SELF-CALIBRATION OF GRAVITATIONAL SHEAR-GALAXY INTRINSIC ELLIPTICITY CORRELATION IN WEAK LENSING SURVEYS [PDF]
The Astrophysical Journal, 2010 14 pages, 4 figures. Heavily expanded version. No changes in major results and conclusions.
Pengjie Zhang, Zhang, Pengjie
openaire +3 more sources
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
openaire +13 more sources
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
openaire +5 more sources
Gravitational Lensing from a Spacetime Perspective. [PDF]
Living Rev Relativ, 2004 The theory of gravitational lensing is reviewed from a spacetime perspective, without quasi-Newtonian approximations. More precisely, the review covers all aspects of gravitational lensing where light propagation is described in terms of lightlike ...
Perlick V.
europepmc +6 more sources
Galaxy-Galaxy weak gravitational lensing in cluster environment [PDF]
, 2012 An investigation was carried out into the phenomenon of galaxy-galaxy weak lensing in a sample of 10 X-ray selected galaxy clusters. Using high resolution Hubble Space Telescope imaging data and mathematical techniques described within, the feasibility ...
James, Timothy, John
core +7 more sources
Shear and Ellipticity in Gravitational Lenses [PDF]
The Astrophysical Journal, 1997 Galaxies modeled as singular isothermal ellipsoids with an axis ratio distribution similar to the observed axis ratio distribution of E and S0 galaxies are statistically consistent with both the observed numbers of two-image and four-image lenses and the inferred ellipticities of individual lenses.
Keeton, C. R. +2 more
openaire +2 more sources
Search for lensing signatures in the gravitational-wave observations from the first half of LIGO–Virgo's third observing run [PDF]
, 2021 We search for signatures of gravitational lensing in the gravitational-wave signals from compact binary coalescences detected by Advanced Laser Interferometer Gravitational-wave Observatory (LIGO) and Advanced Virgo during O3a, the first half of their ...
The LIGO Scientific Collaboration +8 more
core +4 more sources
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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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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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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