A. Perego

Upper Limits on the Isotropic Gravitational-Wave Background from the first part of LIGO, Virgo, and KAGRA's fourth Observing Run

The LIGO Scientific Collaboration, the KAGRA Collaboration, Adrian Abac, I. Abouelfettouh et autres

We present results from the search for an isotropic gravitational-wave background using Advanced LIGO and Advanced Virgo data from O1 through O4a, the first part of the fourth observing run. This background is the accumulated signal from unresolved sources throughout cosmic history …

All-sky search for gravitational wave emission from scalar boson clouds around spinning black holes in LIGO O3 data

R. Abbott, H. Abe, F. Acernese, K. Ackley et autres

This paper describes the first all-sky search for long-duration, quasimonochromatic gravitational-wave signals emitted by ultralight scalar boson clouds around spinning black holes using data from the third observing run of Advanced LIGO. We analyze the frequency range from 20 to 610 Hz, …

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All-sky search for short gravitational-wave bursts in the third Advanced LIGO and Advanced Virgo run

R. Abbott, T. D. Abbott, F. Acernese, K. Ackley et autres

This paper presents the results of a search for generic short-duration gravitational-wave transients in data from the third observing run of Advanced LIGO and Advanced Virgo. Transients with durations of milliseconds to a few seconds in the 24--4096 Hz frequency band are …

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All-sky search for gravitational wave emission from scalar boson clouds around spinning black holes in LIGO O3 data

The LIGO Scientific Collaboration, the KAGRA Collaboration, R. Abbott, H. Abe et autres

This paper describes the first all-sky search for long-duration, quasi-monochromatic gravitational-wave signals emitted by ultralight scalar boson clouds around spinning black holes using data from the third observing run of Advanced LIGO. We analyze the frequency range from 20~Hz to 610~Hz, over …

Search for intermediate-mass black hole binaries in the third observing run of Advanced LIGO and Advanced Virgo

R. Abbott, T. D. Abbott, F. Acernese, K. Ackley et autres

Intermediate-mass black holes (IMBHs) span the approximate mass range 100−105 M⊙, between black holes (BHs) that formed by stellar collapse and the supermassive BHs at the centers of galaxies. Mergers of IMBH binaries are the most energetic gravitational-wave sources accessible by the …

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Population of Merging Compact Binaries Inferred Using Gravitational Waves through GWTC-3

The LIGO Scientific Collaboration, R. Abbott, T. D. Abbott, F. Acernese et autres

Population of Merging Compact Binaries Inferred Using Gravitational Waves through GWTC-3

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Search for anisotropic gravitational-wave backgrounds using data from Advanced LIGO and Advanced Virgo’s first three observing runs

R. Abbott, T. D. Abbott, S. Abraham, F. Acernese et autres

We report results from searches for anisotropic stochastic gravitational-wave backgrounds using data from the first three observing runs of the Advanced LIGO and Advanced Virgo detectors. For the first time, we include Virgo data in our analysis and run our search with …

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Constraints on Cosmic Strings Using Data from the Third Advanced LIGO–Virgo Observing Run

R. Abbott, T. D. Abbott, S. Abraham, F. Acernese et autres

We search for gravitational-wave signals produced by cosmic strings in the Advanced LIGO and Virgo full O3 dataset. Search results are presented for gravitational waves produced by cosmic string loop features such as cusps, kinks, and, for the first time, kink-kink collisions. …

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Optically targeted search for gravitational waves emitted by core-collapse supernovae during the first and second observing runs of advanced LIGO and advanced Virgo

B. P. Abbott, R. Abbott, T. D. Abbott, S. Abraham et autres

We present the results from a search for gravitational-wave transients associated with core-collapse supernovae observed within a source distance of approximately 20 Mpc during the first and second observing runs of Advanced LIGO and Advanced Virgo. No significant gravitational-wave candidate was detected. …

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Properties and Astrophysical Implications of the 150 M Binary Black Hole Merger GW190521

R. Abbott, T. Abbott, S. Abraham, F. Acernese et autres

The gravitational-wave signal GW190521 is consistent with a binary black hole merger source at redshift 0.8 with unusually high component masses, $85^{+21}_{-14}\\,M_{\\odot}$ and $66^{+17}_{-18}\\,M_{\\odot}$, compared to previously reported events, and shows mild evidence for spin-induced orbital precession. The primary falls in the …

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