Results 11 to 20 of about 206 (178)
THE EFFECT OF ENVIRONMENT ON SHEAR IN STRONG GRAVITATIONAL LENSES [PDF]
The Astrophysical Journal, 2010 Accepted for publication in The Astrophysical Journal; 28 pages, 9 figures, 5 ...
Wong, Kenneth C. +4 more
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Testing Velocity-field Lensing on IllustrisTNG Galaxies
The 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
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Topological defects in gravitational lensing shear fields [PDF]
Journal of Cosmology and Astroparticle Physics, 2009 17 pages, 4 ...
Vitelli, Vincenzo +2 more
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MULTIPOLE FORMULAE FOR GRAVITATIONAL LENSING SHEAR AND FLEXION [PDF]
The Astrophysical Journal, 2009 ABSTRACT The gravitational lensing equations for convergence, potential, shear, and flexion are simple in polar coordinates and separate under a multipole expansion once the shear and flexion spinors are rotated into a “tangential” basis.
Bernstein, Gary M., Nakajima, Reiko
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Gravitational Shear, Flexion, and Strong Lensing in Abell 1689 [PDF]
The Astrophysical Journal, 2007 We present a gravitational lensing analysis of the galaxy cluster Abell 1689, incorporating measurements of the weak shear, flexion, and strong lensing induced in background galaxies. This is the first time that a shapelet technique has been used to reconstruct the distribution of mass in this cluster, and the first time that a flexion signal has been ...
Leonard, Adrienne +3 more
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The Astronomical Journal, 2023 The Superpressure Balloon-borne Imaging Telescope ( SuperBIT ) is a diffraction-limited, wide-field, 0.5 m, near-infrared to near-ultraviolet observatory designed to exploit the stratosphere’s space-like conditions.
Jacqueline E. McCleary +25 more
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Statistics of Extreme Gravitational Lensing Events. I. The Zero Shear Case [PDF]
The Astrophysical Journal, 1996 For a given source and lens pair, there is a thin on-axis tube-like volume behind the lens in which the radiation flux from the source is greatly increased due to gravitational lensing. Any objects (such as dust grains) which pass through such a thin tube will experience strong bursts of radiation, i.e., Extreme Gravitational Lensing Events (EGLE).
Wang, Yun, Turner, Edwin L.
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Statistics of Extreme Gravitational Lensing Events. II. The Finite Shear Case [PDF]
The Astrophysical Journal, 1997 17 pages including 3 figures, using AAS LATEX macros v4.0.
Wang, Yun, Turner, Edwin L.
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KiDS-1000 catalogue: Weak gravitational lensing shear measurements [PDF]
Astronomy & Astrophysics, 2021 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. Our ‘gold-sample’ of galaxies, with well-calibrated photometric redshift distributions, consists of 21 million galaxies with an effective number density of 6.17 galaxies per square
Giblin, B. +22 more
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Weak gravitational lensing in different cosmologies, using an algorithm for shear in three dimensions [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 25 pages, LaTeX, 30 ...
Andrew J. Barber +3 more
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