Results 41 to 50 of about 3,576 (162)

Circular polarization of gravitational waves from early-Universe helical turbulence

open access: yesPhysical Review Research, 2021
We perform direct numerical simulations to compute the net circular polarization of gravitational waves from helical (chiral) turbulent sources in the early Universe for a variety of initial conditions, including driven (stationary) and decaying ...
Tina Kahniashvili   +4 more
doaj   +1 more source

GWSkyNet. II. A Refined Machine-learning Pipeline for Real-time Classification of Public Gravitational Wave Alerts

open access: yesThe Astrophysical Journal
Electromagnetic follow-up observations of gravitational wave events offer critical insights and provide significant scientific gain from this new class of astrophysical transients.
Man Leong Chan   +14 more
doaj   +1 more source

Gravitational waves: Sources, detectors and searches [PDF]

open access: yesProgress in Particle and Nuclear Physics, 2013
Gravitational wave science should transform in this decade from a study of what has not been seen to a full-fledged field of astronomy in which detected signals reveal the nature of cataclysmic events and exotic objects. The LIGO Scientific Collaboration and Virgo Collaboration have recently completed joint data runs of unprecedented sensitivities to ...
openaire   +2 more sources

Indication for a Compact Object Next to a LIGO–Virgo Binary Black Hole Merger

open access: yesThe Astrophysical Journal Letters
The astrophysical origin of binary black hole (BBH) mergers remains uncertain, although many events have been observed by the LIGO–Virgo–KAGRA network. Such mergers are potentially originated in the vicinity of massive black holes (MBHs).
Shu-Cheng Yang   +4 more
doaj   +1 more source

GRAVITATIONAL WAVE HOTSPOTS: RANKING POTENTIAL LOCATIONS OF SINGLE-SOURCE GRAVITATIONAL WAVE EMISSION

open access: yesThe Astrophysical Journal, 2014
9 pages, 9 figures, accepted for submission in ...
Stappers, Benjamin   +7 more
openaire   +4 more sources

Detection Rate of Galaxy Cluster-lensed Stellar Binary Black Hole Mergers by the Third-generation Gravitational-wave Detectors

open access: yesThe Astrophysical Journal
Gravitational waves (GWs) from stellar binary black hole (sBBH) mergers can be strongly gravitational lensed by intervening galaxies/galaxy clusters. Only a few works have investigated cluster-lensed sBBH mergers by adopting oversimplified models, while ...
Zhiwei Chen   +6 more
doaj   +1 more source

The Enhanced Population of Extreme Mass-ratio Inspirals in the LISA Band from Supermassive Black Hole Binaries

open access: yesThe Astrophysical Journal Letters, 2023
Extreme mass-ratio inspirals (EMRIs) take place when a stellar-mass black hole (BH) merges with a supermassive BH (SMBH). The gravitational-wave emission from such an event is expected to be detectable by the future Laser Interferometer Space Antenna ...
Smadar Naoz, Zoltán Haiman
doaj   +1 more source

Collapse of Rotating Very Massive Stellar Cores Leading to a Black Hole and a Massive Disk as a Source of Gravitational Waves

open access: yesThe Astrophysical Journal
We derive models of rotating very massive stellar cores with mass ≈10 ^2 –10 ^4 M _⊙ that are marginally stable to the pair-unstable collapse, assuming that the core is isentropic and composed primarily of oxygen.
Masaru Shibata, Sho Fujibayashi
doaj   +1 more source

Measuring Mass and Radius of the Maximum-mass Nonrotating Neutron Star

open access: yesThe Astrophysical Journal, 2023
The mass ( M _TOV ) and radius ( R _TOV ) of the maximum-mass nonrotating neutron star (NS) play a crucial role in constraining the elusive equation of state of cold dense matter and in predicting the fate of remnants from binary neutron star (BNS ...
Shao-Peng Tang   +4 more
doaj   +1 more source

Testing the Nature of GW200105 by Probing the Frequency Evolution of Eccentricity

open access: yesThe Astrophysical Journal
GW200105 is a compact binary coalescence event, consisting of a neutron star and a black hole, observed in LIGO–Virgo–KAGRA’s third observing run.
Avinash Tiwari   +3 more
doaj   +1 more source

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