Results 31 to 40 of about 1,462 (252)
Strong Gravitational-wave Lensing Posterior Odds
The Astrophysical JournalLike light, gravitational waves are gravitationally lensed by intervening massive astrophysical objects—such as galaxies, clusters, black holes, and stars—resulting in a variety of potentially observable gravitational-wave lensing signatures.
Otto A. Hannuksela +6 more
doaj +1 more source
Universe, 2023 In the present paper, strong deflection gravitational lensing is studied in a conformal gravity black hole. With the help of geometric optics limits, we have formulated the light cone conditions for the photons coupled to the Weyl tensor in a conformal ...
Ghulam Abbas +3 more
doaj +1 more source
Advanced Materials Technologies, EarlyView.Microstructures fabricated by two‐beam DLIP combining spatial‐period and roughness gradients are fabricated to enhance directional transport of water droplets. The coupled gradients increase transport distance by 160% and strongly suppress motion against the gradient, demonstrating an effective strategy for controlled droplet manipulation.
Tianhao Wu +3 more
wiley +1 more source
Einstein beams and the diffractive aspect of gravitationally-lensed light
New Journal of Physics, 2023 The study of light lensed by cosmic matter has yielded much information about astrophysical questions. Observations are explained using geometrical optics following a ray-based description of light.
V Rodríguez-Fajardo +4 more
doaj +1 more source
Shadow and Weak Deflection Angle of a Black Hole in Nonlocal Gravity
Universe, 2022 Black hole shadow and gravitational lensing play important roles in testing gravitational theories in the strong field regime. As the first-order modifications from quantum gravity, the nonlocality can be manifested by black hole shadow and gravitational
Qi-Ming Fu +4 more
doaj +1 more source
Optical Manipulation of Whispering Gallery Mode Microlasers for Controlled Cellular Delivery
Advanced Optical Materials, EarlyView.Optically trapped whispering‑gallery microlasers are precisely positioned onto non‐phagocytic mammalian cells to report local refractive‑index changes in real time. Time‑dependent wavelength shifts reveal successive stages from membrane contact to internalization.
Soraya Caixeiro +3 more
wiley +1 more source
Highlights of Astronomy, 1992 AbstractAtmospheric lensing effects deform our view of distant objects; similarly, without any doubt, gravitational lensing perturbs our view of the distant Universe and affects our physical understanding of various classes of extragalactic objects.
Sjur Refsdal, Jean Surdej
openaire +1 more source
Gravitational Lensing Effects from Models of Loop Quantum Gravity with Rigorous Quantum Parameters
UniverseMany previous works have studied gravitational lensing effects from Loop Quantum Gravity. So far, gravitational lensing effects from Loop Quantum Gravity have only been studied by choosing large quantum parameters much larger than the Planck scale ...
Haida Li, Xiangdong Zhang
doaj +1 more source
Advanced Optical Materials, EarlyView.The particle with high surface hydrophilicity exhibits strong thermophoretic attraction, as its dense hydration layer enhances the role of interfacial water molecules in determining thermophoretic mobility over other ionic effects. This finding elucidates the mechanism underlying the robust thermophoretic accumulation of Escherichia coli in high ...
Seungyeop Kang +3 more
wiley +1 more source
Time delay of light in the gravitational lensing of supermassive black holes in dark matter halos
European Physical Journal C: Particles and FieldsThe dark matter halo has non-negligible effects on the gravitational lensing of supermassive black hole in the galaxy center. Our work presents a study on the time-delay of light in gravitational lensing of black holes enclosed by dark matter halos.
Chen-Kai Qiao, Ping Su
doaj +1 more source