Results 21 to 30 of about 214,334 (339)

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

Gyroscopic gravitational memory

Journal 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

TrackHHL: A Quantum Computing Algorithm for Track Reconstruction at the LHCb [PDF]

EPJ Web of Conferences
In the future high-luminosity LHC era, high-energy physics experiments face unprecedented computational challenges for event reconstruction. Employing the LHCb vertex locator as a case study we investigate a novel approach for charged particle track ...
Chiotopoulos Xenofon, Lucio Martinez Miriam, Nicotra Davide, de Vries Jacco A., Driessens Kurt, Merk Marcel, Winands Mark H.M.   +6 more
doaj   +1 more source

Using gravitational lenses to detect gravitational waves [PDF]

, 1990
Gravitational lenses could be used to detect gravitational waves, because a gravitational wave affects the travel-time of a light ray. In a gravitational lens, this effect produces time-delays between the different images.
Allen, B.
core   +2 more sources

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

Journal 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

Lunar Gravitational-wave Antenna

The Astrophysical Journal, 2021
Abstract Monitoring of vibrational eigenmodes of an elastic body excited by gravitational waves was one of the first concepts proposed for the detection of gravitational waves. At laboratory scale, these experiments became known as resonant bar detectors first developed by Joseph Weber in the 1960s.
Jan Harms, Filippo Ambrosino, Lorella Angelini, Valentina Braito, Marica Branchesi, Enzo Brocato, Enrico Cappellaro, Eugenio Coccia, Michael Coughlin, Roberto Della Ceca, Massimo Della Valle, Cesare Dionisio, Costanzo Federico, Michelangelo Formisano, Alessandro Frigeri, Aniello Grado, Luca Izzo, Augusto Marcelli, Andrea Maselli, Marco Olivieri, Claudio Pernechele, Andrea Possenti, Samuele Ronchini, Roberto Serafinelli, Paola Severgnini, Maila Agostini, Francesca Badaracco, Alessandro Bertolini, Lorenzo Betti, Marta Maria Civitani, Christophe Collette, Stefano Covino, Simone Dall’Osso, Paolo D’Avanzo, Riccardo DeSalvo, Matteo Di Giovanni, Mauro Focardi, Carlo Giunchi, Joris van Heijningen, Nandita Khetan, Daniele Melini, Giuseppe Mitri, Conor Mow-Lowry, Luca Naponiello, Vladimiro Noce, Gor Oganesyan, Emanuele Pace, Ho Jung Paik, Alessandro Pajewski, Eliana Palazzi, Marco Pallavicini, Giovanni Pareschi, Riccardo Pozzobon, Ashish Sharma, Giorgio Spada, Ruggero Stanga, Gianpiero Tagliaferri, Raffaele Votta   +57 more
openaire   +9 more sources

Simulating angular momentum of gravitational field of a rotating black hole and spin momentum of gravitational waves

Sistemnì Doslìdženâ ta Informacìjnì Tehnologìï, 2021
In this research, we simulated the angular momentum of gravitational field of a rotating black hole and the spin momentum of gravitational waves emitted from the black hole.
Yoshio Matsuki, Petro Bidyuk
doaj   +1 more source

Multiple imaging by gravitational waves [PDF]

, 1997
Gravitational waves act like lenses for the light propagating through them. This phenomenon is described using the vector formalism employed for ordinary gravitational lenses, which was proved to be applicable also to a non-stationary spacetime, with the
Braginsky V. B., Carr B. J., Fakir R., Faraoni V., Frieman J. A., Labeyrie A., Linder E. V., Udalski A., VALERIO FARAONI, Winterberg F.   +9 more
core   +3 more sources

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

Relative attitude stability analysis of double satellite formation for gravity field exploration in space debris environment

Scientific Reports, 2023
Spacecraft operating in low orbit are at risk of being hit by space debris. In the debris environment, the impact of debris is likely to cause the double satellite formation to exit science mode or even lead to the divergence of the control system, thus ...
Baocai Pan, Yunhe Meng
doaj   +1 more source