Results 31 to 40 of about 64,982 (304)

Gravitational Lensing of Acoustic Charged Black Holes

open access: yesThe Astrophysical Journal, 2023
We study the gravitational lensing of acoustic charged black holes in strong and weak field limit approximations. For this purpose, we first numerically obtain the deflection limit coefficients and deflection angle in the strong field limit.
Niyaz Uddin Molla, Ujjal Debnath
doaj   +1 more source

Toward an Optimal Reconstruction of the Shear Field with PDF-folding

open access: yesThe Astrophysical Journal, 2023
Weak lensing provides a direct way of mapping the density distribution in the Universe. To reconstruct the density field from the shear catalog, an important step is to build the shear field from the shear catalog, which can be quite nontrivial due to ...
Haoran Wang   +3 more
doaj   +1 more source

Weak Gravitational Lensing around Bardeen Black Hole with a String Cloud in the Presence of Plasma

open access: yesSymmetry, 2023
The effect of spacetime curvature on optical properties may provide an opportunity to suggest new tests for gravity theories. In this paper, we investigated gravitational weak lensing around a Bardeen black hole with the string clouds parameter.
Farruh Atamurotov   +4 more
semanticscholar   +1 more source

A Weak Gravitational Lensing Analysis of Abell 2390 [PDF]

open access: greenThe Astrophysical Journal, 1996
14 pages, latex file. Postscript file and one additional figure are available at ftp://magicbean.berkeley.edu/pub/squires/a2390/massandlight.ps ...
G. Squires   +4 more
openalex   +4 more sources

Testing Velocity-field Lensing on IllustrisTNG Galaxies

open access: yesThe Astrophysical Journal, 2023
Weak gravitational lensing shear could be measured far more precisely if information about unlensed attributes of source galaxies were available. Disk galaxy velocity fields supply such information, at least in principle, with idealized models predicting
Jean Donet, David Wittman
doaj   +1 more source

KiDS-450: cosmological parameter constraints from tomographic weak gravitational lensing [PDF]

open access: yes, 2016
We present cosmological parameter constraints from a tomographic weak gravitational lensing analysis of ~450deg$^2$ of imaging data from the Kilo Degree Survey (KiDS).
H. Hildebrandt   +35 more
semanticscholar   +1 more source

KiDS-1000 methodology: Modelling and inference for joint weak gravitational lensing and spectroscopic galaxy clustering analysis [PDF]

open access: yesAstronomy & Astrophysics, 2020
We present the methodology for a joint cosmological analysis of weak gravitational lensing from the fourth data release of the ESO Kilo-Degree Survey (KiDS-1000) and galaxy clustering from the partially overlapping Baryon Oscillation Spectroscopic Survey
B. Joachimi   +26 more
semanticscholar   +1 more source

KiDS-1000 catalogue: Weak gravitational lensing shear measurements [PDF]

open access: yesAstronomy & Astrophysics, 2020
We present weak lensing shear catalogues from the fourth data release of the Kilo-Degree Survey, KiDS-1000, spanning 1006 square degrees of deep and high-resolution imaging.
B. Giblin   +21 more
semanticscholar   +1 more source

Simulations of weak gravitational lensing [PDF]

open access: yesAstroparticle Physics, 2004
15 pages, 9 figures, Astroparticle Physics in ...
Martin White, Chris Vale
openaire   +3 more sources

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