Results 41 to 50 of about 192,533 (186)
European Physical Journal C: Particles and Fields, 2019 We study the gravitational deflection of relativistic massive particles by Janis–Newman–Winicour (JNW) spacetimes (also known as a rotating source with a surface-like naked singularity), and a rotating Kerr-like wormholes.
Kimet Jusufi +3 more
doaj +1 more source
Weak Deflection Angle and Shadow by Tidal Charged Black Hole
Universe, 2021 In this article, we calculate the deflection angle of a tidal charged black hole (TCBH) in weak field limits. First, we obtain the Gaussian optical curvature and then apply the Gauss–Bonnet theorem on it.
Wajiha Javed, Ali Hamza, Ali Övgün
doaj +1 more source
Determination of Angle of Light Deflection in Higher-Derivative Gravity Theories
, 2017 Gravitational light deflection is known as one of three classical tests of general relativity and the angle of deflection may be computed explicitly using approximate or exact solutions describing the gravitational force generated from a point mass.
Xu, Chenmei, Yang, Yisong
core +1 more source
Regular phantom black hole gravitational lensing [PDF]
, 2013 We study regular and asymptotically flat phantom black holes as gravitational lenses. We obtain the deflection angle in both the weak and the strong deflection limits, from which we calculate the positions, magnifications, and time delays of the images ...
Eiroa, Ernesto F., Sendra, Carlos M.
core +3 more sources
AerospaceTo understand the asymmetric flow of a slender body with low-aspect ratio fins, a wind tunnel experiment was carried out, and the asymmetric flow was observed when the pair of fins had a symmetric deflection angle of 30° at a small angle of attack and ...
Yonghong Li +4 more
doaj +1 more source
Polarization-dependent metalens with flexible and steerable bifocal spots
Results in Physics, 2023 Lenses are an important part of modern optical systems. We propose metalenses with bifocal spots, which realizes the beam focusing with controllable intensity ratio and free deflection of the bifocal spots.
Yuhang Sun +5 more
doaj +1 more source
Gravitational lensing by a black hole with torsion
, 2017 In this paper we have investigated the gravitational lensing in a spherically symmetric spacetime with torsion in the generalized Einstein-Cartan-Kibble-Sciama (ECKS) theory of gravity by considering higher order terms.
Chen, Songbai, Jing, Jiliang, Zhang, Lu
core +1 more source
Light deflection and Gauss–Bonnet theorem: definition of total deflection angle and its applications [PDF]
General Relativity and Gravitation, 2018 In this paper, we re-examine the light deflection in the Schwarzschild and the Schwarzschild-de Sitter spacetime. First, supposing a static and spherically symmetric spacetime, we propose the definition of the total deflection angle $ $ of the light ray by constructing a quadrilateral $ ^4$ on the optical reference geometry ${\cal M}^{\rm opt ...
openaire +2 more sources
Deflection characteristics and influencing factors of projectile oblique impact on concrete targets
AIP AdvancesThe projectile deflects and even ricochets after an oblique impact on the concrete. However, research on the oblique impact of projectiles on concrete targets mainly focuses on oblique penetration and the critical ricochet angle, and there are few ...
Xiangyu Xu +6 more
doaj +1 more source
Stern-Gerlach Effect of Weak-Light Ultraslow Vector Solitons
, 2012 We propose a scheme to exhibit Stern-Gerlach (SG) deflection of high-dimensional vector optical soliton (VOS) at weak-light level in a cold atomic gas via electromagnetically induced transparency.
Hang, Chao, Huang, Guoxiang
core +1 more source