Results 51 to 60 of about 2,732,923 (363)
Cosmological backgrounds of gravitational waves [PDF]
Classical and quantum gravity, 2018 Gravitational waves (GWs) have a great potential to probe cosmology. We review early universe sources that can lead to cosmological backgrounds of GWs.
C. Caprini, Daniel G. Figueroa
semanticscholar +1 more source
Gravitational waves at their own gravitational speed [PDF]
International Journal of Modern Physics D, 2018 Gravitational waves propagate at the speed of light in general relativity, because of their special relativistic basis. However, light propagation is linked to the electromagnetic phenomena, with the permittivity and permeability constants as the determining factors.
C. S. Unnikrishnan, George T. Gillies
openaire +3 more sources
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
Black holes, gravitational waves and fundamental physics: a roadmap [PDF]
Classical and quantum gravity, 2018 The grand challenges of contemporary fundamental physics—dark matter, dark energy, vacuum energy, inflation and early universe cosmology, singularities and the hierarchy problem—all involve gravity as a key component.
L. Barack +207 more
semanticscholar +1 more source
GRAVITATIONAL WAVES IN THE HYPERSPACE? [PDF]
Modern Physics Letters A, 2009 In the framework of the debate on high-frequency gravitational waves (GWs), after a review of GWs in standard General Relativity, which is due for completness, the possibility of merging such a traditional analysis with the hyperspace formalism that has been recently introduced in some papers in the literature, with the goal of a better understanding ...
Christian Corda +2 more
openaire +3 more sources
The effect of the gravitational constant variation on the propagation of gravitational waves [PDF]
, 2023 Since the first detection of gravitational waves, they have been used to investigate various fundamental problems, including the variation of physical constants. Regarding the gravitational constant, previous works focused on the effect of the gravitational constant variation on the gravitational wave generation.
arxiv +1 more source
Astronomische Nachrichten, Volume 343, Issue 9-10, November-December 2022., 2022 Abstract The advent of ultra‐precise photometry space missions enables the possibility of investigating stellar interiors with mixed modes. The structural variations induced by the discontinuity of the chemical composition left behind during the first dredge–up is an important feature in the stellar mid‐layers located between the hydrogen‐burning shell
Chen Jiang
wiley +1 more source
Imprint of primordial gravitational wave with extremely low frequency on gravitational lens system [PDF]
, 2022 Primordial gravitational waves with extremely low frequency are expected to origin from inflation in the early Universe. The detection of such kind of gravitational waves is of great significance to verify the inflationary theory and determine the energy scale of inflation.
arxiv +1 more source
A cosmological signature of the SM Higgs instability: gravitational waves [PDF]
Journal of Cosmology and Astroparticle Physics, 2018 A fundamental property of the Standard Model is that the Higgs potential becomes unstable at large values of the Higgs field. For the current central values of the Higgs and top masses, the instability scale is about 1011 GeV and therefore not accessible
J. Espinosa, Davide Racco, A. Riotto
semanticscholar +1 more source
Detection of gravitational waves by light perturbation
European Physical Journal C: Particles and Fields, 2021 Light undergoes perturbation as gravitational waves pass by. This is shown by solving Maxwell’s equations in a spacetime with gravitational waves; a solution exhibits a perturbation due to gravitational waves.
Dong-Hoon Kim, Chan Park
doaj +1 more source