Results 61 to 70 of about 192,533 (186)

The analytical discussion on strong gravitaional lensing for a gravitational source with a $f(R)$ global monopole

, 2015
Here the gravitational lensing in strong field limit of a Schwarzschild black hole with a solid deficit angle owing to global monopole within the context of the $f(R)$ gravity theory is investigated. We obtain the expressions of deflection angle and time
D. Richstone, Hongbo Cheng, I. S. Gradshteyn, Jingyun Man, K. S. Virbhadra, P. Schneider, S. Weinberg   +6 more
core   +1 more source

Gravitational Lensing by Rotating Wormholes

, 2017
In this paper the deflection angle of light by a rotating Teo wormhole spacetime is calculated in the weak limit approximation. We mainly focus on the weak deflection angle by revealing the gravitational lensing as a partially global topological effect ...
Jusufi, Kimet, Övgün, Ali
core   +1 more source

A New Independent Limit on the Cosmological Constant/Dark Energy from the Relativistic Bending of Light by Galaxies and Clusters of Galaxies

, 2008
We derive new limits on the value of the cosmological constant, $\Lambda$, based on the Einstein bending of light by systems where the lens is a distant galaxy or a cluster of galaxies.
Allen, Bartelmann, Bennett, Bodenner, C. Allison, Carroll, Carroll, Darmois, Einstein, Finelli, Freire, Ishak, Islam, Israel, J. Dossett, J. Moldenhauer, Kagramanova, Keeton, Kerr, Knop, Kottler, Krasinski, Limousin, M. Ishak, Mellier, Miralda-Escude, Misner, Padmanabhan, Page, Peebles, Perlmutter, Riess, Riess, Rindler, Rindler, Rindler, Sahni, Schucking, Seljak, Sereno, Sharon, Smail, Smail, Smail, Spergel, Spergel, Tegmark, Turner, Upadhye, W. Rindler, Wald, Weinberg, Wold   +52 more
core   +1 more source

Gravitational lensing in the Kerr-Randers optical geometry

, 2012
A new geometric method to determine the deflection of light in the equatorial plane of the Kerr solution is presented, whose optical geometry is a surface with a Finsler metric of Randers type.
AB Aazami, AR Prasanna, D Bao, G Randers, GW Gibbons, GW Gibbons, H Asada, J Itoh, M. C. Werner, MA Abramowicz, MC Werner, RH Boyer, T Sauer, V Bozza, V Perlick   +14 more
core   +1 more source

Applications of the Gauss-Bonnet theorem to gravitational lensing

, 2008
In this geometrical approach to gravitational lensing theory, we apply the Gauss-Bonnet theorem to the optical metric of a lens, modelled as a static, spherically symmetric, perfect non-relativistic fluid, in the weak deflection limit.
Binney J, G W Gibbons, Gibbons G W Warnick C M, Klingenberg W, M C Werner, Perlick V, Plummer H C, Schneider P, Straumann N   +8 more
core   +1 more source

The perturbative approach for the weak deflection angle [PDF]

The European Physical Journal C, 2020
AbstractBoth null and timelike rays experience trajectory bending in a gravitational field. In this work, we systematically develop a perturbative method to compute the deflection angle of rays with general velocity v in arbitrary static and spherically symmetric spacetimes and in equatorial plane of arbitrary static and axisymmetric spacetimes.
openaire   +3 more sources

Jet vectoring using active switching

Journal of Fluid Science and Technology
Several studies have focused on jet vectoring and mixing enhancement using continuous jets for the secondary flow. In recent years, studies have applied synthetic jets to secondary flows, wherein the driving source can be easily downsized.
Koichi NISHIBE, Gaku YAMASAKI, Taisei SUZUOKA, Kotaro SATO   +3 more
doaj   +1 more source

Gravitational lensing by deformed Horava-Lifshitz black hole in rainbow gravity

Physics Letters B
In this study, we investigate the gravitational lensing effects of deformed Horava-Lifshitz black holes, considering both strong and weak-field limit approximations and incorporating the impact of rainbow functions.
Aniruddha Ghosh, Ujjal Debnath
doaj   +1 more source

Combined Deflection Angle Classification: A Novel Typing System of Adult Femoral Neck Fracture. [PDF]

Orthop Surg, 2023
Zhang Y, Yuan Q, Wei Q, Dong Y, Liu Y, He W, Jing Z, Zhang L, Wang H, Li W.   +9 more
europepmc   +1 more source

Flight-measured X-24A lifting body control surface hinge moments and correlation with wind tunnel predictions [PDF]

Control-surface hinge-moment measurements obtained in the X-24A lifting body flight-test program are compared with results from wind-tunnel tests. The effects of variations in angle of attack, angle of sideslip, rudder bias, rudder deflection, upper-flap
Pearson, G. P. E., Tang, M. H.
core   +1 more source