Gravitational lensing in braneworld gravity: formalism and applications [PDF]
, 2008 In this article, we develop a formalism which is different from the standard lensing scenario and is necessary for understanding lensing by gravitational fields which arise as solutions of the effective Einstein equations on the brane.
Supratik Pal +3 more
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Gravitational Lensing Formalism in a Curved Arc Basis: A Continuous Description of Observables and Degeneracies from the Weak to the Strong Lensing Regime [PDF]
Astrophysical Journal, 2021 Gravitationally lensed curved arcs provide a wealth of information about the underlying lensing distortions. Extracting precise lensing information from extended sources is a key component in many studies aiming to answer fundamental questions about the ...
Simon Birrer
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Simulation Of Gravitational Lensing In The Roulette Formalism [PDF]
European Conference on Modelling and Simulation, 2023 Gravitational lensing refers to the deflection of light by the gravity of celestial bodies, often predominantly composed of dark matter. Seen through a gravitational lens, the images of distant galaxies appear distorted.
Hans Georg Schaathun +5 more
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Complex formalism in the theory of gravitational lensing and the geometry of caustics [PDF]
Bulletin of Taras Shevchenko National University of Kyiv Astronomy, 2021 In the theory of gravitational lensing, the critical curves and caustics of the lens mapping are of particular interest. The most striking features of this phenomenon take place just when the source is in the vicinity of the caustic of the gravitational ...
A. N. Alexandrov
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Gravitational lensing and tunneling of mechanical waves in synthetic curved spacetime [PDF]
Physical Review Research, 2023 Black holes are considered among the most fascinating objects that exist in our universe since in the classical formalism nothing, not even light, can escape from their vicinity due to gravity.
Sayan Jana, Lea Sirota
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Gravitational lensing beyond geometric optics: I. Formalism and observables [PDF]
General Relativity and Gravitation, 2019 The laws of geometric optics and their corrections are derived for scalar, electromagnetic, and gravitational waves propagating in generic curved spacetimes. Local peeling-type results are obtained, where different components of high-frequency fields are
Abraham I. Harte, Abraham I. Harte
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Particle dark matter searches in the anisotropic sky [PDF]
Frontiers in Physics, 2014 Anisotropies in the electromagnetic emission produced by dark matter annihilation or decay in the extragalactic sky are a recent tool in the quest for a particle dark matter evidence.
Nicolao eFornengo +3 more
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Gravitational lensing and shadow by a Schwarzschild-like black hole in metric-affine bumblebee gravity [PDF]
European Physical Journal C: Particles and FieldsIn this paper, we investigate the gravitational lensing effect and the shadow around a Schwarzschild-like black hole in metric-affine bumblebee gravity, which leads to the Lorentz symmetry breaking.
Xiao-Jun Gao
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Exploring Weak Gravitational Lensing Effects by a Regular Black Hole
Spektra: Jurnal Fisika dan AplikasinyaGravitational lensing is one of the physical consequences of Einstein’s general theory of relativity, which has been observationally confirmed. This work aims to study the weak gravitational lensing scenario where the lens is a spherically symmetric ...
A. K. Durrani, H. S. Ramadhan
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Weak gravitational lensing of finite beams [PDF]
Physical Review Letters, 2017 The standard theory of weak gravitational lensing relies on the infinitesimal light beam approximation. In this context, images are distorted by convergence and shear, the respective sources of which unphysically depend on the resolution of the ...
Fleury, Pierre +2 more
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