Results 81 to 90 of about 11,925 (196)

A New Method for PSF correction using the Ellipticity of Re-smeared Artificial Images in Weak Gravitational Lensing Shear Analysis

The Astrophysical Journal, 2014
We propose a new method for Point Spread Function (PSF) correction in weak gravitational lensing shear analysis using an artificial image with the same ellipticity as the lensed image. This avoids the systematic error associated with the approximation in PSF correction used in previous approaches.
Okura, Yuki, Futamase, Toshifumi
openaire   +3 more sources

Measuring dark energy with the shear triplet statistics [PDF]

, 2007
The shear triplet statistics is a geometric method to measure cosmological parameters with observations in the weak gravitational lensing regime towards massive haloes.
Jain, M. Sereno
core   +2 more sources

Weak Lensing, Shear and the Cosmic Virial Theorem in a Model with a Scale-Dependent Gravitational Coupling [PDF]

General Relativity and Gravitation, 1997
Footnote and references added. Version to in Gen. Relativity and Gravitation Vol. 29 (1997)
openaire   +3 more sources

Garnet–Clinopyroxene Double‐Layered Coronae in a Metagabbronorite From the High‐Grade Metamorphic Gföhl Unit, Moldanubian Zone

Journal of Metamorphic Geology, Volume 44, Issue 4, Page 311-336, May 2026.
ABSTRACT This study investigates garnet–clinopyroxene double‐layered coronae in a metagabbronorite from the high‐grade metamorphic Gföhl Unit (Bohemian Massif). The coronae formed at the interfaces between relic magmatic orthopyroxene, still preserved in the cores of the coronae, and the plagioclase‐rich rock matrix.
Rene Asenbaum, Tereza Nemeškalová, Martin Racek, Vojtěch Janoušek, Julian Portenkirchner, Rainer Abart   +5 more
wiley   +1 more source

A Scalable Gaussian Process Approach to Shear Mapping with MuyGPs

The Astrophysical Journal
Analysis of cosmic shear is an integral part of understanding structure growth across cosmic time, which in turn provides us with information about the nature of dark energy.
Gregory Sallaberry, Benjamin W. Priest, Robert Armstrong, Michael Schneider, Amanda Muyskens, Trevor Steil, Keita Iwabuchi   +6 more
doaj   +1 more source

The mass distribution of a moderate redshift galaxy group and brightest group galaxy from gravitational lensing and kinematics [PDF]

, 2010
The gravitational lens system CLASS B2108+213 has two radio-loud lensed images separated by 4.56 arcsec. The relatively large image separation implies that the lensing is caused by a group of galaxies. In this paper, new optical imaging and spectroscopic
A. More, Abell, Auger, Auger, Barnabè, Beers, Bernardi, Bertin, Blumenthal, Bradač, Bradač, Bradač, Browne, Bullock, C. D. Fassnacht, Chae, Clowe, Cohn, Czoske, D. D. Kocevski, Dalal, Diemand, Dobke, Donato, Ebeling, Eke, Ettori, Faber, Fassnacht, Fassnacht, Fassnacht, Faure, Gao, Gavazzi, Gavazzi, Gavazzi, Gentile, Gnedin, Halkola, Hoekstra, J. P. McKean, Jeltema, Jiang, Keeton, Keeton, Kneib, Kocevski, Kochanek, Koopmans, Koopmans, Koopmans, Krist, Kubo, L. V. E. Koopmans, Lewis, Limousin, Limousin, M. W. Auger, Macciò, MacLeod, Mandelbaum, Marchã, Matthews, McKean, McKean, McKean, Metcalf, Mittal, Momcheva, Moore, Moore, More, More, Morgan, Myers, Natarajan, Navarro, Navarro, O. Czoske, Oguri, Oguri, Oke, Oke, Parker, Peng, Rusin, S. Vegetti, Saha, Salucci, Sand, Sand, Sand, Sand, Sharon, Sheth, Smith, Suyu, Suyu, Swaters, T. Treu, Tonry, Tonry, Tonry, Treu, Treu, Treu, Vegetti, Vegetti, Warren, Williams, Willis, Wilman, Winn, Wucknitz, Yang, Zabludoff   +115 more
core   +5 more sources

Quantifying the Impact of Temporal and Spatial Heterogeneity in Turbulence on Bed‐Load Transport Over Vegetated Beds Under Wave‐Current Conditions

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Laboratory experiments measured velocity and bedload transport in vegetated channels under current‐dominated, combined wave‐current conditions. Waves and vegetation, respectively, introduced temporal and spatial heterogeneity in the velocity, which significantly impacted sediment transport rate.
Bingrun Liu, Wei Li, Heidi M. Nepf
wiley   +1 more source

Testing the Strength of Buried Surface Hoar Weak Layers Under Combined Compression and Shear Loading

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract We experimentally determined the multiaxial strength of weak layers of buried surface hoar using displacement‐controlled tests under combined normal and shear loading on a custom testing machine. We tested 63 samples from three different weak layers, with strengths ranging from 1 to 10 kPa with considerable scattering. While shear strength was
Jakob Schöttner, Marcel Piecuch, Philipp L. Rosendahl, Melin Walet, Valentin Adam, Philipp Weißgraeber, Jürg Schweizer, Alec van Herwijnen   +7 more
wiley   +1 more source

Droplet Microfluidics‐Assisted Fabrication of Magnetite Nanoparticle Hybrid Microgels for Facile Protein Immobilization

ChemBioChem, Volume 27, Issue 7, 14 April 2026.
We present a versatile approach to uniform hybrid microgels containing magnetite nanoparticles (MNPs). Methylcellulose stabilizes MNPs in pre‐hydrogel suspensions, enabling microfluidic processing. Functionalization with biotin yields an experimental platform for enzyme immobilization, shown by immobilizing streptavidin‐horseradish peroxidase (HRP) and
Talika A. Neuendorf, Anika Kaufmann, Russell J. Wilson, Kerstin G. Blank, Julian Thiele   +4 more
wiley   +1 more source

Full-sky lensing shear at second order

, 2010
We compute the reduced cosmic shear up to second order in the gravitational potential without relying on the small angle or thin-lens approximation. This is obtained by solving the Sachs equation which describes the deformation of the infinitesimal cross-
Bernardeau, Francis, Bonvin, Camille, Vernizzi, Filippo   +2 more
core   +1 more source