Gravitational lensing effect in traversable wormholes
Sign Up to like & getrecommendations! Published in 2021 at "Annals of Physics"
DOI: 10.1016/j.aop.2021.168460
Abstract: Abstract The present paper is intended for studying the effect of strong gravitational lensing in the context of charged wormhole. To study this effect, the conditions determining the existence of photon spheres at and outside… read more here.
Keywords: photon spheres; effect; lensing effect; gravitational lensing ... See more keywords
Motion and collision of particles near Plebanski-Demianski black hole: Shadow and gravitational lensing
Sign Up to like & getrecommendations! Published in 2020 at "Chinese Journal of Physics"
DOI: 10.1016/j.cjph.2020.09.037
Abstract: Abstract Here we consider accelerating and rotating charged Plebanski-Demianski (PD) class of black hole metric as a particle accelerator. We obtain the geodesic motions (timelike, null and spacelike) of particles in a non-equatorial plane around… read more here.
Keywords: plebanski demianski; black hole; hole; hole shadow ... See more keywords
Gravitational Lensing and Dynamics (GLaD): combined analysis to unveil properties of high-redshift galaxies
Sign Up to like & getrecommendations! Published in 2020 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/202037929
Abstract: The dynamical modelling of integral field unit (IFU) stellar kinematics is a powerful tool to unveil the dynamical structure and mass build-up of galaxies in the local Universe, while gravitational lensing is nature’s cosmic telescope… read more here.
Keywords: high redshift; mass; redshift galaxies; properties high ... See more keywords
Gravitational lensing, by S. Dodelson
Sign Up to like & getrecommendations! Published in 2017 at "Contemporary Physics"
DOI: 10.1080/00107514.2017.1371230
Abstract: That light can be deflected by gravity is one of the most fundamental phenomena in nature. Gravitational lensing, as it is called, is one of the celebrated outcomes of relativity that readers almos... read more here.
Keywords: gravitational lensing; lensing dodelson;
Ray-tracing log-normal simulation for weak gravitational lensing: application to the cross-correlation with galaxies
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Cosmology and Astroparticle Physics"
DOI: 10.1088/1475-7516/2021/03/095
Abstract: We present an algorithm to self-consistently generate mock weak gravitational lensing convergence fields and galaxy distributions in redshift space. We generate three-dimensional cosmic density fields that follow a log-normal distribution, and ray-trace them to produce… read more here.
Keywords: ray tracing; log normal; cross; cross correlation ... See more keywords
Onset of chaotic gravitational lensing in non-Kerr rotating black holes with quadrupole mass moment
Sign Up to like & getrecommendations! Published in 2023 at "Chinese Physics C"
DOI: 10.1088/1674-1137/acd83e
Abstract: In the electromagnetic channel, chaotic gravitational lensing is a peculiar phenomenon in strong gravitational lensing. In this work, we analyze the properties and emergence of chaotic gravitational lensing in the Manko-Novikov black hole spacetime. Aiming… read more here.
Keywords: physics; chaotic gravitational; onset chaotic; lensing non ... See more keywords
What does strong gravitational lensing? The mass and redshift distribution of high-magnification lenses
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1429
Abstract: Many distant objects can only be detected, or become more scientifically valuable, if they have been highly magnified by strong gravitational lensing. We use eagle and bahamas, two recent cosmological hydrodynamical simulations, to predict the… read more here.
Keywords: gravitational lensing; lensing; strong gravitational; magnification ... See more keywords
Exotic image formation in strong gravitational lensing by clusters of galaxies – I. Cross-section
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stab577
Abstract: In a recent paper, we have discussed the higher order singularities in gravitational lensing. We have shown that a singularity map, comprising A3- lines and unstable (point) singularities (A4 and D4), is a compact representation… read more here.
Keywords: image formation; gravitational lensing; point; point singularities ... See more keywords
Gravitational lensing by ring-like structures
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stw2840
Abstract: We study a class of gravitational lensing systems consisting of an inclined ring/belt, with and without an added point mass at the centre. We show that a common feature of such systems are so-called "pseudo-caustics",… read more here.
Keywords: pseudo caustics; lensing ring; like structures; ring belt ... See more keywords
Constraints on a possible evolution of mass density power-law index in strong gravitational lensing from cosmological data
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stx1791
Abstract: In this work, by using strong gravitational lensing (SGL) observations along with Type Ia Supernovae (Union2.1) and gamma ray burst data (GRBs), we propose a new method to study a possible redshift evolution of $\gamma(z)$,… read more here.
Keywords: strong gravitational; evolution; mass density; gamma gamma ... See more keywords
The galaxy-subhalo connection in low-redshift galaxy clusters from weak gravitational lensing
Sign Up to like & getrecommendations! Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/sty1161
Abstract: We measure the gravitational lensing signal around satellite galaxies in a sample of galaxy clusters at $z read more here.
Keywords: galaxy; stellar mass; mass; galaxy clusters ... See more keywords