Results 11 to 20 of about 29,160 (315)

Storage Rings and Gravitational Waves: Summary and Outlook [PDF]

, 2021
We report some highlights from the ARIES APEC workshop on ``Storage Rings and Gravitational Waves'' (SRGW2021), held in virtual space from 2 February to 18 March 2021, and sketch a tentative landscape for using accelerators and associated technologies
S. Rao, S. Y. Lee, K. Oide, P. Chen, G. Franchetti, J. Liske, M. Brüggen, O. Buchmueller, A. Ivanov, A. P. Kobushkin, R. T. D'Agnolo, S. Ellis, M. Wellenzohn, M. Zanetti, J. R. Ellis, J. Wenninger, A. Berlin, J. M. Jowett, F. Zimmermann, R. Deng   +19 more
core   +1 more source

The Poincaré and BMS flux-balance laws with application to binary systems

Journal of High Energy Physics, 2020
Asymptotically flat spacetimes admit both supertranslations and Lorentz transformations as asymptotic symmetries. Furthermore, they admit super-Lorentz transformations, namely superrotations and superboosts, as outer symmetries associated with super ...
Geoffrey Compère, Roberto Oliveri, Ali Seraj   +2 more
doaj   +1 more source

Metric reconstruction from celestial multipoles

Journal of High Energy Physics, 2022
The most general vacuum solution to Einstein’s field equations with no incoming radiation can be constructed perturbatively from two infinite sets of canonical multipole moments, which are found to be mapped into each other under gravitational electric ...
Geoffrey Compère, Roberto Oliveri, Ali Seraj   +2 more
doaj   +1 more source

Pseudoplane-wave gravitational calibrator for gravitational wave observatories

Physical Review D, 2023
The precisions of existing gravitational calibrators for gravitational wave observatories are limited by their dependence on the relative position between the calibrators and the observatory's test masses. Here we present a novel geometry consisting of four quadrupole rotors placed at the vertices of a rectangle centered on the test mass.
M. P. Ross, J. H. Gundlach, E. G. Adelberger, C. M. Weller, E. A. Shaw, C. Gettings, J. Kissel, T. Mistry, L. Datrier, E. Daw, M. Hendry   +10 more
openaire   +3 more sources

Gravitational breathing memory and dual symmetries

Journal of High Energy Physics, 2021
Brans-Dicke theory contains an additional propagating mode which causes homogeneous expansion and contraction of test bodies in transverse directions.
Ali Seraj
doaj   +1 more source

Gravitational waves in the nonsymmetric gravitational theory [PDF]

Physics Letters A, 1993
We prove that the flux of gravitational radiation from an isolated source in the Nonsymmetric Gravitational Theory is identical to that found in Einstein's General Theory of Relativity.
Cornish, N. J., Moffat, J. W., Tatarski, D. C.   +2 more
openaire   +2 more sources

Evanescent gravitational waves [PDF]

Physical 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, Lim, Eugene A., Rodríguez-Fortuño, Francisco J.   +2 more
openaire   +4 more sources

Multipole expansion of gravitational waves: from harmonic to Bondi coordinates

Journal 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, Geoffrey Compère, Guillaume Faye, Roberto Oliveri, Ali Seraj   +4 more
doaj   +1 more source

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

, 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

Gravitational waves [PDF]

Nuclear 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