microlensing signatures in strongly lensed gravitational wave signals
Eungwang Seo, Xikai Shan, Justin Janquart +3
When a gravitational wave signal encounters a massive object, such as a galaxy or galaxy cluster, it undergoes strong gravitational lensing, producing multiple copies of the origin…
Millilensing induced systematic biases in parameterized tests of General Relativity
Anna Liu, Rohit S. Chandramouli, Otto A. Hannuksela +2
Tests of general relativity (GR) can be systematically biased when our waveform models are inaccurate. We here study systematic biases in tests of general relativity induced by neg…
Inferring cosmology from gravitational waves using non-parametric detector-frame mass distribution
Thomas C. K. Ng, Stefano Rinaldi, Otto A. Hannuksela
The challenge of understanding the Universe's dynamics, particularly the Hubble tension, requires precise measurements of the Hubble constant. Building upon the existing spectral-s…
What is the nature of GW230529? An exploration of the gravitational lensing hypothesis
Justin Janquart, David Keitel, Rico K. L. Lo +26
On the 29th of May 2023, the LIGO-Virgo-KAGRA Collaboration observed a compact binary coalescence event consistent with a neutron star-black hole merger, though the heavier object…
Uncovering faint lensed gravitational-wave signals and reprioritizing their follow-up analysis using galaxy lensing forecasts with detected counterparts
Leo C. Y. Ng, Justin Janquart, Hemantakumar Phurailatpam +4
Like light, gravitational waves can be gravitationally lensed by massive astrophysical objects. Strong gravitational lensing by galaxies and galaxy clusters is anticipated to becom…
How well can modified gravitational wave propagation be constrained with strong lensing?
Harsh Narola, Justin Janquart, Leïla Haegel +3
Strong gravitational lensing produces multiple images of a gravitational wave (GW) signal, which can be observed by detectors as time-separated copies of the same event. It has bee…
Mitigating the effect of the population model uncertainty on the strong lensing Bayes factor using nonparametric methods
Damon H. T. Cheung, Stefano Rinaldi, Martina Toscani +1
Strong lensing of gravitational waves can produce several detectable images as repeated events in the upcoming observing runs, which can be detected with the posterior overlap anal…
Characterizing Gravitational Wave Detector Networks: From A to Cosmic Explorer
Ish Gupta, Chaitanya Afle, K. G. Arun +44
Gravitational-wave observations by the Laser Interferometer Gravitational-Wave Observatory (LIGO) and Virgo have provided us a new tool to explore the Universe on all scales from n…
Follow-up Analyses to the O3 LIGO-Virgo-KAGRA Lensing Searches
Justin Janquart, Mick Wright, Srashti Goyal +28
Along their path from source to observer, gravitational waves may be gravitationally lensed by massive objects. This results in distortions of the observed signal which can be used…
The Return of GOLUM: Improving Distributed Joint Parameter Estimation for Strongly-Lensed Gravitational Waves
Justin Janquart, K. Haris, Otto A. Hannuksela +1
Owing to the forecasted improved sensitivity of ground-based gravitational-wave detectors, new research avenues will become accessible. This is the case for gravitational-wave stro…
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,…
Virgo Detector Characterization and Data Quality: tools
F. Acernese, M. Agathos, A. Ain +491
Detector characterization and data quality studies -- collectively referred to as {\em DetChar} activities in this article -- are paramount to the scientific exploitation of the jo…
Virgo Detector Characterization and Data Quality: results from the O3 run
F. Acernese, M. Agathos, A. Ain +491
The Advanced Virgo detector has contributed with its data to the rapid growth of the number of detected gravitational-wave (GW) signals in the past few years, alongside the two Adv…
Extracting ultralight boson properties from boson clouds around post-merger remnants
Kelvin H. M. Chan, Otto A. Hannuksela
Ultralight bosons are a class of hypothetical particles that could potentially solve critical problems in fields ranging from cosmology to astrophysics and fundamental physics. If…
Deep Learning-based Search for Microlensing Signature from Binary Black Hole Events in GWTC-1 and -2
Kyungmin Kim, Joongoo Lee, Otto A. Hannuksela +1
We present the result of the first deep learning-based search for the signature of microlensing in gravitational waves. This search seeks the signature induced by lenses with masse…
Virgo Detector Characterization and Data Quality during the O3 run
F. Acernese, M. Agathos, A. Ain +491
The Advanced Virgo detector has contributed with its data to the rapid growth of the number of detected gravitational-wave signals in the past few years, alongside the two LIGO ins…
GOLUM: A fast and precise methodology to search for, and analyze, strongly lensed gravitational-wave events
Justin Janquart, Otto A. Hannuksela, K. Haris +1
Like light, gravitational waves can be gravitationally lensed by massive objects along their travel path. Strong lensing produces several images from the same binary coalescence an…
The Virgo O3 run and the impact of the environment
F. Acernese, M. Agathos, A. Ain +486
Sources of geophysical noise (such as wind, sea waves and earthquakes) or of anthropogenic noise impact ground-based gravitational-wave interferometric detectors, causing transient…
Detectability of microlensed gravitational waves
Simon M. C. Yeung, Mark H. Y. Cheung, Joseph A. J. Gais +2
Gravitational lensing describes the bending of the trajectories of light and gravitational waves due to the gravitational potential of a massive object. Strong lensing by galaxies…
On the identification of individual gravitational wave image types of a lensed system using higher-order modes
Justin Janquart, Eungwang Seo, Otto A. Hannuksela +2
Similarly to light, gravitational waves can be gravitationally lensed as they propagate near massive astrophysical objects such as galaxies, stars, or black holes. In recent years,…
A fast and precise methodology to search for and analyse strongly lensed gravitational-wave events
Justin Janquart, Otto A. Hannuksela, Haris K. +1
Gravitational waves, like light, can be gravitationally lensed by massive astrophysical objects such as galaxies and galaxy clusters. Strong gravitational-wave lensing, forecasted…