Results 21 to 30 of about 9,278 (301)

pygwb: A Python-based Library for Gravitational-wave Background Searches

open access: yesThe Astrophysical Journal, 2023
The collection of gravitational waves (GWs) that are either too weak or too numerous to be individually resolved is commonly referred to as the gravitational-wave background (GWB).
Arianna I. Renzini   +33 more
doaj   +1 more source

Scope Out Multiband Gravitational-Wave Observations of GW190521-Like Binary Black Holes with Space Gravitational Wave Antenna B-DECIGO

open access: yesUniverse, 2021
The gravitational wave event, GW190521, is the most massive binary black hole merger observed by ground-based gravitational wave observatories LIGO/Virgo to date.
Hiroyuki Nakano   +3 more
doaj   +1 more source

Searches for continuous-wave gravitational radiation

open access: yesLiving Reviews in Relativity, 2023
Now that detection of gravitational-wave signals from the coalescence of extra-galactic compact binary star mergers has become nearly routine, it is intriguing to consider other potential gravitational-wave signatures.
Keith Riles
doaj   +1 more source

Gravitational Waves from a Core-Collapse Supernova: Perspectives with Detectors in the Late 2020s and Early 2030s

open access: yesGalaxies, 2022
We studied the detectability and reconstruction of gravitational waves from core-collapse supernova multidimensional models using simulated data from detectors predicted to operate in the late 2020s and early 2030s. We found that the detection range will
Marek Szczepańczyk, Michele Zanolin
doaj   +1 more source

A Search for Gravitational Waves from Perturbed Black Hole Ringdowns in LIGO Data [PDF]

open access: yes, 2008
According to General Relativity a perturbed black hole will return to a stable configuration by the emission of gravitational radiation in a superposition of quasi-normal modes. Such a perturbation will occur due to the coalescence of a black hole binary,
Goggin, Lisa Maria
core   +1 more source

Gravitoastronomy with neutron stars [PDF]

open access: yes, 2004
Recent advances in gravitational wave detectors mean that we can start to make astrophysically important statements about the physics of neutron stars based on observed upper limits to their gravitational luminosity.
Woan, G., Graham Woan
core   +1 more source

Measurement of Thermo-Optic Properties of Thin Film Dielectric Coatings [PDF]

open access: yes, 2013
We have carried out an experiment to test the theory of the thermo-optic response of a dielectric stack mirror coating and to measure parameters of interest in calculating thermo-optic noise. Specifically, we measured the coefficient of thermal expansion
Ogin, Gregory H.
core   +1 more source

Prototype superfluid gravitational wave detector [PDF]

open access: yesPhysical Review D, 2021
We study a cross-shaped cavity filled with superfluid $^4$He as a prototype resonant-mass gravitational wave detector. Using a membrane and a re-entrant microwave cavity as a sensitive optomechanical transducer, we were able to observe the thermally excited high-$Q$ acoustic modes of the helium at 20 mK temperature and achieved a strain sensitivity of $
V. Vadakkumbatt   +5 more
openaire   +2 more sources

Adaptive optics methods in gravitational wave interferometric detectors, a perspective [PDF]

open access: yes, 2018
The performance of present and future gravitational wave detectors is limited by fundamental factors, such as thermal noise, seismic or newtonian noise and quantum nature of light.
Fafone, Viviana   +17 more
core   +1 more source

Observation of a kilogram-scale oscillator near its quantum ground state [PDF]

open access: yes, 2009
We introduce a novel cooling technique capable of approaching the quantum ground state of a kilogram-scale system—an interferometric gravitational wave detector.
Blair, D   +999 more
core   +1 more source

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