Results 1 to 10 of about 32,266 (262)
Searches for continuous-wave gravitational radiation
Living Reviews in Relativity, 2023 Now that detection of gravitational-wave signals from the coalescence of extra-galactic compact binary star mergers has become nearly routine, it is intriguing to consider other potential gravitational-wave signatures.
K Riles
exaly +2 more sources
Effect of Medium on Fundamental Interactions in Gravity and Condensed Matter
Frontiers in Physics, 2022 Recently, it was shown that the gravitational field undergoes exponential cutoff at large cosmological scales due to the presence of background matter. In this article, we demonstrate that there is a close mathematical analogy between this effect and the
Alexander Zhuk +4 more
doaj +1 more source
Effect of the Cubic Torus Topology on Cosmological Perturbations
Universe, 2021 We study the effect of the cubic torus topology of the Universe on scalar cosmological perturbations which define the gravitational potential. We obtain three alternative forms of the solution for both the gravitational potential produced by point-like ...
Maxim Eingorn +4 more
doaj +1 more source
Gravitational Interaction in the Chimney Lattice Universe
Universe, 2021 We investigate the influence of the chimney topology T×T×R of the Universe on the gravitational potential and force that are generated by point-like massive bodies. We obtain three distinct expressions for the solutions.
Maxim Eingorn +4 more
doaj +1 more source
Remote Sensing, 2023 We introduce an approach for the direct measurement of the gravitational potential (GP) along the trajectory of a satellite, with a specific focus on Low-Earth Orbit (LEO) satellites.
Ziyu Shen +8 more
doaj +1 more source
An alternative mobility & transportation that uses gravity for the colonization of the Moon [PDF]
Revista Brasileira de Ensino de Física, 2020 It is well known that hypothetical tunnels net within the Earth is usually considered as an illustration in a gravitation course for undergraduate students.
M.A. De Andrade +2 more
doaj +1 more source
Gravitational positivity bounds on scalar potentials [PDF]
Physical Review D, 2021 We derive constraints on scalar field theories coupled to gravity by using recently developed positivity bounds in the presence of gravity. It is found that a canonically-normalized real scalar cannot have an arbitrarily flat potential unless some new physics enters well below the Planck scale.
Toshifumi Noumi, Junsei Tokuda
openaire +2 more sources
Resonances in Nonaxisymmetric Gravitational Potentials [PDF]
The Astronomical Journal, 2020 Abstract We study sectoral resonances of the form jκ = m(n − Ω) around a nonaxisymmetric body with spin rate Ω, where κ and n are the epicyclic frequency and mean motion of a particle, respectively, where j > 0 and m (<0 or >0) are integers, j being the order of the resonance. This describes n/Ω ∼ m/(m − j) resonances inside and
openaire +3 more sources
Potential Gravitational Wave Signatures of Quantum Gravity [PDF]
Physical Review Letters, 2021 We show that gravitational-wave astronomy has the potential to inform us on quantum aspects of black holes. Based on Bekenstein's quantization, we find that black hole area discretization could impart observable imprints to the gravitational-wave signal from a pair of merging black holes, affecting their absorption properties during inspiral and their ...
Ivan Agullo +4 more
openaire +4 more sources
Chiral gravitational effect in time-dependent backgrounds
Journal of High Energy Physics, 2021 Gravitational counterpart of the chiral magnetic effect, which is referred as the chiral gravitational effect, can also be of interest in a cosmological setup.
Kohei Kamada +2 more
doaj +1 more source