Results 181 to 190 of about 11,925 (196)

Characterizing the shapes of galaxy clusters using moments of the gravitational lensing shear

Astroparticle Physics, 2005
17 pages, 6 figures; added references, corrected typos, matches published ...
Martin White
exaly   +3 more sources

Weak gravitational lensing in the standard cold dark matter model, using an algorithm for three-dimensional shear [PDF]

Monthly Notices of the Royal Astronomical Society, 1999
We investigate the effects of weak gravitational lensing in the standard Cold Dark Matter cosmology, using an algorithm which evaluates the shear in three dimensions. The algorithm has the advantage of variable softening for the particles, and our method allows the appropriate angular diameter distances to be applied to every evaluation location within
Peter A Thomas
exaly   +3 more sources

Shear and magnification angular power spectra and higher-order moments from weak gravitational lensing [PDF]

Monthly Notices of the Royal Astronomical Society, 2003
Revised in accordance with referee's report; now accepted by ...
Barber, Andrew J., Taylor, A. N.
exaly   +3 more sources

Measuring the three-dimensional shear from simulation data, with applications to weak gravitational lensing [PDF]

Monthly Notices of the Royal Astronomical Society, 1999
22 pages, latex, 11 ...
Couchman, H. M. P., Barber, Andrew J., Thomas, Peter A.   +2 more
exaly   +3 more sources

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Gravitational Lensing: From μ-Lensing to Cosmic Shear Experiments

2005
These notes present the physics of gravitational lensing in various cosmological contexts. The equations and approximations that are commonly used to describe the displacement field or the amplification effects are presented. Several observational applications are discussed. They range from micro-lensing effects to cosmic shear detection that is a weak
exaly   +2 more sources

The impact of higher-order distortions on the precise measurement of weak gravitational lensing shear and flexion

Monthly Notices of the Royal Astronomical Society
In this paper, we investigate the impact of higher-order distortions on the precise measurement of weak gravitational lensing shear and flexion. We begin by defining generalized higher-order distortions and outlining methods for measuring them. Then, using several lens models, we examine how these distortions affect shear and flexion measurements.
Yuki Okura
exaly   +3 more sources

Weak gravitational lensing shear estimation with metacalibration for the Roman High-Latitude Imaging Survey

Monthly Notices of the Royal Astronomical Society, 2023
Masaya Yamamoto, Michael A Troxel, Mike Jarvis   +2 more
exaly  

The intrinsic alignment of galaxies and its impact on weak gravitational lensing in an era of precision cosmology

Physics Reports, 2015
Michael A Troxel, Mustapha Ishak
exaly  

Current status of weak gravitational lensing

New Astronomy Reviews, 2002
Henk Hoekstra
exaly  

Weak gravitational lensing in different cosmologies, using an algorithm for shear in three dimensions

Monthly Notices of the Royal Astronomical Society, 2000
Peter A Thomas, Christopher J Fluke
exaly