1k citations · 13.3k across the 300 of their papers we have counts for
15 papers · 1 filter
Gaussianisation for fast and accurate inference from cosmological data
Robert L. Schuhmann, Benjamin Joachimi, Hiranya V. Peiris
We present a method to transform multivariate unimodal non-Gaussian posterior probability densities into approximately Gaussian ones via non-linear mappings, such as Box--Cox trans…
A direct measurement of tomographic lensing power spectra from CFHTLenS
Fabian Köhlinger, Massimo Viola, Wessel Valkenburg +3
We measure the weak gravitational lensing shear power spectra and their cross-power in two photometric redshift bins from the Canada-France-Hawaii Telescope Lensing Survey (CFHTLen…
The first and second data releases of the Kilo-Degree Survey
Jelte T. A. de Jong, Gijs A. Verdoes Kleijn, Danny R. Boxhoorn +46
The Kilo-Degree Survey (KiDS) is an optical wide-field imaging survey carried out with the VLT Survey Telescope and the OmegaCAM camera. KiDS will image 1500 square degrees in four…
Dark matter halo properties of GAMA galaxy groups from 100 square degrees of KiDS weak lensing data
M. Viola, M. Cacciato, M. Brouwer +24
The Kilo-Degree Survey (KiDS) is an optical wide-field survey designed to map the matter distribution in the Universe using weak gravitational lensing. In this paper, we use these…
Enhancing the Cosmic Shear Power Spectrum
Fergus Simpson, Joachim Harnois-Déraps, Catherine Heymans +3
Applying a transformation to a non-Gaussian field can enhance the information content of the resulting power spectrum, by reducing the correlations between Fourier modes. In the co…
CFHTLenS: Weak lensing constraints on the ellipticity of galaxy-scale matter haloes and the galaxy-halo misalignment
Tim Schrabback, Stefan Hilbert, Henk Hoekstra +16
We present weak lensing constraints on the ellipticity of galaxy-scale matter haloes and the galaxy-halo misalignment. Using data from the Canada-France-Hawaii Telescope Lensing Su…
RCSLenS: Testing gravitational physics through the cross-correlation of weak lensing and large-scale structure
Chris Blake, Shahab Joudaki, Catherine Heymans +8
The unknown nature of dark energy motivates continued cosmological tests of large-scale gravitational physics. We present a new consistency check based on the relative amplitude of…
The masses of satellites in GAMA galaxy groups from 100 square degrees of KiDS weak lensing data
Cristóbal Sifón, Marcello Cacciato, Henk Hoekstra +23
We use the first 100 sq. deg. of overlap between the Kilo-Degree Survey (KiDS) and the Galaxy And Mass Assembly (GAMA) survey to determine the galaxy halo mass of ~10,000 spectrosc…
Galaxy alignments: Theory, modelling and simulations
Alina Kiessling, Marcello Cacciato, Benjamin Joachimi +8
The shapes of galaxies are not randomly oriented on the sky. During the galaxy formation and evolution process, environment has a strong influence, as tidal gravitational fields in…
Galaxy alignments: Observations and impact on cosmology
Donnacha Kirk, Michael L. Brown, Henk Hoekstra +10
Galaxy shapes are not randomly oriented, rather they are statistically aligned in a way that can depend on formation environment, history and galaxy type. Studying the alignment of…
Galaxy alignments: An overview
Benjamin Joachimi, Marcello Cacciato, Thomas D. Kitching +8
The alignments between galaxies, their underlying matter structures, and the cosmic web constitute vital ingredients for a comprehensive understanding of gravity, the nature of mat…
Detection of spatial correlations of fundamental plane residuals, and cosmological implications
Benjamin Joachimi, Sukhdeep Singh, Rachel Mandelbaum
The fundamental plane (FP) is a widely used tool to investigate the properties of early-type galaxies, and the tight relation between its parameters has spawned several cosmologica…
Cosmology from HI galaxy surveys with the SKA
Filipe B. Abdalla, Philip Bull, Stefano Camera +8
The Square Kilometer Array (SKA) has the potential to produce galaxy redshift surveys which will be competitive with other state of the art cosmological experiments in the next dec…
Cross correlation surveys with the Square Kilometre Array
Donnacha Kirk, Aurélien Benoit-Lévy, Filipe B. Abdalla +2
By the time that the first phase of the Square Kilometre Array is deployed it will be able to perform state of the art Large Scale Structure (LSS) as well as Weak Gravitational Len…
Weak gravitational lensing with the Square Kilometre Array
M. L. Brown, D. J. Bacon, S. Camera +12
We investigate the capabilities of various stages of the SKA to perform world-leading weak gravitational lensing surveys. We outline a way forward to develop the tools needed for p…