Results 31 to 40 of about 2,884,004 (376)

The NANOGrav 12.5 yr Data Set: Search for an Isotropic Stochastic Gravitational-wave Background [PDF]

open access: yesAstrophysical Journal Letters, 2020
We search for an isotropic stochastic gravitational-wave background (GWB) in the 12.5 yr pulsar-timing data set collected by the North American Nanohertz Observatory for Gravitational Waves.
Z. Arzoumanian   +60 more
semanticscholar   +1 more source

Non-Gaussianity and the induced gravitational wave background [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2021
Scalar metric fluctuations generically source a spectrum of gravitational waves at second order in perturbation theory, poising gravitational wave experiments as potentially powerful probes of the small-scale curvature power spectrum.
Peter Adshead   +2 more
semanticscholar   +1 more source

Multi-Physics and Multi-Objective Optimization for Fixing Cubic Fabry–Pérot Cavities Based on Data Learning

open access: yesApplied Sciences, 2023
The Fabry–Pérot (FP) cavity is the essential component of an ultra-stable laser (USL) for gravitational wave detection, which couples multiple physics fields (optical/thermal/mechanical) and requires ultra-high precision.
Hang Zhao   +5 more
doaj   +1 more source

Gravitational Waves from Gravitational Collapse [PDF]

open access: yesLiving Reviews in Relativity, 2003
68 pages including 13 figures; revised version accepted for publication in Living Reviews in Relativity (http://www.livingreviews.org)
Chris L. Fryer, Kimberly C.B. New
openaire   +9 more sources

The Gravitational-wave physics II: Progress [PDF]

open access: yesScience China Physics Mechanics and Astronomy, 2021
It has been a half-decade since the first direct detection of gravitational waves, which signifies the coming of the era of the gravitational-wave astronomy and gravitational-wave cosmology. The increasing number of the detected gravitational-wave events
Ligong Bian   +17 more
semanticscholar   +1 more source

Study on the Effect of Micro-Force Perturbations and Temperature Fluctuation on Interferometer for the Taiji Program

open access: yesSensors, 2023
To increase the interferometric measurement resolution in the Taiji program, we present a noise suppression method in this paper. Taking the specific micro-force perturbation and temperature fluctuation in the Taiji-1 interferometer as an example, we set
Juan Wang   +5 more
doaj   +1 more source

Evanescent gravitational waves [PDF]

open access: yesPhysical Review D, 2020
We describe the properties of evanescent gravitational waves (EGWs)---wave solutions of Einstein equations which decay exponentially in some direction while propagating in another. Evanescent waves are well-known in acoustics and optics and have recently received much attention due to their extraordinary properties such as their transverse spin and ...
Golat, Sebastian   +2 more
openaire   +4 more sources

Pinpointing gravitational waves via astrometric gravitational wave antennas. [PDF]

open access: yesSci Rep
AbstractThe direct detection of gravitational waves by ground-based optical interferometers has opened a new window in astronomy. Besides, the sensitivity of these linear detectors to the direction of arrival of an incoming gravitational wave is limited compared to current prospects of high-precision, space-based, astrometry.
Crosta M   +5 more
europepmc   +5 more sources

GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs [PDF]

open access: yes, 2018
We present the results from three gravitational-wave searches for coalescing compact binaries with component masses above 1$\mathrm{M}_\odot$ during the first and second observing runs of the Advanced gravitational-wave detector network. During the first
The Ligo Scientific Collaboration   +499 more
semanticscholar   +1 more source

Bayesian inference for compact binary coalescences with bilby: validation and application to the first LIGO–Virgo gravitational-wave transient catalogue [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2020
Gravitational waves provide a unique tool for observational astronomy. While the first LIGO–Virgo catalogue of gravitational-wave transients (GWTC-1) contains 11 signals from black hole and neutron star binaries, the number of observations is ...
I. Romero-Shaw   +62 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy