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Multiband gravitational-wave searches for ultralight bosons
Published 2021“…© 2020 American Physical Society. Gravitational waves may be one of the few direct observables produced by ultralight bosons, conjectured dark matter candidates that could be the key to several problems in particle theory, high-energy physics and cosmology. …”
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Distance measures in gravitational-wave astrophysics and cosmology
Published 2022“…We present quantities which characterize the sensitivity of gravitational-wave observatories to sources at cosmological distances. …”
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Exploring the sensitivity of next generation gravitational wave detectors
Published 2019“…The second-generation of gravitational-wave detectors are just starting operation, and have already yielding their first detections. …”
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Gravitational-wave Constraints on the Equatorial Ellipticity of Millisecond Pulsars
Published 2022“…We present a search for continuous gravitational waves from five radio pulsars, comprising three recycled pulsars (PSR J0437-4715, PSR J0711-6830, and PSR J0737-3039A) and two young pulsars: the Crab pulsar (J0534+2200) and the Vela pulsar (J0835-4510). …”
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Constraining black hole mimickers with gravitational wave observations
Published 2022“…LIGO and Virgo have recently observed a number of gravitational wave (GW) signals that are fully consistent with being emitted by binary black holes described by general relativity. …”
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Systematic and Statistical Uncertainties in the Characterization of Gravitational-Wave Sources
Published 2023“…With the increasing number of gravitational-wave (GW) detections made by LIGO-Virgo-Kagra during the first three observing runs, the field of GW astrophysics has a growing need for prompt and precise parameter estimation (PE) of GW sources. …”
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Exploring fundamental physics and astrophysics with gravitational-wave sources
Published 2023“…In this thesis, I investigate the new physics that can be learnt by the current and future gravitational wave (GW) observations. With the current observations, I study how multiple binary black hole (BBH) spin measurements can be combined by hierarchical Bayesian framework to search for ultralight bosons (e.g., axions). …”
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OBSERVATIONAL SELECTION EFFECTS WITH GROUND-BASED GRAVITATIONAL WAVE DETECTORS
Published 2017“…These effects, along with knowledge of the LIGO antenna pattern, can inform EM follow-up activities and optimization, including the possibility of directing observations even before gravitational-wave events occur.…”
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Information-theoretic approach to the gravitational-wave burst detection problem
Published 2017“…One potential type of detectable gravitational wave is short-duration gravitational-wave bursts, whose waveforms can be difficult to predict. …”
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Observing gravitational-wave transient GW150914 with minimal assumptions
Published 2017“…The gravitational-wave signal GW150914 was first identified on September 14, 2015, by searches for short-duration gravitational-wave transients. …”
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Parameter Estimation for Gravitational-wave Bursts with the BayesWave Pipeline
Published 2017“…We provide a comprehensive multi-aspect study of the performance of a pipeline used by the LIGO-Virgo Collaboration for estimating parameters of gravitational-wave bursts. We add simulated signals with four different morphologies (sine-Gaussians (SGs), Gaussians, white-noise bursts, and binary black hole signals) to simulated noise samples representing noise of the two Advanced LIGO detectors during their first observing run. …”
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Frequency-dependent responses in third generation gravitational-wave detectors
Published 2018“…Interferometric gravitational-wave detectors are dynamic instruments. Changing gravitational-wave strains influence the trajectories of null geodesics and therefore modify the interferometric response. …”
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First Search for Nontensorial Gravitational Waves from Known Pulsars
Published 2018“…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 theory may, in principle, predict waves with up to six different polarizations. …”
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Characterization of binary black holes by heterogeneous gravitational-wave networks
Published 2018“…Gravitational waves detected by advanced ground-based detectors have allowed studying the Universe in a way which is fully complementary to electromagnetic observations. …”
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Detecting stellar lensing of gravitational waves with ground-based observatories
Published 2018“…We investigate the ability of ground-based gravitational-wave observatories to detect gravitational-wave lensing events caused by stellar mass lenses. …”
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Characterization of low-significance gravitational-wave compact binary sources
Published 2019“…Advanced LIGO and Virgo have so far detected gravitational waves from 10 binary black hole mergers (BBH) and 1 binary neutron star merger (BNS). …”
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A gravitational-wave standard siren measurement of the Hubble constant
Published 2019“…On 17 August 2017, the Advanced LIGO and Virgo detectors observed the gravitational-wave event GW170817-a strong signal from the merger of a binary neutron-star system. …”
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Machine-learning nonstationary noise out of gravitational-wave detectors
Published 2020“…Keywords: Gravitational wave detection; meteorology; gravitational waves…”
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Use of gravitational waves to probe the formation channels of compact binaries
Published 2021“…With the discovery of the binary black hole coalescences GW150914 and GW151226, the era of gravitational-wave astrophysics has started. Gravitational-wave signals emitted by compact binary coalescences will be detected in large number by LIGO and Virgo in the coming months and years. …”
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Directed search for continuous gravitational waves from the Galactic center
Published 2014“…No gravitational waves were detected. The 90% confidence upper limits on the gravitational wave amplitude of sources at the Galactic center are ~3.35 × 10[superscript −25] for frequencies near 150 Hz. …”
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