S. Klimenko
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View article: Inferring additional physics through unmodelled signal reconstructions
Inferring additional physics through unmodelled signal reconstructions Open
Parameter estimation of gravitational wave data is often computationally expensive, requiring simplifying assumptions such as circularisation of binary orbits. Although, if included, the sub-dominant effects like orbital eccentricity may p…
View article: Gravitational Waves Detected by a Burst Search in LIGO/Virgo's Third Observing Run
Gravitational Waves Detected by a Burst Search in LIGO/Virgo's Third Observing Run Open
Burst searches identify gravitational-wave (GW) signals in the detector data without use of a specific signal model, unlike the matched-filter searches that correlate data with simulated signal waveforms (templates). While matched filters …
View article: Gravitational Wave Detector Sensitivity to Eccentric Black Hole Mergers
Gravitational Wave Detector Sensitivity to Eccentric Black Hole Mergers Open
Orbital eccentricity in compact binary mergers carries crucial information about the binary's formation and environment. There are emerging signs that some of the mergers detected by the LIGO and Virgo gravitational wave detectors could in…
View article: Optically targeted search for gravitational waves emitted by core-collapse supernovae during the third observing run of Advanced LIGO and Advanced Virgo
Optically targeted search for gravitational waves emitted by core-collapse supernovae during the third observing run of Advanced LIGO and Advanced Virgo Open
We present the results from a search for gravitational-wave transients associated with core-collapse supernovae observed optically within 30 Mpc during the third observing run of Advanced LIGO and Advanced Virgo. No gravitational wave asso…
View article: An Optically Targeted Search for Gravitational Waves emitted by Core-Collapse Supernovae during the Third Observing Run of Advanced LIGO and Advanced Virgo
An Optically Targeted Search for Gravitational Waves emitted by Core-Collapse Supernovae during the Third Observing Run of Advanced LIGO and Advanced Virgo Open
We present the results from a search for gravitational-wave transients associated with core-collapse supernovae observed optically within 30 Mpc during the third observing run of Advanced LIGO and Advanced Virgo. No gravitational wave asso…
View article: Search for gravitational-wave bursts in the third Advanced LIGO-Virgo run with coherent WaveBurst enhanced by machine learning
Search for gravitational-wave bursts in the third Advanced LIGO-Virgo run with coherent WaveBurst enhanced by machine learning Open
This paper presents a search for generic short-duration gravitational-wave (GW) transients (or GW bursts) in the data from the third observing run of Advanced LIGO and Advanced Virgo. We use a coherent WaveBurst (cWB) pipeline enhanced wit…
View article: First machine learning gravitational-wave search mock data challenge
First machine learning gravitational-wave search mock data challenge Open
We present the results of the first Machine Learning Gravitational-Wave Search Mock Data Challenge. For this challenge, participating groups had to identify gravitational-wave signals from binary black hole mergers of increasing complexity…
View article: Search for gravitational-wave bursts in the third Advanced LIGO-Virgo run with coherent WaveBurst enhanced by Machine Learning
Search for gravitational-wave bursts in the third Advanced LIGO-Virgo run with coherent WaveBurst enhanced by Machine Learning Open
This paper presents a search for generic short-duration gravitational-wave (GW) transients (or GW bursts) in the data from the third observing run of Advanced LIGO and Advanced Virgo. We use coherent WaveBurst (cWB) pipeline enhanced with …
View article: MLGWSC-1: The first Machine Learning Gravitational-Wave Search Mock Data Challenge
MLGWSC-1: The first Machine Learning Gravitational-Wave Search Mock Data Challenge Open
We present the results of the first Machine Learning Gravitational-Wave Search Mock Data Challenge (MLGWSC-1). For this challenge, participating groups had to identify gravitational-wave signals from binary black hole mergers of increasing…
View article: Search for binary black hole mergers in the third observing run of Advanced LIGO-Virgo using coherent WaveBurst enhanced with machine learning
Search for binary black hole mergers in the third observing run of Advanced LIGO-Virgo using coherent WaveBurst enhanced with machine learning Open
In this work, we use the coherent WaveBurst (cWB) pipeline enhanced with machine learning (ML) to search for binary black hole (BBH) mergers in the Advanced LIGO-Virgo strain data from the third observing run. We detect, with equivalent or…
View article: Wavescan: multiresolution regression of gravitational-wave data
Wavescan: multiresolution regression of gravitational-wave data Open
Identification of a transient gravitational-wave signal embedded into non-stationary noise requires the analysis of time-dependent spectral components in the resulting time series. The time-frequency distribution of the signal power can be…
View article: Minimally-modeled search of higher multipole gravitational-wave radiation in compact binary coalescences
Minimally-modeled search of higher multipole gravitational-wave radiation in compact binary coalescences Open
As the Advanced LIGO and Advanced Virgo interferometers, soon to be joined by the KAGRA interferometer, increase their sensitivity, they detect an ever-larger number of gravitational waves with a significant presence of higher multipoles (…
View article: Detecting and reconstructing gravitational waves from the next galactic core-collapse supernova in the advanced detector era
Detecting and reconstructing gravitational waves from the next galactic core-collapse supernova in the advanced detector era Open
We performed a detailed analysis of the detectability of a wide range of gravitational waves derived from core-collapse supernova simulations using gravitational-wave detector noise scaled to the sensitivity of the upcoming fourth and fift…
View article: Detection of LIGO-Virgo binary black holes in the pair-instability mass gap
Detection of LIGO-Virgo binary black holes in the pair-instability mass gap Open
By probing the population of binary black hole (BBH) mergers detected by LIGO-Virgo, we can infer properties about the underlying black hole formation channels. A mechanism known as pair-instability (PI) supernova is expected to prevent th…
View article: Optimization of model independent gravitational wave search for binary black hole mergers using machine learning
Optimization of model independent gravitational wave search for binary black hole mergers using machine learning Open
The Coherent WaveBurst (cWB) search algorithm identifies generic\ngravitational wave (GW) signals in the LIGO-Virgo strain data. We propose a\nmachine learning (ML) method to optimize the pipeline sensitivity to the\nspecial class of GW si…
View article: Detection of LIGO-Virgo binary black holes in the pair-instability mass gap
Detection of LIGO-Virgo binary black holes in the pair-instability mass gap Open
By probing the population of binary black hole (BBH) mergers detected by LIGO-Virgo, we can infer properties about the underlying black hole formation channels. A mechanism known as pair-instability (PI) supernova is expected to prevent th…
View article: Observing an intermediate-mass black hole GW190521 with minimal assumptions
Observing an intermediate-mass black hole GW190521 with minimal assumptions Open
On May 21, 2019 the Advanced LIGO and Advanced Virgo detectors observed a gravitational-wave transient GW190521, the heaviest binary black-hole merger detected to date with remnant mass of 142 Mm that was published recently. This observati…
View article: Coherent WaveBurst, a pipeline for unmodeled gravitational-wave data analysis
Coherent WaveBurst, a pipeline for unmodeled gravitational-wave data analysis Open
coherent WaveBurst (cWB) is a highly configurable pipeline designed to detect a broad range of gravitational-wave (GW) transients in the data of the worldwide network of GW detectors. The algorithmic core of cWB is a time-frequency analysi…
View article: cWB pipeline library: 6.3.1
cWB pipeline library: 6.3.1 Open
This new release ( cWB-6.3.1 ) is a minor upgrade of the first public version of cWB ( cWB-6.3.0 ): it fixes minor problems with the previous version and it introduces some new functionalities in the cwb_gwosc command. It is still fully co…
View article: cWB pipeline library
cWB pipeline library Open
This release marks the first public version of cWB ( cWB-6.3.0 ): it is fully compatible (i.e. in terms of results) with the version ( wat-6.2.6 ) used for the analysis of the LIGO and Virgo data collected during the Second Observational r…
View article: Hierarchical Black Hole Mergers in Active Galactic Nuclei
Hierarchical Black Hole Mergers in Active Galactic Nuclei Open
The origins of the stellar-mass black hole mergers discovered by LIGO/Virgo are still unknown. Here we show that if migration traps develop in the accretion disks of active galactic nuclei (AGNs) and promote the mergers of their captive bl…
View article: Wider look at the gravitational-wave transients from GWTC-1 using an unmodeled reconstruction method
Wider look at the gravitational-wave transients from GWTC-1 using an unmodeled reconstruction method Open
In this paper, we investigate the morphology of the events from the GWTC-1 catalog of compact binary coalescences as reconstructed by a method based on coherent excess power: we use an open-source version of the coherent WaveBurst (cWB) an…
View article: Measurement of sub-dominant harmonic modes for gravitational wave emission from a population of binary black holes
Measurement of sub-dominant harmonic modes for gravitational wave emission from a population of binary black holes Open
Measurements of multiple harmonic modes in the gravitational wave signals from binary black hole events could provide an accurate test of general relativity, however they have never been observed before. The sub-dominant modes, other than …
View article: Detection of (2,2) quasinormal mode from a population of black holes with a constructive summation method
Detection of (2,2) quasinormal mode from a population of black holes with a constructive summation method Open
The quasi normal modes (QNMs) associated with gravitational-wave signals from binary black hole (BBH) mergers can provide deep insight into the remnant's properties. Once design sensitivity is achieved, present ground-based gravitational w…
View article: Enhancing the significance of gravitational wave bursts through signal classification
Enhancing the significance of gravitational wave bursts through signal classification Open
The quest to observe gravitational waves challenges our ability to\ndiscriminate signals from detector noise. This issue is especially relevant for\ntransient gravitational waves searches with a robust eyes wide open approach,\nthe so call…
View article: Steganography method for the G.711 channel
Steganography method for the G.711 channel Open
This paper deals with an improved algorithm developed for the transmission of the hidden information in the G.711 channel [1]. The subject of the research is a method of improving characteristics of a steganography system by means of using…
View article: On similarity of binary black hole gravitational-wave skymaps: to observe or to wait?
On similarity of binary black hole gravitational-wave skymaps: to observe or to wait? Open
Localization estimates for GW150914, the first binary black hole detected by the LIGO instruments, were shared with partner facilities for electromagnetic follow-up. While the source was a compact binary coalescence (CBC), it was first ide…
View article: Method for detection and reconstruction of gravitational wave transients with networks of advanced detectors
Method for detection and reconstruction of gravitational wave transients with networks of advanced detectors Open
We present a method for detection and reconstruction of the\ngravitational-wave (GW) transients with the networks of advanced detectors.\nOriginally designed to search for transients with the initial GW detectors, it\nuses significantly im…