R. W. Short

Constraints on ultralight bosons from merging binary and remnant black holes observed during the second and third parts of the fourth LIGO-Virgo-KAGRA observing run

A. Abac, A. Abe, I. Abouelfettouh, F. Acernese et autres

International audience

GWTC-5.0: Tests of General Relativity

A.G Abac, A. Abe, I. Abouelfettouh, F. Acernese et autres

International audience

Updated Upper Limits on the Isotropic Gravitational-Wave Background from LIGO, Virgo, and KAGRA Data through April 2025

A.G Abac, A. Abe, I. Abouelfettouh, F. Acernese et autres

International audience

Updated Upper Limits on the Isotropic Gravitational-Wave Background from LIGO, Virgo, and KAGRA Data through April 2025

the LSST Dark Energy Science Collaboration, A. G. Abac, A. Abe, I. Abouelfettouh et autres

We report results from a search for an isotropic stochastic gravitational-wave background using data collected by the LIGO--Virgo--KAGRA Collaboration. The analysis uses data from the first observing run through April 1, 2025, during the fourth observing run. New frequency-domain cuts are implemented …

Direct Multimodel Dark Matter Search with Gravitational-Wave Interferometers Using Data from the First Part of the Fourth LIGO-Virgo-KAGRA Observing Run

Adrian Abac, I. Abouelfettouh, F. Acernese, K. Ackley et autres

We present a search of data from the first part of the fourth observing run of LIGO-Virgo-KAGRA for three kinds of dark matter—dilatons (spin-0), dark photons (spin-1), and tensor bosons (spin-2)—using three independent methods, each extended to search for all three candidates. …

de, it, gb, au, us, in, fr, be, br, jp, nl, es, mx, kr (code pays fourni par la source)

LIGO A♯♯: Detector Design and Science Prospects Beyond A+

L. Sun, K. Kuns, B Slagmolen, P. Fritschel et autres

We present the LIGO A$^\sharp$ detector concept, an upgrade for the LIGO observatories based on room-temperature interferometers beyond the fifth observing run (O5). Building on the A+ sensitivity, A$^\sharp$ targets broadband sensitivity improvements through heavier test masses, improved suspensions and seismic isolation, …

GWTC-4.0: Constraints on the Cosmic Expansion Rate and Modified Gravitational-wave Propagation

Adrian Abac, I. Abouelfettouh, F. Acernese, K. Ackley et autres

Abstract We analyze data from 142 of the 218 gravitational-wave (GW) sources in the fourth LIGO–Virgo–KAGRA Collaboration (LVK) Gravitational-Wave Transient Catalog (GWTC-4.0) to estimate the Hubble constant H 0 jointly with the population properties of merging compact binaries. We measure the luminosity …

de, it, gb, au, us, in, fr, be, br, jp, nl, es, mx, kr (code pays fourni par la source)

GWTC-5.0: Tests of General Relativity

T K ND TPC collaboration, A. G. Abac, A. Abe, I. Abouelfettouh et autres

The signals from the LIGO-Virgo-KAGRA network of gravitational-wave (GW) detectors allow us to perform sensitive tests of general relativity (GR) in the dynamical and strong-field regime of gravity. We present the results of seven tests of GR using the observed binary signals …

Directional search for persistent gravitational waves: Results from the first part of LIGO-Virgo-KAGRA’s fourth observing run

A.G Abac, I Abouelfettouh, F Acernese, K Ackley et autres

The angular distribution of gravitational-wave power from persistent sources may exhibit anisotropies arising from the large-scale structure of the Universe.This motivates directional searches for astrophysical and cosmological gravitational-wave backgrounds, as well as continuous-wave emitters.We present results of such a search using data …

fr (code pays fourni par la source)

Sub-Torque-Balance Upper Limits on Continuous Gravitational Waves from Scorpius X-1

T K ND TPC collaboration, the Precision Ephemerides for Gravitational-Wave Searches, Project, : et autres

We present the results of a search for continuous gravitational waves from the low-mass X-ray binary Scorpius X-1 using LIGO data from the first part of the fourth LIGO-Virgo-KAGRA observing run. By applying the resampling version of the cross-correlation pipeline to search …

us (code pays fourni par la source)

GWTC-4.0: Population Properties of Merging Compact Binaries

Adrian Abac, I. Abouelfettouh, F. Acernese, K. Ackley et autres

Abstract We detail the population properties of binary neutron star, neutron star–black hole binary, and binary black hole mergers using 158 events from the cumulative Gravitational-Wave Transient Catalog 4.0. The black hole primary mass distribution consists of a power-law-like continuum that steepens …

de, it, gb, au, us, in, be, kr, br, fr, nl, jp, es, mx, hu (code pays fourni par la source)

Open Data from LIGO, Virgo, and KAGRA through the Second Part of the Fourth Observing Run

A. Abac, A. Abe, I. Abouelfettouh, F. Acernese et autres

International audience