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Published in 2017 at "General Relativity and Gravitation"
DOI: 10.1007/s10714-018-2368-2
Abstract: 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 $$\alpha $$α…
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Keywords:
deflection;
total deflection;
geometry;
mathscr ... See more keywords
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Published in 2018 at "Vehicle System Dynamics"
DOI: 10.1080/00423114.2017.1413198
Abstract: ABSTRACT A mechanical model of the coupler and draft gear was established to study the mechanism during an intercity train collision. The model includes four rigid bodies, one spherical joint, two nonlinear torsion spring units…
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Keywords:
collision;
train;
coupler;
deflection angle ... See more keywords
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Published in 2021 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2021/08/028
Abstract: Assuming a static and spherically symmetric spacetime, we propose a novel concept of the total deflection angle of a light ray in terms of the optical geometry which is the Riemannian geometry experienced by the…
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Keywords:
total deflection;
geometry;
light ray;
deflection angle ... See more keywords
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Published in 2021 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2021/10/062
Abstract: We calculate the deflection angle, as well as the positions and magnifications of the lensed images, in the case of covariant f(T) gravity. We first extract the spherically symmetric solutions for both the pure-tetrad and…
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Keywords:
covariant gravity;
deflection;
general relativity;
signature ... See more keywords
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Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.100.044052
Abstract: In this paper, we are interested in a model of exact asymptotically flat charged hairy black holes in the background of a dilaton potential. We study the weak gravitational lensing in the spacetime of a…
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Keywords:
deflection angle;
hairy black;
black holes;
dilaton ... See more keywords
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Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.101.104032
Abstract: The gravitational deflection angle of light for an observer and source at finite distance from a lens object has been studied by Ishihara et al. [Phys. Rev. D, 94, 084015 (2016)], based on the Gauss-Bonnet…
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Keywords:
deflection;
definition observer;
angle light;
angle ... See more keywords
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Published in 2018 at "Physical Review D"
DOI: 10.1103/physrevd.97.064030
Abstract: In this article, we report the effect of the cosmological constant and the internal density energy of the cosmic string in the deflection angle of light in the spacetime of a rotating cosmic string with…
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Keywords:
cosmic string;
rotating cosmic;
string;
deflection angle ... See more keywords
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Published in 2022 at "Physical review. E"
DOI: 10.1103/physreve.105.015302
Abstract: In order to predict the postcollision velocities in the binary collision, one needs the deflection angle given by the solution of the trajectory equation of classical mechanics. In the direct simulation Monte Carlo, it has…
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Keywords:
deflection;
direct simulation;
deflection angle;
simulation ... See more keywords
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Published in 2021 at "IEEE Access"
DOI: 10.1109/access.2021.3105960
Abstract: The paper deals with a minimum potential energy algorithm considering the maximum deflection angle of joint (MPE-MDA algorithm) for three key factors including the maximum deflection angle of the joint, the total length of the…
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Keywords:
algorithm;
deflection;
path;
maximum deflection ... See more keywords
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Published in 2022 at "Optics express"
DOI: 10.1364/oe.454137
Abstract: Directional emission source is one of the key components for multiple-view three-dimensional display. It is hard to achieve high efficiency and large deflection angle direction sources via geometric optics due to the weak confinement of…
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Keywords:
deflection;
large deflection;
optics;
deflection angle ... See more keywords
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Published in 2019 at "Chinese Physics C"
DOI: 10.20944/preprints201908.0156.v1
Abstract: We study the light rays in a static and spherically symmetric gravitational field of null aether theory (NAT). To this end, we employ the Gauss-Bonnet theorem to compute the deflection angle by a NAT black…
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Keywords:
field;
effect aether;
deflection angle;