Results 21 to 30 of about 201,686 (344)

Multipole expansion of gravitational waves: from harmonic to Bondi coordinates

open access: yesJournal of High Energy Physics, 2021
We transform the metric of an isolated matter source in the multipolar post-Minkowskian approximation from harmonic (de Donder) coordinates to radiative Newman-Unti (NU) coordinates.
Luc Blanchet   +4 more
doaj   +1 more source

Thermal Gravitational Waves [PDF]

open access: yesThe Open Astronomy Journal, 2011
20 pages, 57 ...
Kenath Arun, C. Sivaram
openaire   +3 more sources

Are there echoes of gravitational waves?

open access: yesInternational Journal of Modern Physics D, 2022
In several approaches to evading the information paradox, the semiclassical black hole is replaced by an Exotic Compact Object (ECO). It has been conjectured that gravitational waves emitted by the merger of ECOs can reflect off the ECOs and produce a detectable ‘echo’.
Guo, Bin, Mathur, Samir D.
openaire   +2 more sources

The gravitational wave rocket [PDF]

open access: yesClassical and Quantum Gravity, 1997
10 pages ...
M S Piper, W B Bonnor
openaire   +5 more sources

Relic gravitational waves [PDF]

open access: yesClassical and Quantum Gravity, 1996
The next generation of gravitational wave detectors holds out the prospect of detecting a stochastic gravitational background generated in the very early universe. In this article, we review the various cosmological processes which can lead to such a background, including quantum fluctuations during inflation, bubble collisions in a first-order phase ...
E. P. S. Shellard, Richard A. Battye
openaire   +4 more sources

Gyroscopic gravitational memory

open access: yesJournal of High Energy Physics, 2023
We study the motion of a gyroscope located far away from an isolated gravitational source in an asymptotically flat spacetime. As seen from a local frame tied to distant stars, the gyroscope precesses when gravitational waves cross its path, resulting in
Ali Seraj, Blagoje Oblak
doaj   +1 more source

Low frequency electromagnetic radiation coming from gravitational waves generated by neutron stars [PDF]

open access: yes, 2017
We investigate the possibility of observing very low frequency (VLF) electromagnetic radiation produced from the vacuum by gravitational waves. We review the calculations leading to the possibility of vacuum conversion of gravitational waves into ...
Gretarsson, Andri   +2 more
core   +3 more sources

Gravitational waves [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 1994
In the last few years there have been a number of significant developments in research towards the detection of gravitational radiation from astronomical objects. The construction of 3 large-scale (3- or 4-km) interferometric detectors has been funded; new high-sensitivity bars are under construction; there is a serious proposal using two ...
openaire   +4 more sources

PULSARS AND GRAVITATIONAL WAVES [PDF]

open access: yesGravitation and Astrophysics, 2010
11 pages, 3 figures; in: Gravitation and Astrophysics (Proceedings of the IX Asia-Pacific International Conference, 29 June - 2 July, 2009, Wuhan), eds. J. Luo, Z. B. Zhou, H. C. Yeh, and J. P.
Kejia Lee, Guojun Qiao, Renxin Xu
openaire   +3 more sources

Standard Model predictions for lepton flavour universality ratios of inclusive semileptonic B decays

open access: yesJournal of High Energy Physics, 2022
We present Standard Model predictions for lepton flavour universality ratios of inclusive B → X(c) ℓ ν ¯ ℓ $$ \ell {\overline{\nu}}_{\ell } $$ . For the ℓ = μ, e, these ratios are very close to unity as expected.
Muslem Rahimi, K. Keri Vos
doaj   +1 more source

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